SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 11-K



[X]  ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT
OF 1934

                   For the fiscal year ended December 31, 2003

                                       OR

[ ]  TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE
ACT OF 1934




                         COMMISSION FILE NUMBER 1-14337



                PENTON MEDIA, INC. 401(k) RETIREMENT SAVINGS PLAN
                -------------------------------------------------
                            (Full title of the Plan)



                               PENTON MEDIA, INC.
                               ------------------
          (Name of Issuer of the Securities Held Pursuant to the Plan)




                  1300 East Ninth Street, Cleveland, Ohio 44114
                  ---------------------------------------------
                (Address of Issuer's Principal Executive Office)




                               PENTON MEDIA, INC.
                               INDEX TO FORM 11-K







                                                                                          Page(s)

                                                                                       
(a)   Financial Statements - financial statements required to be filed are listed in the   3-14
      Index attached hereto, which is incorporated herein by reference.

(b)   Signatures                                                                             15

(c)   Exhibit:

      Number  Description
      ------  -----------

      23      Consent of Independent Registered Public Accounting Firm                       16









                                       2



PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN


FINANCIAL STATEMENTS
AND SUPPLEMENTAL SCHEDULE

DECEMBER 31, 2003 AND 2002






                                       3

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

INDEX
--------------------------------------------------------------------------------


                                                                     Page(s)

Report of Independent Registered Public Accounting Firm                    5

Statements of Net Assets Available for Benefits                            6

Statement of Changes in Net Assets Available for Benefits                  7

Notes to Financial Statements                                           8-13

Supplemental Schedule required by ERISA: *

    Form 5500, Schedule H, Part IV, Item 4i:
      Schedule of Assets (Held At End Of Year)                            14




















* All other schedules required by 29 CFR 2520.103-10 of the Department of
Labor's Rules and Regulations for Reporting and Disclosure under ERISA (Employee
Retirement Income Security Act of 1974) have been omitted because the conditions
under which they are required are not present.



                                       4

             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



To the Participants and Administrator of the
Penton Media, Inc. 401(k) Retirement Savings Plan

In our opinion, the accompanying statements of net assets available for benefits
and the related statement of changes in net assets available for benefits
present fairly, in all material respects, the net assets available for benefits
of the Penton Media, Inc. 401(k) Retirement Savings Plan (the "Plan") at
December 31, 2003 and 2002, and the changes in net assets available for benefits
for the year ended December 31, 2003 in conformity with accounting principles
generally accepted in the United States of America. These financial statements
are the responsibility of the Plan's management. Our responsibility is to
express an opinion on these financial statements based on our audits. We
conducted our audits of these statements in accordance with the standards of the
Public Company Accounting Oversight Board (United States) and auditing standards
generally accepted in the United States of America. Those standards require that
we plan and perform the audit to obtain reasonable assurance about whether the
financial statements are free of material misstatement. An audit includes
examining, on a test basis, evidence supporting the amounts and disclosures in
the financial statements, assessing the accounting principles used and
significant estimates made by management, and evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.

Our audits were conducted for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule, Schedule H,
Part IV, Item 4i, Schedule of Assets (Held At End of Year), is presented for the
purpose of additional analysis and is not a required part of the basic financial
statements but is supplementary information required by the Department of
Labor's Rules and Regulations for Reporting and Disclosure under the Employee
Retirement Income Security Act of 1974. This supplemental schedule is the
responsibility of the Plan's management. The supplemental schedule has been
subjected to the auditing procedures applied in the audits of the basic
financial statements and, in our opinion, is fairly stated in all material
respects in relation to the basic financial statements taken as a whole.



