FORM 10-Q

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

       (Mark One)
         [ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

               For the quarterly period ended SEPTEMBER 30, 2005

                                      OR
        [    ]TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934
        For the transition period from  ____________ to ______________

                       Commission file number:  1-13923

                              WAUSAU PAPER CORP.
              (Exact name of registrant as specified in charter)

               WISCONSIN                            39-0690900
         (State of incorporation)       (I.R.S. Employer Identification Number)

                                100 PAPER PLACE
                         MOSINEE, WISCONSIN 54455-9099
                    (Address of principal executive office)

       Registrant's telephone number, including area code: 715-693-4470

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such report), and (2) has been subject to such
filing requirements for the past 90 days.

                              Yes   X      No ____

Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act).
                              Yes   X      No ____

Indicate by check mark whether the registrant is a shell company (as defined in
Rule 12b-2 of the Exchange Act).
                              Yes ____     No __X__

The number of common shares outstanding at October 31, 2005 was 51,291,950.

                              WAUSAU PAPER CORP.

                               AND SUBSIDIARIES

                                     INDEX
                                                                       PAGE NO.
PART I.                      FINANCIAL INFORMATION

      Item 1.   Financial Statements
                Condensed Consolidated Statements of 
                Operations, Three Months and Nine Months Ended
                September 30, 2005 (unaudited) and
                September 30, 2004 (unaudited)                               1

                Condensed Consolidated Balance
                Sheets, September 30, 2005 (unaudited)
                and December 31, 2004 (derived from
                audited financial statements)                                2

                Condensed Consolidated Statements
                of Cash Flows, Nine Months Ended
                September 30, 2005 (unaudited) and
                September 30, 2004 (unaudited)                               3

                Notes to Condensed Consolidated
                Financial Statements (unaudited)                           3-9

      Item 2.   Management's Discussion and 
                Analysis of Financial Condition
                and Results of Operations                                10-18

      Item 3.   Quantitative and Qualitative Disclosures About Market Risk  18

      Item 4.   Controls and Procedures                                     18

PART II.    OTHER INFORMATION

      Item 2.   Unregistered Sales of Equity Securities and Use of Proceeds 19

      Item 6.   Exhibits                                                    19
                                       i

                        PART I.  FINANCIAL INFORMATION



ITEM 1.     FINANCIAL STATEMENTS

Wausau Paper Corp. and Subsidiaries 
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

                                                          Three Months Ended      Nine Months Ended
                                                              September 30,        September 30,
(all dollar amounts in thousands, except per share data)     2005      2004       2005      2004
                                                                             
NET SALES                                                 $285,624  $262,428   $828,656  $778,352 

Cost of products sold                                      277,482   229,983    780,533   691,073 

GROSS PROFIT                                                 8,142    32,445     48,123    87,279 

Selling and administrative expenses                         19,108    17,158     55,011    55,796
Restructuring expense                                          226         0        403         0
OPERATING (LOSS) PROFIT                                    (11,192)   15,287     (7,291)   31,483 

Interest expense                                            (2,718)   (2,608)    (8,055)   (7,685)

Other income, net                                              124       191        361       483 

(LOSS) EARNINGS BEFORE INCOME TAXES                        (13,786)   12,870    (14,985)   24,281 

(Credit) provision for income taxes                         (4,794)    4,762     (5,238)    8,984 

NET (LOSS) EARNINGS                                      ($  8,992)  $ 8,108  ($  9,747)  $15,297 

NET (LOSS) EARNINGS PER SHARE-BASIC                      ($   0.18)  $  0.16  ($   0.19)  $  0.30 

NET (LOSS) EARNINGS PER SHARE-DILUTED                    ($   0.18)  $  0.16  ($   0.19)  $  0.29 

Weighted average shares outstanding-basic                   51,369    51,681    51,548     51,654

Weighted average shares outstanding-diluted                 51,369    51,980    51,548     51,905

Dividends declared per common share                       $      0   $     0   $  0.17    $  0.17



See Notes to Condensed Consolidated Financial Statements.
                                       1



Wausau Paper Corp. and Subsidiaries
CONDENSED CONSOLIDATED BALANCE SHEETS


(all dollar amounts in thousands)                  SEPTEMBER 30, December 31,
                                                       2005         2004
ASSETS                                              (UNAUDITED)
                                                           
Current assets:
   Cash and cash equivalents                         $ 12,285    $ 51,914
   Receivables, net                                   108,278      95,731
   Inventories                                        141,695     126,932
   Deferred income taxes                               10,744       8,592
   Other current assets                                 4,536       4,123
      Total current assets                            277,538     287,292

Property, plant and equipment, net                    510,225     551,160
Other assets                                           46,278      43,782

TOTAL ASSETS                                         $834,041    $882,234

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
   Current maturities of long-term debt              $     60    $    115
   Accounts payable                                    75,344      74,558
   Accrued and other liabilities                       58,299      73,077
      Total current liabilities                       133,703     147,750

Long-term debt                                        161,268     161,833
Deferred income taxes                                  98,344     105,885
Postretirement benefits                                58,599      57,303
Pension                                                25,173      30,996
Other noncurrent liabilities                           23,181      21,375
      Total liabilities                               500,268     525,142
Stockholders' equity                                  333,773     357,092

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY           $834,041    $882,234

See Notes to Condensed Consolidated Financial Statements.
                                       2



Wausau Paper Corp. and Subsidiaries 
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)


                                                            Nine Months Ended
                                                               September 30,
(all dollar amounts in thousands)                            2005        2004
                                                                
Net cash provided by operating activities                $  3,708     $47,102 

Cash flows from investing activities:
   Capital expenditures                                   (26,606)    (16,579)
   Proceeds from property, plant and equipment disposals    1,490          43 
Cash used in investing activities                         (25,116)    (16,536)

