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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act File Number: 811-10377

Registrant Name: PIMCO Municipal Income Fund

Address of Principal Executive Offices: 1345 Avenue of the Americas New York, New York 10105

Name and Address of Agent for Service: Lawrence G. Altadonna — 1345 Avenue of the Americas New York, New York 10105

Registrant’s telephone number, including area code: 212-739-3371

Date of Fiscal Year End: April 30, 2008

Date of Reporting Period: July 31, 2007

Form N-Q is to be used by the registered management investment company, other than a small business investment company registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b 1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (‘‘OMB’’) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.




Item 1.    Schedule of Investments

PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*

MUNICIPAL BONDS & NOTES–95.9%

     

Alabama–2.3%

       
$ 2,500   Birmingham Baptist Medical Centers Special Care Facs. Financing Auth. Rev., 5.875%, 11/15/24, Ser. A Baa1/NR $ 2,608,500  
  8,000   Huntsville Health Care Auth. Rev., 5.75%, 6/1/31, Ser. A, (Pre-refunded @ $101, 6/1/11) (b) A2/NR   8,607,840  
  2,500   Tuscaloosa Educational Building Auth. Rev., 5.00%, 6/1/26 NR/BBB−   2,425,650  
            13,641,990  
     

Alaska–1.1%

       
  6,000   Northern Tobacco Securitization Corp. Rev., 5.50%, 6/1/29, (Pre-refunded @ $100, 6/1/11) (b) Aaa/AAA   6,344,520  
     

Arizona–1.1%

       
  2,000   Apache Cnty. Industrial Dev. Auth., Pollution Control Rev., Tucson Electric Power Co., 5.875%, 3/1/33, Ser. B Baa3/B+   2,001,920  
  1,260   Pima Cnty. Industrial Dev. Auth. Rev., 5.00%, 6/1/37 NR/BBB−   1,207,206  
  3,500   Salt River Project Agricultural Improvement & Power Dist. Rev., 4.75%, 1/1/35, Ser. A Aa1/AA   3,514,315  
            6,723,441  
     

Arkansas–0.5%

       
  8,500   Dev. Finance Auth. Rev., zero coupon, 7/1/36 (AMBAC) Aaa/AAA   2,150,925  
      Little Rock Municipal Property Owners Multipurpose Improvement Dist., Special Tax, Ser. A,        
  425   5.00%, 3/1/16 NR/NR   424,396  
  500   5.25%, 3/1/23 NR/NR   500,725  
            3,076,046  
     

California–4.5%

       
      Golden State Tobacco Securitization Corp. Rev., Ser. A-1,        
  6,000   5.00%, 6/1/33 Baa3/BBB   5,604,060  
  10,000   6.75%, 6/1/39, (Pre-refunded @ $100, 6/1/13) (b) Aaa/AAA   11,466,600  
  10,000   Riverside Cnty. Public Financing Auth., Tax Allocation, 4.50%, 10/1/30, Ser. A (XLCA) Aaa/AAA   9,664,200  
            26,734,860  
     

Colorado–2.5%

       
  600   Black Hawk Rev., 5.00%, 12/1/18 NR/NR   609,150  
      Denver Health & Hospital Auth. Healthcare Rev., Ser. A (b),        
  2,000   5.375%, 12/1/28, (Pre-refunded @ $101, 12/1/08) Baa3/BBB   2,060,640  
  1,000   6.00%, 12/1/23, (Pre-refunded @ $100, 12/1/11) Baa3/BBB   1,081,990  
  12,400   Health Facs. Auth. Rev., Liberty Heights, zero coupon, 7/15/24 NR/AAA   5,726,940  
  4,965   Northwest Parkway Public Highway Auth. Rev., 7.125%, 6/15/41, Ser. D B3/CCC   5,308,330  
            14,787,050  
     

Connecticut–0.2%

       
  1,000   State Dev. Auth. Pollution Control Rev., 5.85%, 9/1/28 Baa1/BBB−   1,035,880  
     

District of Columbia–0.9%

       
  5,010   Tobacco Settlement Financing Corp. Rev., 6.25%, 5/15/24 Baa3/BBB   5,259,247  



PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*
     

Florida–1.8%

       
$ 9,000   Highlands Cnty. Health Facs. Auth. Rev., Adventist Health System, 6.00%, 11/15/31, Ser. A, (Pre-refunded @ $101, 11/15/11) (b) A2/NR $ 9,807,120  
  500   Lee Cnty. Industrial Dev. Auth. Rev., 5.375%, 6/15/37, Ser. A BB/BB   490,850  
            10,297,970  
     

Georgia–1.8%

       
  10,000   Municipal Electric Auth. Power Rev. (MBIA-IBC), 5.50%, 1/1/20,
Ser. Z
Aaa/AAA   10,887,388  
     

Illinois–12.3%

       
      Chicago, GO, Ser. A (FGIC),        
  2,935   5.375%, 1/1/34, Aaa/AAA   3,013,805  
  6,145   5.375%, 1/1/34, Ser. A, (Pre-refunded @ $101, 1/1/09) (b) Aaa/AAA   6,338,260  
  10,115   Chicago Board of Education, GO, zero coupon, 12/1/31, Ser. A (FGIC) Aaa/AAA   3,182,584  
  2,000   Chicago Water Rev., 5.25%, 11/1/27, (Pre-refunded @ $102, 11/1/07) (FGIC) (b) Aaa/AAA   2,047,020  
      Educational Facs. Auth. Rev.,        
  1,115   Midwestern Univ., 5.50%, 5/15/18, Ser. B NR/A−   1,135,037  
      Univ. of Chicago,        
  5,000   5.125%, 7/1/38, Ser. A (i) NR/NR   5,077,650  
  190   5.25%, 7/1/41 Aa1/AA   197,226  
  4,810   5.25%, 7/1/41, (Pre-refunded @ $101, 7/1/11) (b) Aa1/AA   5,093,658  
      Finance Auth. Rev.,        
  1,500   5.00%, 12/1/36 NR/BBB   1,466,040  
  5,000   5.50%, 11/15/29, (Pre-refunded @ $101, 11/15/09) (b) A2/A+   5,226,450  
  1,260   5.65%, 11/15/24, (Pre-refunded @ $101, 11/15/09) (b) A2/A+   1,321,160  
      Health Facs. Auth. Rev.,        
  3,000   Decatur Memorial Hospital, 5.75%, 10/1/24 A2/A   3,129,090  
  5,425   Silver Cross Hospital, 5.50%, 8/15/25, (Pre-refunded @ $101, 8/15/09) (b) NR/A   5,656,159  
      Lake Cnty. Community High School Dist., GO, Ser. B (FGIC),        
  5,000   zero coupon, 2/1/19 Aaa/AAA   2,994,550  
  5,000   zero coupon, 2/1/20 Aaa/AAA   2,853,450  
  5,690   zero coupon, 2/1/22 Aaa/AAA   2,943,266  
  7,345   Regional Transportation Auth. Rev., 5.50%, 6/1/23, Ser. B (FGIC) Aaa/AAA   8,339,880  
  3,000   State Sales Tax Rev., 5.125%, 6/15/20, Ser. 1 Aa3/AAA   3,116,400  
      Univ. Rev. (FGIC),        
  1,495   5.25%, 4/1/32 Aaa/AAA   1,551,272  
  3,505   5.25%, 4/1/32, (Pre-refunded @ $100, 4/1/11) (b) Aaa/AAA   3,673,345  
  4,000   Winnebago-Boone ETC Cntys. Rock Valley Community College, Dist. No. 511, GO, 5.30%, 10/1/18, (Partially pre-refunded @ $100, 10/1/10) (FGIC) (b) Aaa/NR   4,134,720  
            72,491,022  
     

Indiana–2.5%

       
  500   Anderson Rev., 5.00%, 10/1/32 NR/NR   493,620  
  6,500   Carmel School Building Corp. Rev., 5.00%, 7/15/22, (Pre-refunded @ $101, 7/15/11) (MBIA) (b) Aaa/AAA   6,839,495  



PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*
     

Indiana–(continued)