/s/ PricewaterhouseCoopers LLP
------------------------------


Cleveland, Ohio
June 16, 2004






                                       5

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
--------------------------------------------------------------------------------



                                                            DECEMBER 31,
                                                         2003           2002

                                                               
Investments, at fair value (See Note 6):
    Registered investment companies                  $46,571,603     $40,913,741
    Common/collective trust                            1,581,940       1,961,414
    Common stock                                       1,723,026       1,087,966
                                                     -----------     -----------
                                                      49,876,569      43,963,121

Participant loans                                      1,091,128       1,232,757
                                                     -----------     -----------

Net assets available for benefits                    $50,967,697     $45,195,878
                                                     ===========     ===========











   The accompanying notes are an integral part of these financial statements.



                                       6



PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
--------------------------------------------------------------------------------





                                                                FOR THE YEAR ENDED
                                                                DECEMBER 31, 2003


                                                                
Additions to net assets attributed to:
   Investment income:
     Interest and dividends                                        $    618,924
     Net appreciation in fair value of investments (See Note 6)       7,880,850
                                                                   ------------
         Total investment income                                      8,499,774

   Contributions:
     Participants                                                     3,416,621
     Employer                                                           599,268
                                                                   ------------
         Total contributions                                          4,015,889
              Total additions                                        12,515,663
                                                                   ------------

Deductions from net assets attributed to:
   Withdrawals and distributions                                     (6,736,672)
   Administrative expenses                                               (7,172)
                                                                   ------------

              Total deductions                                       (6,743,844)
                                                                   ------------

              Net increase                                            5,771,819

Net assets available for benefits:
     Beginning of year                                               45,195,878
                                                                   ------------
     End of year                                                   $ 50,967,697
                                                                   ============






   The accompanying notes are an integral part of these financial statements.


                                       7

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS
--------------------------------------------------------------------------------

  1.  PLAN DESCRIPTION

      The following description of the Penton Media, Inc. 401(k) Retirement
      Savings Plan (the "Plan") provides only general information. Participants
      should refer to the Plan document for a more complete description of the
      Plan's provisions.

      GENERAL
      The Plan is a defined contribution plan established to provide benefits to
      qualified domestic employees of the Plan administrator, Penton Media, Inc.
      ("Penton" or the "Company"). The Plan allows participants to make
      before-tax contributions in accordance with the provisions of Section
      401(k) of the Internal Revenue Code. The Plan is subject to the provisions
      of the Employee Retirement Income Security Act of 1974 (ERISA). Employees
      of the Company become eligible to participate in the plan on the first day
      of the month that is at least 30 days after the date on which the employee
      begins employment with the Company.

      CONTRIBUTIONS
      Participants are able to contribute up to 25% of pre-tax annual
      compensation up to a maximum of $12,000 and $11,000 for 2003 and 2002,
      respectively. Unless waived, 3% of an eligible employee's compensation
      will automatically be deducted and contributed to the Plan. The matching
      percentage contributed by the Company is determined by the Board of
      Directors of the Company. No matching contributions were made in 2003 or
      2002.

      Effective October 1, 2002, the Plan was amended to allow for catch-up
      contributions for participants age 50 or older. Participants that meet
      certain criteria are permitted to make additional contributions up to
      $2,000 and $1,000 for 2003 and 2002, respectively. Catch-up contributions
      are limited by federal tax legislation.

      The Plan also permits rollover contributions from other qualified
      retirement plans. Rollover contributions are included in participant
      contributions and amounted to $85,827 and $110,758 at December 31, 2003
      and 2002, respectively.

      PARTICIPANT ACCOUNTS
      Fidelity Investments Institutional Operations Company, Inc., the trustee
      of the Plan ("Fidelity" or the "Trustee"), maintains an individual account
      for each participant. This account is credited with participant
      contributions, employer matching contributions and Plan earnings.
      Employees elect to allocate their contributions and any employer
      contributions to various investment options as specified in the Plan.
      There were 1,647 and 2,072 participants in the Plan at December 31, 2003
      and 2002, respectively.

      VESTING
      Participants are immediately vested in both employee and employer matching
      contributions, plus actual earnings thereon.