Cash flows from financing activities:
   Payments under capital lease obligation                   (76)        (83)
   Dividends paid                                        (13,162)    (13,166)
   Payments for purchase of company stock                 (4,983)          0
   Proceeds from stock option exercise                         0       1,413 
Cash used in financing activities                        (18,221)    (11,836)

Net (decrease) increase in cash and cash equivalents     (39,629)     18,730 
Cash and cash equivalents, beginning of period            51,914      36,305 

Cash and cash equivalents, end of period                $ 12,285     $55,035 

Interest-net of amount capitalized                      $ 10,441     $10,568 
Income taxes paid                                          9,606       7,701 

See Notes to Condensed Consolidated Financial Statements.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

Note 1. The condensed consolidated financial statements include the results of
        Wausau Paper Corp. and our consolidated subsidiaries.  All significant
        intercompany transactions have been eliminated.  The accompanying
        condensed financial statements, in the opinion of management, reflect
        all adjustments, which are normal, and recurring in nature and which
        are necessary for a fair statement of the results for the periods
        presented.  Results for the interim period are not necessarily
        indicative of future results.  In all regards, the financial statements
        have been presented in accordance with accounting principles generally
        accepted in the United States of America.  Refer to notes to the
        financial statements, which appear in the Annual Report on Form 10-K
        for the year ended December 31, 2004, for the Company's accounting
        policies and other disclosures, which are pertinent to these
        statements.
                                       3



Note 2. Basic and diluted (loss) earnings per share are reconciled as follows:

        (all amounts in thousands,                  Three Months          Nine Months
        except per share data)                   Ended September 30,  Ended September 30,
                                                    2005      2004       2005      2004
                                                                   
        Net (loss) earnings                      ($8,992)   $8,108   ($9,747)   $15,297

        Basic weighted average common        
        shares outstanding                        51,369    51,681    51,548     51,654
        Dilutive securities: 
          Stock compensation plans                     0       299         0        251
        Dilutive weighted average common 
        shares outstanding                        51,369    51,980    51,548     51,905

        Net (loss) earnings per share-basic     ($  0.18)  $  0.16  ($  0.19)  $   0.30

        Net (loss) earnings per share-diluted   ($  0.18)  $  0.16  ($  0.19)  $   0.29

        For the three months ended September 30, 2005 and 2004, 1,949,880
        shares and 288,586 shares under stock compensation plans, respectively,
        were excluded from the diluted EPS calculation because the shares were
        antidilutive.  For the nine months ended September 30, 2005 and 2004,
        1,949,880 shares and 395,622 shares, respectively, were excluded from
        the diluted EPS calculation because the options were antidilutive.
       
Note 3. Net loss or earnings include provisions, or credits, for certain stock-
        based compensation plans calculated by using the average price of the
        Company's stock at the close of each calendar quarter as if all grants
        under such plans had been exercised on that day.  In addition, fixed
        compensation expense is recognized for certain stock-based compensation
        plans over the remaining service or vesting period of the grant.  For
        the three months ended September 30, 2005, the provision for stock-
        based compensation plans on a pretax basis was $0.3 million.  For the
        three months ended September 30, 2004, the credit for stock-based
        compensation plans on a pretax basis was $0.2 million. For the nine
        months ended September 30, 2005, the credit for stock-based
        compensation plans on a pretax basis was $2.5 million.  For the nine
        months ended September 30, 2004, the provision for stock-based
        compensation plans on a pretax basis was $2.0 million.

        As permitted under SFAS No. 123, "Accounting for Stock-Based
        Compensation," the Company continues to measure compensation cost for
        stock-option plans using the "intrinsic value based method" prescribed
        under APB No. 25, "Accounting for Stock Issued to Employees."
                                       4
        Pro forma net (loss) earnings and (loss) earnings per share had the
        Company elected to adopt the "fair-value based method" of SFAS No. 123
        are as follows:



      (all dollar amounts in thousands, except per share data)

                                                     Three Months          Nine Months
                                                 Ended September 30,  Ended September 30,
                                                   2005       2004      2005       2004
                                                                      
       Net (loss) earnings, as reported         ($8,992)    $8,108   ($ 9,747)    $15,297
       Add: Total stock-based employee
            compensation expense (credit) 
            under APB No. 25, net of 
            related tax effects                     163       (110)    (1,551)      1,255
       Deduct: Total stock-based 
            compensation (expense) credit 
            determined under fair-value 
            based method for all awards, 
            net of related tax effects             (320)        27      1,109      (1,458)
       Proforma                                 ($9,149)    $8,025   ($10,189)    $15,094

       (Loss) earnings per share - basic:
            As reported                         ($ 0.18)    $ 0.16   ($  0.19)    $  0.30
            Pro forma                           ($ 0.18)    $ 0.16   ($  0.20)    $  0.29
       (Loss) earnings per share - diluted:
            As reported                         ($ 0.18)    $ 0.16   ($  0.19)    $  0.29
            Pro forma                           ($ 0.18)    $ 0.15   ($  0.20)    $  0.29

        In December 2004, the Financial Accounting Standards Board ("FASB")
        issued Statement of Financial Accounting Standards No. 123 (revised
        2004), "Share-Based Payment" ("SFAS 123R"), which was to be effective
        for the Company on July 1, 2005.  On April 14, 2005, the Securities and
        Exchange Commission ("SEC") announced the adoption of a rule that
        defers the effective date of SFAS 123R.  The Company plans to adopt
        SFAS 123R in the first quarter of 2006 and is currently evaluating
        which method of adoption will be utilized.  As a result, the Company is
        unable to disclose the impact that adopting this statement will have on
        its financial position and results of operations when adopted.
       