       
$ 4,000   Health & Educational Facs. Financing Auth. Rev., Community Foundation of Northwest Indiana, 5.50%, 3/1/37 NR/BBB− $ 4,047,320  
  1,225   Richland-Bean Blossom School Building Corp. Rev., 5.00%, 1/15/22 (FGIC) Aaa/AAA   1,255,368  
  1,825   Zionsville Community Schools Building Corp. Rev., 5.00%, 7/15/27, Ser. A (FSA) NR/AAA   1,884,148  
            14,519,951  
     

Kansas–3.5%

       
  500   Lenexa Rev., 5.50%, 5/15/39, Ser. A NR/BBB−   507,515  
      Wichita Hospital Rev.,        
  5,000   5.625%, 11/15/31, Ser. III NR/A+   5,220,900  
  14,370   6.25%, 11/15/24, Ser. XI NR/A+   15,108,905  
            20,837,320  
     

Kentucky–0.2%

       
  910   Economic Dev. Finance Auth., Hospital Facs. Rev., St. Luke’s Hospital, 6.00%, 10/1/19, Ser. B A3/A   995,394  
     

Louisiana–5.8%

       
  4,300   Local Gov’t Environmental Facs. & Community Dev. Auth. Rev., 6.55%, 9/1/25 (ACA) NR/A   4,713,961  
  27,895   Tobacco Settlement Financing Corp. Rev., 5.875%, 5/15/39, Ser. 2001-B Baa3/BBB   29,549,174  
            34,263,135  
     

Maryland–0.2%

       
  1,150   Baltimore Water Project Rev., 5.125%, 7/1/42, Ser. A (FGIC) Aaa/AAA   1,183,350  
     

Massachusetts–1.9%

       
  550   Dev. Finance Agcy. Rev., 5.75%, 11/15/35, Ser. A NR/NR   562,810  
  10,000   Health & Educational Facs. Auth. Rev., Partners Healthcare Systems, 5.75%, 7/1/32, Ser. C (i) Aa2/AA   10,553,100  
            11,115,910  
     

Michigan–3.8%

       
      Detroit, GO, Ser. A-1 (MBIA),        
  1,000   5.375%, 4/1/15 Aaa/AAA   1,052,950  
  1,000   5.375%, 4/1/17 Aaa/AAA   1,051,390  
  5,650   Forest Hills Public Schools, GO, 5.25%, 5/1/18, (Pre-refunded @ $100, 5/1/10) (b) Aa2/NR   5,858,259  
  1,500   Garden City Hospital Finance Auth. Rev., 5.00%, 8/15/38, Ser. A NR/NR   1,391,025  
  3,000   Mount Clemens Community School Dist., GO, 5.00%, 5/1/31, (Partially pre-refunded @ $100, 11/1/11) (b) Aa3/AA   3,133,740  
  50   Royal Oak Hospital Finance Auth. Rev., William Beaumont Hospital, 11/15/35, Ser. M (MBIA) Aaa/AAA   51,325  
  4,000   State Hospital Finance Auth. Rev., Detroit Medical Center, 6.25%, 8/15/13 Ba3/BB−   4,020,040  
  775   State Public Educational Facs. Auth. Rev., 5.00%, 9/1/22 NR/BBB−   771,722  



PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*
     

Michigan–(continued)

       
$ 2,000   State Strategic Fund Ltd. Obligation Rev., Detroit Edison Pollution Control Co., 5.45%, 9/1/29 A3/BBB+ $ 2,056,480  
  3,000   Taylor Tax Increment Finance Auth., Tax Allocation, 5.375%, 5/1/17 (FSA) Aaa/AAA   3,151,530  
            22,538,461  
     

Minnesota–0.6%

       
      Agricultural & Economic Dev. Board Rev., Health Care System,        
  95   6.375%, 11/15/29 A2/A   101,584  
  2,905   6.375%, 11/15/29, (Pre-refunded @ $101, 11/15/10) (b) A2/A   3,160,262  
            3,261,846  
     

Missouri–0.6%

       
  2,500   Interstate 470 & 350 Transportation Dev. Dist. Rev., 6.35%, 5/1/22, (Pre-refunded @ $100, 5/1/08) (b) NR/NR   2,520,650  
  1,000   Joplin Industrial Dev. Auth. Rev., 5.75%, 5/15/26, Ser. F NR/NR   1,014,850  
            3,535,500  
     