      INVESTMENT OPTIONS
      Upon enrollment in the Plan, a participant may direct employee and
      matching employer contributions in one quarter percent increments to any
      of the investment options. Two of the investment options are no longer
      available for future investment purposes, as noted in the descriptions
      which follow.

      Northern Trust Company ("Northern Trust") is the trustee for the
      AptarGroup Inc. Stock Fund and the Penton Media, Inc. Stock Fund. Northern
      Trust reports all activity of these funds to Fidelity. Fidelity manages
      the following remaining funds: Retirement Government Money Market
      Portfolio, Managed


                                       8

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS
--------------------------------------------------------------------------------


      Income Portfolio, Growth & Income Portfolio, Aggressive Growth Fund,
      Magellan Fund, Spartan 500 Index Fund, Diversified International Fund,
      Fidelity Mid-Cap Stock Fund, PIMCO Total Return Fund II, Neuberger Berman
      Genesis, Morgan Stanley Value Added Equity, and the Fidelity Freedom
      Funds.

      Fidelity Retirement Government Money Market Portfolio is a money market
      mutual fund that invests in obligations, issued or guaranteed as to
      principal and interest by the U.S. Government.

      Fidelity Managed Income Portfolio is a stable value fund (common or
      collective trust). It invests primarily in high-quality, short and long
      term insurance company investment contracts (GICs), bank investment
      contracts (BICs), short term money market instruments and "synthetic" GICs
      (debt obligations issued by one institution and insured by another as to
      the payment of principal at maturity).

      Fidelity Growth & Income Portfolio is a growth and income mutual fund,
      which seeks long-term capital growth, current income, and growth of income
      consistent with reasonable investment risk. It invests primarily in U.S.
      and foreign stocks, focusing on those that pay dividends and show
      potential earnings growth. It may also invest in bonds.

      Fidelity Aggressive Growth Fund is a growth mutual fund and invests
      primarily in stocks of small and medium size developing companies that
      have the potential to grow rapidly. Such stocks may be subject to abrupt
      or erratic price changes.

      Fidelity Magellan Fund is a growth mutual fund and seeks long-term capital
      appreciation by investing in the stocks of both well known and lesser
      known companies with potentially above-average growth potential and a
      correspondingly higher level of risk. Securities held by the fund may
      include both foreign and domestic companies.

      Spartan 500 Index Fund is a growth mutual fund and invests primarily in
      the stocks that are included in the Standard & Poor's Composite Index of
      500 stocks ("S&P 500") and other securities that are based on the value of
      the index.

      Fidelity Diversified International Fund is a growth mutual fund that
      invests primarily in stocks of companies located outside of the U.S. that
      are included in the Morgan & Stanley EAFE Index (Europe, Australia, Far
      East Index). It seeks stocks of larger companies that are considered
      undervalued in their countries.

      Fidelity Mid-Cap Stock Fund is a long-term growth mutual fund that invests
      primarily in domestic and foreign stocks of companies with medium market
      capitalization.

      PIMCO Total Return Fund II is a growth mutual fund that seeks total fund
      return with an average portfolio duration between three and six years. The
      fund invests primarily in investment grade fixed income securities, which
      may include U.S. government obligations, mortgage and asset backed
      securities, variable and floating debt securities and convertible
      securities.

      Neuberger Berman Genesis Trust is a growth mutual fund that seeks long
      term capital appreciation. The fund primarily invests in common stocks of
      small companies.

      Morgan Stanley Value Added Equity Fund is a growth mutual fund that seeks
      capital appreciation and current income. The fund primarily invests in
      common stocks listed on the S&P 500.



                                       9

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS
--------------------------------------------------------------------------------


     Fidelity Freedom Funds are growth and income mutual funds that provide
     investing opportunities for both short and long term goals by allowing
     investors to choose from the following fund options based on the
     participants' targeted retirement date: Fidelity Freedom Income Fund,
     Fidelity Freedom 2000 Fund, Fidelity Freedom 2010 Fund, Fidelity Freedom
     2020 Fund, Fidelity Freedom 2030 Fund and Fidelity Freedom 2040 Fund. The
     funds invest in a combination of Fidelity equity, fixed income and money
     market funds which are allocated differently based on the retirement goal.