Note 4. Accounts receivable consisted of the following:


       (all dollar amounts in thousands)        SEPTEMBER 30,December 31,
                                                    2005         2004
                                                       
       Trade                                     $108,664    $ 95,787 
       Other                                        1,806       1,778 
                                                  110,470      97,565 
       Less: allowances for doubtful accounts      (2,192)     (1,834)
                                                 $108,278    $ 95,731 

                                       5

Note 5. The various components of inventories were as follows:


       (all dollar amounts in thousands)         SEPTEMBER 30,December 31,
                                                     2005        2004
                                                       
       Raw materials                             $ 38,935    $ 38,247 
       Work in process and finished goods         107,173      89,992 
       Supplies                                    29,336      28,731 
       Inventories at cost                        175,444     156,970 
       Less:  LIFO reserve                        (33,749)    (30,038)
                                                 $141,695    $126,932 

Note 6. The accumulated depreciation on fixed assets was $748.3 million as of
        September 30, 2005, and $685.9 million as of December 31, 2004.  The
        provision for depreciation, amortization and depletion for the three
        months ended September 30, 2005 and September 30, 2004 was $36.2
        million and $14.9 million, respectively.  The provision for
        depreciation, amortization and depletion for the nine months ended
        September 30, 2005 and September 30, 2004 was $70.2 million and $44.9
        million, respectively.  Quarter-over-quarter and year-over-year
        increases in depreciation expense are primarily the result of
        accelerated depreciation recorded in the three months and nine months
        ended September 30, 2005, of $22.1 million and $25.8 million,
        respectively, in connection with the closure of Printing & Writing's
        sulfite pulp mill located in Brokaw, Wisconsin.  See Note 8 for
        additional pulp mill closure information.

Note 7. The components of net periodic benefit costs recognized in the
        Condensed Consolidated Statements of Operations for the three months
        ended September 30, 2005 and 2004 are as follows:


        (all dollar amounts in thousands)                             Other
                                                                   Post-retirement
                                            Pension Benefits         Benefits
                                           2005       2004       2005     2004
                                                           
        Service cost                    $ 1,813   $  1,730    $   628  $   466 
        Interest cost                     2,396      2,491      1,185    1,183 
        Expected return on plan assets   (2,708)    (2,503)         0        0 
        Amortization of: 
           Prior service cost               549        549       (763)    (899)
           Actuarial loss                   465        419        338      371 
           Transition (asset)                 0        (12)         0        0 
        Settlement                           12         30          0        0
        Net periodic benefit cost       $ 2,527   $  2,704    $ 1,388  $ 1,121

                                       6

        The components of net periodic benefit costs recognized in the
        Condensed Consolidated Statements of Operations for the nine months
        ended September 30, 2005 and 2004 are as follows:


        (all dollar amounts in thousands)                            Other
                                                                 Post-retirement
                                            Pension Benefits        Benefits
                                           2005       2004       2005     2004
                                                           
        Service cost                    $ 5,438    $ 5,170    $ 1,885  $ 1,808 
        Interest cost                     7,188      7,337      3,555    4,229 
        Expected return on plan assets   (8,124)    (7,508)         0        0 
        Amortization of: 
           Prior service cost             1,647      1,524     (2,291)  (1,073)
           Actuarial loss                 1,396      1,258      1,014    1,265 
           Transition (asset)                 0        (38)         0        0
        Settlement                          317         30          0        0
        Net periodic benefit cost       $ 7,862    $ 7,773    $ 4,163  $ 6,229 

        The Company previously disclosed in its consolidated financial
        statements for the year ended December 31, 2004, that although it does
        not have a minimum funding requirement for defined benefit pension
        plans in 2005, it may elect to make contributions of up to $16.0
        million to pension plans.  As of September 30, 2005, the Company has
        made payments of $11.9 million to its pension plans.  The Company
        previously reported that it expected to contribute $4.1 million
        directly to post-retirement plans.  As of September 30, 2005, the
        Company has contributed $3.8 million to its post-retirement plans and
        now expects to contribute, in total, approximately $5.2 million to
        post-retirement plans for 2005.

Note 8. Pulp Mill Closure

        In July 2005, the Company announced plans to permanently close the
        sulfite pulp mill at its Brokaw, Wisconsin, papermaking facility.  The
        pulp mill closure is expected to be substantially completed by the end
        of 2005 and will result in the elimination of approximately 60
        permanent jobs, or 11% of the facility's total workforce.  The related
        long-lived assets will be abandoned. The cost of products sold for the
        three month and nine month periods ended September 30, 2005, as
        reflected in the Condensed Consolidated Statements of Operations
        include $20.6 million and $29.9 million, respectively, in pre-tax
        charges for accelerated depreciation, an adjustment of pulp mill
        inventory to net realizable value, and a third quarter revision to the
        original pulp mill inventory value based upon additional usage of
        inventories.  Pre-tax restructuring expense related to certain assets
        disposed as a direct result of the closure and other associated costs
        were $0.2 million and $0.4 million for the three months and nine months
        ended September 30, 2005, respectively.  Additional pre-tax closure
        charges of approximately $12.1 million are expected to be recognized
        over the next three quarters, with $11.5 million in the fourth quarter
        of 2005, and $0.6 million in the first half of 2006.
                                       7

       The following table sets forth information with respect to pulp mill
       closure charges:


         (all dollar amounts in thousands)                         
                                                                      Expected in
                                         THREE MONTHS    NINE MONTHS           
                                              ENDED         ENDED       Fourth
                                          SEPTEMBER 30,  SEPTEMBER 30, Quarter
                                              2005          2005         2005
                                                              
       Depreciation on equipment to be
          abandoned                        $22,078         $25,758      $7,400
       Inventory write-down                 (1,757)          3,854           0
       Severance and benefit continuation      383             383         600
       Other associated costs                  104             281       3,500
          Total                            $20,808         $30,276     $11,500

Note 9. Interim Segment Information

        The Company has reclassified certain prior-year interim segment
        information to conform to the 2005 presentation.  The reclassification
        is the result of a change in the management of two converting
        facilities from the Printing & Writing segment to the Specialty
        Products segment.  