Nevada–3.4%

       
  3,000   Clark Cnty. Rev., 5.25%, 7/1/34, Ser. B, (Pre-refunded @ $100, 7/1/11) (FGIC) (b) Aaa/AAA   3,153,270  
  4,250   Truckee Meadows Water Auth. Rev., 5.25%, 7/1/34, Ser. A, (Pre-refunded @ $100, 7/1/11) (FSA)(b) Aaa/AAA   4,467,132  
  12,185   Washoe Cnty., Water & Sewer, GO, 5.00%, 1/1/35 (MBIA) (i) NR/NR   12,624,513  
            20,244,915  
     

New Hampshire–0.5%

       
  3,000   State Business Finance Auth. Pollution Control Rev., Conn. Light & Power Co., 5.85%, 12/1/22 Baa1/BBB−   3,110,430  
     

New Jersey–3.7%

       
  16,550   Economic Dev. Auth., Kapkowski Road Landfill, Special Assessment, 5.75%, 4/1/31 Baa3/NR   17,861,257  
      Economic Dev. Auth. Rev., Arbor Glen,        
  2,510   5.875%, 5/15/16 NR/NR   2,569,864  
  450   5.875%, 5/15/16, Ser. A, (Pre-refunded @ $102, 5/15/09) (b) NR/NR   474,340  
  1,000   Health Care Facs. Financing Auth. Rev., Trinitas Hospital, 5.25%, 7/1/30, Ser. A Baa3/BBB−   995,070  
            21,900,531  
     

New Mexico–0.4%

       
  2,500   Farmington Pollution Control Rev., 5.80%, 4/1/22 Baa2/BBB   2,516,650  
     

New York–2.1%

       
  5,000   Liberty Dev. Corp. Rev., Goldman Sachs Headquarters, 5.25%, 10/1/35 NR/NR   5,305,050  
      New York City Municipal Water Finance Auth., Water & Sewer System Rev.,        
  1,120   5.00%, 6/15/37, Ser. D (i) Aa2/AA+   1,155,201  
  3,000   5.00%, 6/15/39, Ser. A Aa2/AA+   3,080,460  
  2,875   Westchester Cnty. Healthcare Corp. Rev., 5.875%, 11/1/25, Ser. A Ba2/BBB−   2,958,404  
            12,499,115  



PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*
     

North Carolina–0.5%

       
      Capital Facs. Finance Agcy., Duke Univ. Rev., Ser. A,        
$ 570   5.125%, 10/1/41 Aa1/AA+ $ 583,783  
  2,430   5.125%, 10/1/41, (Pre-refunded @ $100, 10/1/11) (b) Aaa/AAA   2,552,715  
            3,136,498  
     

Ohio–1.1%

       
      Lorain Cnty. Hospital Rev., Catholic Healthcare Partners,        
  2,500   5.625%, 10/1/17 Aa3/AA−   2,637,950  
  2,565   5.75%, 10/1/18 Aa3/AA−   2,713,590  
  1,235   State Turnpike Commission Rev., 5.50%, 2/15/15 Aa3/AA   1,300,443  
            6,651,983  
     

Pennsylvania–4.8%

       
      Allegheny Cnty. Rev., Hospital Dev. Auth.,        
  5,500   5.375%, 11/15/40, Ser. A Ba2/BB   5,354,140  
  5,780   9.25%, 11/15/30, Ser. B, (Pre-refunded @ $102, 11/15/10) (b) Ba3/CCC+   6,831,498  
  1,000   Industrial Dev. Auth., 5.60%, 9/1/30 Baa1/BBB+   1,027,340  
  1,095   Port Auth., 5.25%, 3/1/20 (FGIC) Aaa/AAA   1,147,056  
  2,575   Delaware Cnty. Auth. College Rev., Neumann College, 5.80%, 10/1/17 NR/BBB−   2,679,751  
  6,200   Higher Educational Facs. Auth. Rev., 6.00%, 1/15/31, Ser. A Aa3/A+   6,579,812  
  4,610   Philadelphia Hospitals & Higher Education Facs. Auth. Hospital Rev., Temple Univ. Hospital, 6.625%, 11/15/23, Ser. A Baa2/BBB   4,620,557  
            28,240,154  
     