     AptarGroup, Inc. Stock Fund is a fund which invested exclusively in shares
     of AptarGroup, Inc. Effective July 1, 2003, the AptarGroup, Inc. Stock Fund
     was no longer available as an investment option. Participants were given
     the option to transfer their account balance to other funds within the Plan
     or have the funds transferred automatically to the Fidelity Retirement
     Government Money Market Portfolio.

     Penton Media, Inc. Stock Fund invests exclusively in shares of Penton
     Media, Inc. stock. Shares in the Penton Media, Inc. Stock Fund are acquired
     on the open market at fair market value on the date purchased. On June 17,
     2003, the Company was notified by the New York Stock Exchange (NYSE) that
     the Company's common stock did not meet the NYSE's listing criteria and as
     such, the common stock was delisted. The Plan was amended, effective June
     13, 2003, to remove the Penton Media, Inc. Stock Fund ("Stock Fund") as an
     investment option. Participants will be able to retain their holdings in
     the Stock Fund or liquidate their holdings, but participants will not be
     able to allocate future contributions or transfer existing assets to the
     Stock Fund.

     PARTICIPANT LOANS
     Participants may borrow from their fund accounts a minimum of $1,000, up
     to, but not to exceed the lesser of $50,000 or 50% of the participant's
     account balance. Participant loans are reflected as a transfer from the
     respective investment funds to the Loan Fund. Loan repayments are treated
     as a transfer to the investment funds from the Loan Fund. Loan terms may
     not exceed five years unless for purchase of a principal residence, which
     allows for repayment over a 10 year period. The loans are secured by the
     balance in the participant's vested account and carry an interest rate
     equal to the prime rate plus one percent on the date of the loan. Interest
     rates range from 5.00% to 11.50%. Principal and interest are paid ratably
     through payroll deductions.

     PAYMENT OF BENEFITS AND WITHDRAWALS
     A participant may withdraw their account balance upon termination of
     employment or upon reaching age 59 1/2 by calling Fidelity directly.

     Hardship withdrawals are available if requirements are met as outlined in
     the Plan document.

     Upon termination of employment or death, the accumulated benefits will be
     paid to the participant or beneficiary based on their payment election.
     Participants may elect to receive either a lump sum payment, a series of
     installment payments over a period of time as determined by the Plan
     document, or a combination of the two.

  2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     BASIS OF ACCOUNTING
     The financial statements of the Plan have been prepared on the accrual
     basis of accounting in accordance with accounting principles generally
     accepted in the United States of America ("GAAP").

                                       10

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS
--------------------------------------------------------------------------------


     USE OF ESTIMATES
     The preparation of the Plan's financial statements in conformity with
     generally accepted accounting principles requires the plan administrator to
     make significant estimates and assumptions that affect the reported amounts
     of assets, liabilities, and changes therein, and disclosures of contingent
     assets and liabilities. Actual results could differ from those estimates.

     RISKS AND UNCERTAINTIES
     The Plan provides for various investment options in any combination of
     stocks and mutual funds. Investment securities are exposed to various
     risks, such as interest rate, market and credit risk. Due to the level of
     risk associated with certain investments and the level of uncertainty
     related to changes in the value of investments, it is at least reasonably
     possible that changes in risks in the near term would materially affect
     participants' account balances and the amounts reported in the statements
     of net assets available for benefits and the statement of changes in net
     assets available for benefits.