        FACTORS USED TO IDENTIFY REPORTABLE SEGMENTS
        The Company's operations are classified into three principal reportable
        segments:  Specialty Products, Printing & Writing, and Towel & Tissue,
        each providing different products.  Separate management of each segment
        is required because each business unit is subject to different
        marketing, production, and technology strategies. 

        PRODUCTS FROM WHICH REVENUE IS DERIVED
        Specialty Products produces specialty papers at its manufacturing
        facilities in Rhinelander, Wisconsin; Mosinee, Wisconsin; and Jay,
        Maine.  Specialty Products also includes two converting facilities that
        produce laminated roll wrap and related specialty finishing and
        packaging products. Printing & Writing produces a broad line of premium
        printing and writing grades at manufacturing facilities in Brokaw,
        Wisconsin; Groveton, New Hampshire; and Brainerd, Minnesota.  Printing
        & Writing also includes a converting facility which converts printing
        and writing grades.  Towel & Tissue produces a complete line of towel
        and tissue products that are marketed along with soap and dispensing
        systems for the "away-from-home" market.  Towel & Tissue operates a
        paper mill in Middletown, Ohio, and a converting facility in
        Harrodsburg, Kentucky.
                                       8

        RECONCILIATIONS
        The following are reconciliations to corresponding totals in the
        accompanying consolidated financial statements:


                                                     Three Months         Nine Months
                                                  Ended September 30,   Ended September 30,
        (all dollar amounts in thousands)          2005        2004       2005       2004
                                                                       
        Net sales external customers
           Specialty Products                    $115,461    $114,580   $347,806   $347,245
           Printing & Writing                     100,549      89,361    288,399    264,680
           Towel & Tissue                          69,614      58,487    192,451    166,427
                                                 $285,624    $262,428   $828,656   $778,352
        Operating (loss) profit 
           Specialty Products                    $  4,260    $  6,330   $ 12,029   $16,073
           Printing & Writing                     (23,103)      3,998    (40,772)    5,603
           Towel & Tissue                          10,776       7,855     28,582    21,287
           Corporate & eliminations                (3,125)     (2,896)    (7,130)  (11,480)
           (Loss) earnings before income taxes  ($ 11,192)   $ 15,287   ($ 7,291)  $31,483



                                                     SEPTEMBER 30,December 31,
                                                         2005         2004
                                                              
        Segment assets:                                        
          Specialty Products                           $337,423     $342,724
          Printing & Writing                            271,496      281,378
          Towel & Tissue                                174,852      171,080
          Corporate & Unallocated*                       50,270       87,052
                                                       $834,041     $882,234

       *  Segment assets do not include intersegment accounts receivable, cash,
          deferred tax assets and certain other assets, which are not
          identifiable with segments.

                                       9
ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

OVERVIEW

In the third quarter of 2005, the Company reported a net loss of $9.0 million
or $0.18 per share compared to prior year net earnings of $8.1 million or $0.16
per share.  The net loss for the third quarter of 2005 included an after-tax
charge of $13.6 million, or $0.26 per share related to the previously announced
closure of the Printing & Writing segment's sulfite pulp mill in Brokaw,
Wisconsin and after-tax losses of $1.8 million, or $0.04 per share, related to
the operation of the Printing & Writing segment's mill in Brainerd, Minnesota,
which was acquired in October 2004.  While third quarter market conditions were
strong for the Company's towel and tissue products, demand was weaker for the
Company's printing and writing and specialty products.  Market conditions
remained weakest within the Company's Printing & Writing business segment with
year-to-date uncoated freesheet demand declining approximately 4%.  In response
to weak market conditions, the Printing & Writing segment reduced third quarter
production by approximately 5,000 tons, taking four days of downtime at the
segment's Brainerd mill and nearly one month on a 50,000 ton-per-year paper

machine at the Brokaw paper mill-one of the facility's four machines.  The
Brokaw facility's paper machine remains temporarily idle. Despite challenging
business conditions, the Company increased both shipments and sales compared
with the prior year, with two of the Company's three business segments posting
increases.

For the nine months ended September 30, 2005, the Company reported a net loss
of $9.7 million or $0.19 per share compared to net earnings of $15.3 million or
$0.29 per diluted share in the first nine months of 2004. In addition to
sulfite pulp mill closure charges of $0.38 per diluted share, results for the
first nine months of 2005 included after-tax losses of $7.6 million, or $0.15
per share, for the Brainerd mill.    

Effective with the first quarter of 2005, the Specialty Products business
segment includes the results from two of the Company's converting facilities,
which were previously included in the Printing &Writing business segment.  As a
result, the Company has reclassified certain prior-year interim segment
information to conform to the 2005 presentation.


OPERATIONS REVIEW

Net Sales
                                         Three Months            Nine Months
                                      Ended September 30,    Ended September 30,
(all dollar amounts in thousands)     2005        2004        2005       2004
                                                           
Net sales                            $285,624   $262,428    $828,656   $778,352
Percent increase                        9%         5%          6%         6%

Consolidated net sales of $285.6 million for the three months ended September
30, 2005 improved 9% over consolidated net sales of $262.4 million for the
three months ended September 30, 2004.  Shipments improved 7% quarter-over-
quarter with 228,775 tons shipped during the third quarter of 2005 and 213,293
tons shipped during the third quarter of 2004. 
                                       10
During the same comparative periods, average net selling price improved nearly
1%, or approximately $2 million, with a decline in overall product mix
partially offsetting the benefit of actual product selling price increases.

For the nine months ended September 30, 2005 and 2004, consolidated net sales
were $828.7 million and $778.4 million, respectively, or a 6% improvement year-
over-year. Year-to-date shipments at September 30, 2005 were 672,091 tons which
represented a 3% increase over the 649,858 tons shipped during the same nine-
month period in 2004.  During the first nine months of 2005, average net
selling price improved approximately 3%, or $21 million, with actual selling
price increases of approximately 4% partially offset by a slight decline in
product mix. 

Quarter-over-quarter net sales and shipments in the Specialty Products'
business segment were essentially unchanged for the third quarters of 2005 and
2004. Net sales were $115.5 million and $114.6 million for the three months
ended September 30, 2005 and 2004, respectively. Third quarter shipments were
101,385 tons and 101,547 tons in 2005 and 2004, respectively. 

For the first nine months of 2005, Specialty Products' net sales were similar

at $347.8 million compared to $347.2 million in the first nine months of 2004.
Shipment volume declined 4% to 306,577 tons during the first nine months of
2005 compared to 317,886 tons shipped during the first nine months of 2004.
Approximately one-half of the year-over-year decline in volume was due to
reduced paper mill packaging shipments.  The decline in total volume year-over-
year was offset by a like increase in average net selling price of 3%.  While
the traditional markets in which this segment competes remain price sensitive,
the improvement in average net selling price is due in part to the segment's
focus on new product development and the introduction of new products in the
market place. To date, approximately one-third of the improvement in average
net selling price is due to product mix enhancements.

For the three months ended September 30, 2005, Printing & Writing reported net
sales of $100.5 million, an increase of 13% over reported net sales in the
third quarter of 2004 of $89.4 million.  The current quarter improvement in net
sales was due to a more than 16% increase in volume as 84,194 tons were shipped
during the third quarter of 2005 compared to 72,287 tons during the third
quarter of 2004.  The improvement in shipment tons quarter-over-quarter was due
primarily to increased shipments from the Brainerd mill, acquired in the fourth
quarter of 2004, and was somewhat offset by a decline in average net selling
price of nearly 5%.  The decrease in average net selling price is principally
due to the commodity-oriented product mix produced and shipped from the
Brainerd mill.  Actual product selling prices increased approximately 1%, or
approximately $1 million, as compared with last year as continued year-over-
year declines in the uncoated freesheet paper markets have made it difficult to
increase selling prices.

Year-to-date net sales for Printing & Writing increased 9% to $288.4 million in
2005 from $264.7 million in 2004.  Shipment volume improved 12% year-over-year
with 244,765 tons shipped during the nine months ended September 30, 2005 and
218,380 tons shipped during the nine months ended September 30, 2004.  As in
the quarterly comparison, the increase in volume is due primarily to increased
shipments from the Brainerd mill which is somewhat offset by a
                                       11
decline in average net selling price of  approximately 3% due to the
commodity-oriented product mix produced and shipped from the Brainerd mill.

Towel & Tissue reported net sales of $69.6 million for the three-month period
ended September 30, 2005, an increase of 19% from net sales of $58.5 million
reported in the same three-month period of 2004.  Total shipments increased 9%
to 43,196 tons from 39,459 tons during the same period last year, despite less
than one percent growth in the "away-from-home" towel and tissue market in
which this business segment competes.  Average net selling price increased
nearly 10%, or approximately $6 million, in the third quarter of 2005 over the
third quarter of 2004 due principally to significant pricing gains experienced
in this business segment.

Net sales for the first nine months of 2005 and 2004 were $192.5 million and
$166.4 million, respectively, for Towel & Tissue-an improvement of 16%.
Product selling price increases drove an increase in average net selling price
of more than 9% as compared to 2004.  In addition, shipments of 120,749 tons
during the first three quarters of 2005 increased 7,157 tons or 6% over
shipments of 113,592 tons during the first three quarters of 2004.



Gross Profit
                                          Three Months           Nine Months
                                       Ended September 30,   Ended September 30,
(all dollar amounts in thousands)        2005      2004        2005      2004
                                                            
Gross profit on sales                   $8,142    $32,445     $48,123   $87,279
Gross profit margin                       3%        12%         6%        11%

Gross profit for the three months ended September 30, 2005, was $8.1 million
compared to $32.4 million for the three months ended September 30, 2004.  The
third quarter of 2005 includes $20.6 million in charges related to the planned
closure of Printing & Writing's sulfite pulp mill located in Brokaw, Wisconsin.
The charges, which impacted gross profit by more than 7 percentage points,
consist primarily of accelerated depreciation on assets that will be abandoned
upon closure.  Energy-related prices, impacted by the production and supply
disruptions caused by Hurricane Katrina, increased approximately $5 million in
the third quarter of 2005 compared to the third quarter of 2004, with natural
gas prices and fuel surcharges accounting for $1.7 million and $1.2 million of
the increase, respectively.  Quarter-over-quarter, fiber prices decreased
approximately $1 million with market pulp declining $1.3 million or 2%;
wastepaper declining $1.3 million or 28%; and linerboard declining $0.4 million
or 6%.  Partially offsetting these reductions were increases in pulpwood prices
of $0.9 million or 12% and purchased towel and tissue parent rolls of $0.8
million or 6%. 