     INVESTMENT VALUATION AND INCOME RECOGNITION
     Common stock investments in the AptarGroup, Inc. Stock Fund and Penton
     Media, Inc. Stock Fund are valued at quoted market prices at year-end.
     Registered investment company investments include the Fidelity Growth and
     Income Portfolio, Fidelity Aggressive Growth Fund, Fidelity Magellan Fund,
     Spartan 500 Index Fund, Fidelity Diversified International Fund, Fidelity
     Mid-Cap Stock Fund, PIMCO Total Return Fund II, Neuberger Berman Genesis
     Trust, Morgan Stanley Value Added Equity Fund, and Fidelity Freedom Funds
     and are valued at quoted market prices which represent the net asset value
     of shares held by the Plan at year-end. Money market mutual funds include
     investments in the Fidelity Retirement Government Money Market Portfolio
     and are reflected in the statements of net assets available for benefits as
     a registered investment companies investment and are stated at fair value
     as determined by the trustee. Common/collective trust investments include
     the Fidelity Managed Income Portfolio and are stated at fair value as
     determined by the trustee.

     Purchases and sales of securities, including related gains and losses, are
     recorded as of the trade date. Interest income is recorded when earned.
     Dividend income is recorded on the ex-dividend date.

     The Plan presents in the statement of changes in net assets available for
     benefits the net appreciation or depreciation in the fair value of its
     investments, which consists of the realized gains or losses and the
     unrealized appreciation or depreciation on those investments.

     PAYMENT OF BENEFITS
     Benefits are recorded when paid by the Plan.

     ADMINISTRATIVE EXPENSES
     The costs to administer the Plan are paid by the Plan with the exception of
     audit and legal fees, which are paid by the Company.

  3. UNREGISTERED SALE OF PENTON COMMON STOCK

     In March 2003, the Company discovered that participants in the Plan from
     May 2001 through March 2003 had made purchases in the Penton Media, Inc.
     Stock Fund that were not registered under the federal securities laws. As a
     result, certain Plan participants had the right to rescind their purchases
     for an amount equal to the purchase price paid for the shares, plus
     interest from the date of purchase. On March 31, 2003, the Company filed a
     Form S-8 to register 6.0 million additional shares to be offered under the
     Plan.


                                       11

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS
--------------------------------------------------------------------------------


      In April 2003, the Company offered to reimburse participants who had
      purchased Company common stock through the Plan between March 25, 2002 and
      March 25, 2003. Employees who signed a release of federal securities law
      claims were reimbursed the amount by which the price paid for the common
      stock exceeded the closing price of the stock on the date they executed
      the release, or if the stock had been sold, the amount by which the price
      paid by the employee exceeded the sales price. In July 2003, a total of
      $599,268 was deposited by the Company into the accounts of participants
      who accepted the offer and executed the release. Employees who did not
      sign the release by May 22, 2003, retained their rights under the Federal
      securities laws. All rescissionary rights expired on March 14, 2004.

  4.  PARTY-IN-INTEREST TRANSACTIONS

      Plan investments managed by and fees paid to the Trustee qualify as a
      party-in-interest transaction. Party-in-interest transactions also include
      loans made to participants and investments made in the Penton Media, Inc.
      Stock Fund and the Aptar Group Inc. Stock Fund.

  5.  PLAN TERMINATION

      Although it has not expressed any intent to do so, the Company has the
      right under the Plan to amend or terminate the Plan subject to the
      provisions of ERISA. In the event the Plan is terminated, the participants
      are immediately entitled to the full value of their account. The Company
      also has the right under the Plan to discontinue its contributions at
      anytime.

  6.  INVESTMENTS

      The following are investments that represent 5% or more of the Plan's net
      assets at December 31:



      INVESTMENTS, AT FAIR VALUE:                                                2003              2002

                                                                                        
          Fidelity Retirement Government Money Market Portfolio,            $ 10,048,354       $ 11,201,427
               10,048,354 and 11,201,427 shares, respectively

          Fidelity Growth & Income Portfolio,                               $  8,209,679       $  7,102,956
               230,415 and 234,344 shares, respectively

          Fidelity Magellan Fund,                                           $ 13,756,652       $ 12,060,814
                140,747 and 152,746 shares, respectively

          Fidelity Aggressive Growth Fund,                                  $   4,308,132      $  3,138,507
                288,555 and 280,474 shares, respectively