Year-to-date, gross profit decreased from $87.3 million, or 11% of consolidated
net sales, to $48.1 million, or 6% of consolidated net sales.  As in the
quarterly comparison, pulp mill closure charges and unfavorable energy costs
negatively impacted the gross profit margin year-over-year.  In addition, on a
year-to-date basis, market pulp costs, pulpwood prices,  linerboard and
purchased towel and tissue parent roll prices negatively impacted the gross
profit margin. These negative factors more than offset average net selling
price increases, volume gains and continuing cost reduction efforts.  Year-
over-year, market pulp prices increased 4%, or $7 million.
                                       12
Specialty Products' cost-reduction efforts were more than offset by higher
current year manufacturing costs, including market pulp, linerboard and energy,
resulting in lower gross margins of 8% in the third quarter and first nine
months of 2005 compared to 10% in the third quarter and first nine months of
2004.

In the third quarter of 2005, Printing & Writing's gross profit as a percent of
net sales was a negative 17% compared to gross profit of 10% of net sales for
the third quarter of 2004.  Gross profit margin was unfavorably impacted by a
$20.6 million pre-tax charge to cost of products sold, or a 20 percentage-point
reduction in gross profit, as a result of the planned closure of the sulfite
pulp mill located in Brokaw, Wisconsin. The pulp mill closure charge included
accelerated depreciation on pulp mill related assets that will be abandoned as
a result of the closure.    In addition to the unfavorable impacts of energy
described in the consolidated comparison, the Printing & Writing business
segment absorbed operational losses incurred at the Brainerd mill which was
acquired in October 2004.  

Year-to-date, Printing & Writing's gross profit margin was a negative 8% in
2005 compared to 8% for the same nine month period of 2004.  The business
segment recorded a pre-tax pulp mill closure charge of $29.9 million to cost of
goods sold, a 10 percentage-point reduction in gross profit.  As in the
quarter-over-quarter comparison, operational losses at the segment's Brainerd
mill and unfavorable impacts of energy prices drove the current-year gross
profit margin lower.  In addition, year-over-year unfavorable market pulp
prices were also a factor in deterioration of the gross profit margin for the
first nine months of 2005.  

The gross profit margin for Towel & Tissue was 22% in the third quarter of 2005
compared to 20% in the third quarter of 2004.  Increased average selling price,
improved operations and a decline in wastepaper prices offset increases in
purchased towel and tissue parent roll and energy prices described in the
consolidated comparison.

Towel & Tissue gross profit margin improved to 22% during the first nine months
of 2005 compared to 20% reported during the first nine months of 2004.  The
year-over-year comparison was impacted by similar factors as the quarter-over-
quarter comparison.

Consolidated order backlogs were similar year-over-year with approximately
46,400 tons at September 30, 2005, and approximately 46,300 tons at September
30, 2004.  Backlog tons at September 30, 2005 represent $58.0 million in sales
compared to $57.3 million in sales at September 30, 2004. Improvements in
customer backlog were evident in Printing & Writing and Towel & Tissue, while
Specialty Products' customer backlogs declined.  Specialty Products' backlog
tons declined from 33,900 tons as of September 30, 2004, to 31,800 tons at
September 30, 2005.  Printing & Writing backlog tons improved to 9,600 tons at
the end of the third quarter of 2005 compared to 7,500 tons at the end of the
third quarter of 2004.  Towel & Tissue experienced slightly improved backlogs
with 5,000 tons and 4,900 tons reported at the end of the third quarter of 2005
and 2004, respectively.  The change in customer order backlogs does not
necessarily indicate business conditions as a large portion of orders are
shipped directly from inventory upon receipt and do not impact backlog numbers.
                                       13


Selling and Administrative Expenses
                                           Three Months          Nine Months
                                         Ended September 30, Ended September 30,
(all dollar amounts in thousands)          2005      2004      2005      2004
                                                            
Selling and administrative expense        $19,108   $17,158   $55,011   $55,796
Percent increase (decrease)                  11%      4%         (1%)     11%
As a percent of net sales                     7%      7%          7%       7%

Selling and administrative expenses in the third quarter of 2005 were $19.1
million compared to $17.2 million in the same period of 2004.  Stock-based
incentive compensation programs resulted in a provision of $0.3 million for the
three months ended September 30, 2005 compared to a credit of $0.2 million for
the three months ended September 30, 2004.   After adjusting for stock-based
incentive compensation programs, the balance of the increase is due to Brainerd
mill expenses, as well as, advertising and promotional expenses associated with
new product introductions.

Selling and administrative expenses for the nine months ended September 30,
2005 were $55.0 million compared to $55.8 million in the same period of 2004.
Stock-based incentive compensation programs resulted in a credit of $2.5
million for the nine months ended September 30, 2005 compared to a provision of
$2.0 million for the nine months ended September 30, 2004.  After adjusting for
incentive compensation programs, the balance of the year-over-year change is
due to Brainerd mill expenses, as well as, increased advertising and
promotional expenses, wage and benefit costs, legal, audit and consulting
expenses.

Restructuring Charge

The Company recorded a pre-tax $0.2 million closure charge in the third quarter
of 2005 for employee severance benefits and other associated closure costs
directly related to the announced closing of the sulfite pulp mill located at
Printing & Writing's Brokaw papermaking mill.  For the first nine months of
2005, the Company has recorded pre-tax restructuring charges of $0.4 million.
Additional restructuring charges related to the pulp mill closure are expected
to be recorded in the fourth quarter of 2005 as a result of employee severance
costs and other associated costs.


Other Income and Expense

                                           Three Months          Nine Months
                                         Ended September 30, Ended September 30,
(all dollar amounts in thousands)          2005      2004      2005      2004
                                                           
Interest expense                         $2,718    $2,608    $8,055    $7,685
Other income                                124       191       361       483

Interest expense was slightly higher between comparable quarterly periods of
2005 and 2004 at $2.7 million and $2.6 million, respectively, as well as
comparable year-to-date periods of 2005 and 2004 at $8.1 million and $7.7
million, respectively.  The increase was due to slightly higher interest rates
in 2005 compared to 2004.  Long-term debt was $161.3 million and $161.5 million
                                       14
at September 30, 2005 and 2004, respectively. Long-term debt at December 31,
2004, was $161.8 million.  Interest expense in 2005 is expected to be
comparable to 2004 levels for the remainder of the year.  Other income,
consisting principally of interest income, in the third quarter of 2005 is
similar to the same period last year.  Year-to-date other income is slightly
lower in 2005 compared to 2004 due to reduced interest income as a result of
lower cash and cash equivalent balances in the current period.


Income Taxes
                                            Three Months         Nine Months
                                         Ended September 30, Ended September 30,
(all dollar amounts in thousands)          2005      2004      2005      2004
                                                            
(Credit) provision for income taxes      ($4,794)   $4,762   ($5,238)   $8,984
Effective tax rate                           35%       37%       35%       37%

The effective tax rates for the periods presented are indicative of the
Company's normalized tax rate.  The change in the effective tax rate for 2005
is due to minor adjustments to the Company's deferred income taxes. The
effective rate for 2005 is expected to remain at 35%.  

On October 22, 2004, the American Jobs Creation Act of 2004 (the "Act") was
signed into law.  The Act contains $137 billion in tax cuts over a ten year
period beginning in 2005, which are mainly for U.S. manufacturing businesses
and multinational companies.  The Company has not yet completed its assessment
of how the Act might impact its future results of operations or cash flows. 


LIQUIDITY AND CAPITAL RESOURCES 

Cash Flows and Capital Expenditures
                                                Nine Months Ended September 30,
(all dollar amounts in thousands)                      2005        2004
                                                           
Cash provided by operating activities                $ 3,708     $47,102
Capital expenditures                                  26,606      16,579

For the nine months ended September 30, 2005, cash provided by operating
activities was $3.7 million compared to cash provided by operating activities
of $47.1 million for same period in 2004.  Inventory increased approximately
$15 million during the first nine months of 2005 compared to flat year-over-
year inventories during the first nine months of 2004. The increase in
inventory levels are primarily attributable to the Printing & Writing business
segment where weak demand, as well as, an inventory build at the Brainerd mill
which was acquired in October 2004, have driven inventories to higher levels.
The remaining use of cash is related to year-over year decreases in accounts
payable, accrued and other liabilities and income taxes.  On a combined basis,
these items decreased approximately $20 million during the first three quarters
of 2005 compared to an increase of nearly $7 million during the first three
quarters of 2004.

The Company has established an average internal rate of return target of 17% on
all capital projects approved in 2005.  This objective was achieved on projects
approved during the first nine months of the year.  Capital spending for the
first nine months of 2005 was $26.6 million
                                       15
compared to $16.6 million during the first nine months of 2004.  Total capital
spending for the full-year of 2005 is expected to be between $30 million and
$35 million.

For 2005, capital expenditures for projects with total spending expected to
exceed $1.0 million occurred in all three business segments. Specialty Products
spent $2.1 million on paper mill related equipment at the Rhinelander,
Wisconsin, Mosinee, Wisconsin and Jay, Maine mills. Printing & Writing spent
$1.1 million on a palletizer project at the Groveton, New Hampshire facility
and $0.2 million as part of a capital project to expand premium papers
production capabilities at the Brokaw, Wisconsin paper mill.  Towel & Tissue
spent $4.5 million on various converting lines.  

The balance of spending for the first nine months of 2005 was related to
projects that individually are expected to cost less than $1.0 million.  These
expenditures included approximately $13.2 million for essential non or low-
return projects, and approximately $5.5 million on projects expected to provide
a return on investment that exceeds the Company's cost of capital.

For the first nine months of 2004, capital expenditures for projects with total
spending expected to exceed $1.0 million were $1.2 million in Printing &

Writing as part of a capital project to expand premium papers production
capabilities at the Brokaw mill and $1.3 million for a digester replacement at
the Brokaw mill.  In Towel & Tissue, project spending included $0.2 million on
a screw press project, $0.3 million on production equipment, and $3.2 million
for various converting lines.  

The balance of spending during the first nine months of 2004 was related to
projects that individually are expected to cost less than $1.0 million.  These
expenditures included approximately $5.1 million for essential non or low-
return projects, and approximately $5.3 million on projects expected to provide
a return on investment that exceeds the Company's cost of capital.

During the second quarter, the Company announced its intent to sell
approximately 12,000 acres of timberlands, or 10% of the Company timberland
holdings.  During the third quarter of 2005, the Company sold approximately 670
acres of timberlands for $1.2 million, generating an after-tax gain of $0.7
million. Year-to-date through September 30, 2005, the Company has sold
approximately 750 acres for $1.4 million, recording an after-tax gain of
approximately $0.9 million.

On October 24, 2005, the Company announced that due to the planned fourth
quarter closure of the sulfite pulp mill in Brokaw, Wisconsin, lands that
supported the supply of pulpwood to that pulp mill are no longer strategic to
the operations of the Company.  As a result, the timberland divesture program
will be expanded from 12,000 acres to 42,000 acres.  Under this expanded
program, the Company expects to generate proceeds of $46 million and an after-
tax gain of approximately $29 million or $0.57 per share over the next three to
four years. 
                                       16


Debt and Equity
                                                SEPTEMBER 30,   December 31,
(all dollar amounts in thousands)                   2005           2004
                                                        
Short-term debt                                $        60    $       115
Long-term debt                                     161,268        161,833
Total debt                                         161,328        161,948
Stockholders' equity                               333,773        357,092
Total capitalization                               495,101        519,040
Long-term debt/capitalization ratio                    33%            31%

As of September 30, 2005, there was no significant change in total debt as
compared to December 31, 2004. 