          Fidelity Diversified International Fund,                          $  2,962,615       $          -
               122,828 shares





                                       12

PENTON MEDIA, INC.
401(k) RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS
--------------------------------------------------------------------------------


     The Plan's investments appreciated in value for the year ended December 31,
     as follows:



                                                      2003

                                              
       Registered investment companies           $   6,900,630
       Common Stock                                    980,220
                                                 -------------
       Total                                     $   7,880,850
                                                 =============



  7. FEDERAL INCOME TAX STATUS

     The Plan received a favorable determination letter from the Internal
     Revenue Service dated September 26, 2002. The plan administrator believes
     that the Plan is designed and is currently being operated in compliance
     with the applicable requirements of the Internal Revenue Code, therefore,
     no provision for income taxes has been included in the Plan's financial
     statements.

  8. SUBSEQUENT EVENTS

     In March 2004, the Company amended the Plan to change the Plan name to the
     Penton Media, Inc. Retirement and Savings Plan. In addition, the Company
     established an employer contribution account for each domestic employee in
     which the Company will make monthly contributions to each account equal to
     between 3% and 6% of the employee's annual salary, based on age and years
     of service. The Company's contributions become fully vested once the
     employee completes five years of service.








                                       13




       PENTON MEDIA, INC. 401(k) RETIREMENT SAVINGS PLAN E.I.N. 36-2875386
                  SCHEDULE H, PART IV, ITEM 4i PLAN NUMBER 005
                    SCHEDULE OF ASSETS (HELD AT END OF YEAR)



IDENTITY OF ISSUE, BORROWER,
LESSOR OR SIMILAR PARTY                   DESCRIPTION OF INVESTMENTS                                     FAIR VALUE
----------------------------------------  ----------------------------------------------------------- ---------------


                                                                                                  
                                          Mutual Funds:
* Fidelity Investments                       Fidelity Magellan Fund                                     $ 13,756,652
                                             Fidelity Retirement Government Money Market Portfolio        10,048,354
                                             Fidelity Growth & Income Portfolio                            8,209,679
                                             Fidelity Aggressive Growth Fund                               4,308,132
                                             Fidelity Diversified International Fund                       2,962,615
                                             Spartan 500 Index Fund                                        2,423,536
                                             Fidelity Freedom Funds                                          779,130
                                             Fidelity Mid-Cap Stock Fund                                     653,878
   PIMCO Advisors                            PIMCO Total Return Fund II                                    1,619,765
   Morgan Stanley                            Morgan Stanley Value Added Equity Fund                          935,301
   Neuberger Berman Management               Neuberger Berman Genesis Trust                                  874,561

                                          Common/Collective Trust:
* Fidelity Investments                       Fidelity Managed Income Portfolio                             1,581,940

                                          Common Stock:
* Penton Media, Inc.                         Penton Media, Inc. Stock                                      1,723,026

                                          Varying maturity dates and interest
* Participant Loans                       ranging from 5.0% to 11.50%                                      1,091,128
                                                                                                      ---------------

                                                                                                        $ 50,967,697
                                                                                                      ---------------









  * Represents a party-in-interest


Note: This information has been certified as complete and accurate by the
trustee and custodian in accordance with 20 CFR 2520.103-5 of the Department of
Labor's Rules and Regulations for Reporting and Disclosure under the Employee
Retirement Income Security Act of 1974.





                                       14





                                   SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the
trustees (or other persons who administer the Plan) have duly caused this annual
report to be signed on its behalf by the undersigned hereunto duly authorized.



PENTON MEDIA, INC. 401(k) RETIREMENT SAVINGS PLAN








BY:  /s/   PRESTON L. VICE
   ------------------------------
     Preston L. Vice
     Chief Financial Officer and
     Member of Administrative Committee of
     Penton Media Inc., 401(k) Retirement and Savings Plan



Date: June 18, 2004









                                       15