On September 30, 2005, the Company had approximately $100 million available
borrowing capacity under a credit facility that expires on August 31, 2008.
The Company's cash position and borrowing capacity is expected to provide
sufficient liquidity to support operations, meet capital spending requirements,
fund dividend payments to shareholders, and continue to repurchase shares of
the Company's common stock.

Early in the second quarter of 2005, the Company announced its intent to
reactivate its common stock buy-back program.  As a result, during the three
months and nine months ended September 30, 2005, a total of 180,000 shares and
404,000 shares, respectively, were repurchased in the open market under

authorizations approved by the Board of Directors in 1998 and 2000.  At
September 30, 2005, there are 2.2 million shares remaining under the
authorization approved in 2000 and no shares remaining under the 1998
authorization. Repurchases may be made from time to time in the open market or
through privately negotiated transactions.

Dividends

On June 13, 2005, the Board of Directors declared a quarterly cash dividend of
$0.085 per common share.  The dividend was paid on August 15, 2005, to
shareholders of record on August 1, 2005. At a meeting held on October 21,
2005, the Board of Director's declared a cash dividend in the amount of $0.085
per share on its common stock.  The dividend is payable on November 15, 2005,
to shareholders of record on November 1, 2005. 
                                       17
INFORMATION CONCERNING FORWARD LOOKING STATEMENTS

This report contains certain of management's expectations and other forward-
looking information regarding the Company pursuant to the safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995. While the
Company believes that these forward-looking statements are based on reasonable
assumptions, such statements are not guarantees of future performance, and all
such statements involve risk and uncertainties that could cause actual results
to differ materially from those contemplated in this report. The assumptions,
risks, and uncertainties relating to the forward-looking statements in this
report include general economic and business conditions, changes in the prices
of raw materials or energy, competitive pricing in the markets served by the
Company as a result of economic conditions, overcapacity in the industry and
the demand for paper products, manufacturing problems at Company facilities and
various other risks and assumptions. These and other assumptions, risks, and
uncertainties are described under the caption "Cautionary Statement Regarding
Forward-Looking Information" in Item 1 of the Company's Annual Report on Form
10-K for the year ended December 31, 2004, and from time to time, in the
Company's other filings with the Securities and Exchange Commission. The
Company assumes no obligation to update or supplement forward-looking
statements that become untrue because of subsequent events.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

There has been no material change in the information provided in response to
Item 7A of the Company's Form 10-K for the year ended December 31, 2004.

ITEM 4.  CONTROLS AND PROCEDURES

As of the end of the period covered by this report, management, under the
supervision, and with the participation, of the Company's President and Chief
Executive Officer and the Chief Financial Officer, evaluated the effectiveness
of the design and operation of the Company's disclosure controls and procedures
pursuant to Rule 13a-15 under the Securities Exchange Act of 1934.  Based upon
such evaluation, the President and Chief Executive Officer and the Chief
Financial Officer concluded that the Company's disclosure controls and
procedures were effective in all material respects as of the end of the period
covered by this report.  There were no changes in the Company's internal
control over financial reporting during the fiscal quarter covered by this
report that materially affected, or are reasonably likely to materially affect,
the Company's internal control over financial reporting.
                                       18

                          PART II.  OTHER INFORMATION



ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Purchases of Equity Securities - Quarter ending September 30, 2005

                                                                                 Maximum number
                                                        Total number            (or approximate
                                                        of shares (or           dollar value) of
                       Total number                    units) purchased         shares (or units)
                         of shares    Average price   as part of publicly        that may yet be
                        (or units)   paid per share    announced plans         purchased under the
                         purchased      (or unit)        or programs            plans or programs
Period                      (a)            (b)             (c)(1)                     (d)(1)    
                                                                        
July                      10,000       $12.63             10,000                
August                   170,000       $12.43            170,000                
September                      0            0                  0                
Quarterly Totals         180,000       $12.44            180,000                    2,234,674

(1)  Includes shares purchased under a program announced on April 20, 2000,
pursuant to which the Board of Directors authorized the repurchase of up to
2,571,000 shares in open market or privately negotiated transactions (the "2000
Plan").  No price or expiration date was specified for the program's purchases.

ITEM 6.  EXHIBITS

Exhibits required by Item 601 of Regulation S-K

31.1  Certification of CEO pursuant to Section 302 of Sarbanes-Oxley Act of
      2002
31.2  Certification of CFO pursuant to Section 302 of Sarbanes-Oxley Act of
      2002
32.1  Certification of CEO and CFO pursuant to Section 906 of Sarbanes-Oxley
      Act of 2002
                                       19

                                  SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                    WAUSAU PAPER CORP.



November 9, 2005                    SCOTT P. DOESCHER              
                                    Scott P. Doescher
                                    Senior Vice President-Finance,
                                    Secretary and Treasurer

                                    (On behalf of the Registrant and as
                                    Principal Financial Officer)
                                       20

                                 EXHIBIT INDEX
                                      TO
                                   FORM 10-Q
                                      OF
                              WAUSAU PAPER CORP.
               FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2005
                 Pursuant to Section 102(d) of Regulation S-T
                        (17 C.F.R. Section 232.102(d))



The following exhibits are filed as part of this report:

31.1   Certification of CEO pursuant to Section 302 of Sarbanes-Oxley Act of
       2002
31.2   Certification of CFO pursuant to Section 302 of Sarbanes-Oxley Act of
       2002
32.1   Certification of CEO and CFO pursuant to Section 906 of Sarbanes-Oxley
       Act of 2002
                                       21