Puerto Rico–3.2%

       
  850   Commonwealth of Puerto Rico, GO, 5.00%, 7/1/35, Ser. B Baa3/BBB   870,221  
  1,600   Electric Power Auth., Power Rev., 5.125%, 7/1/29, Ser. NN, (Pre-refunded @ $100, 7/1/13) (b) A3/BBB+   1,706,000  
  10,665   Gov’t. Dev. Bank for Puerto Rico Rev., 5.00%, 12/1/08, Ser. B Baa3/BBB   10,800,979  
      Puerto Rico Sales Tax Financing Corp. Rev., Ser. A,        
  32,550   zero coupon, 8/1/54 (AMBAC) Aaa/AAA   3,109,502  
  29,200   zero coupon, 8/1/56 A+/A1   2,327,240  
            18,813,942  
     

Rhode Island–3.2%

       
  18,000   Tobacco Settlement Financing Corp. Rev., 6.25%, 6/1/42, Ser. A Baa3/BBB   18,850,860  
     

South Carolina–4.4%

       
      Greenwood Cnty. Hospital Rev., Self Memorial Hospital,        
  3,500   5.50%, 10/1/21 A2/A   3,632,580  
  2,000   5.50%, 10/1/26 A2/A   2,072,700  
  3,000   Jobs Economic Dev. Auth. Hospital Facs. Rev., Georgetown Memorial Hospital, 5.375%, 2/1/30 (Radian) NR/AA   3,097,200  
  15,600   Tobacco Settlement Rev. Management Auth., 6.375%, 5/15/30,
Ser. B
Baa3/BBB   17,446,416  
            26,248,896  



PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*
     

Tennessee–0.1%

       
$ 940   Memphis Health Educational & Housing Fac. Rev., Wesley Housing Corp. Project, 6.95%, 1/1/20 (a)(d) NR/NR $ 474,406  
     

Texas–12.8%

       
  1,750   Austin Convention Enterprises, Inc. Rev., 5.75%, 1/1/32, Ser. B, (Pre-refunded @ $100, 1/1/11) (b) Aaa/NR   1,855,280  
  4,000   Austin Rev., 5.25%, 5/15/31, Ser. A & B (FSA) Aaa/AAA   4,125,480  
  2,935   Bell Cnty. Health Fac. Dev. Corp. Rev., 5.25%, 11/15/19, (Pre-refunded @ $101, 11/15/08) (b) NR/A−   2,970,015  
  10,000   Coppell Independent School Dist., GO, zero coupon, 8/15/29 (PSF-GTD) Aaa/AAA   3,493,900  
      Corpus Christi Refinance & Improvement, GO (FSA),        
  1,125   5.375%, 3/1/18 Aaa/AAA   1,173,386  
  1,740   5.375%, 3/1/18, (Pre-refunded @ $100, 3/1/11) (b) Aaa/AAA   1,829,036  
  9,000   Cypress-Fairbanks Independent School Dist., GO, 4.80%, 2/15/26, Ser. B (PSF-GTD) Aaa/AAA   9,131,670  
      Duncanville Independent School Dist., GO, Ser. B (PSF-GTD),        
  20   5.25%, 2/15/32 Aaa/AAA   20,733  
  3,660   5.25%, 2/15/32, (Pre-refunded @ $100, 2/15/12) (b) Aaa/AAA   3,866,570  
      Harris Cnty. Health Facs. Dev. Corp. Rev. (b),        
  5,000   Christus Health, 5.375%, 7/1/29, Ser. A, (Pre-refunded @ $101, 7/1/09) (MBIA) Aaa/AAA   5,192,100  
  7,000   Memorial Hermann Healthcare, 6.375%, 6/1/29, (Pre-refunded @ $101, 6/1/11) A2/A+   7,670,460  
  8,500   St. Luke’s Episcopal Hospital, 5.375%, 2/15/26, Ser. A, (Pre-refunded @ $100, 8/15/11) (i) NR/AAA   8,979,825  
      Mansfield Independent School Dist., GO (PSF-GTD),        
  285   5.25%, 2/15/23 Aaa/AAA   294,727  
  1,715   5.25%, 2/15/23, (Pre-refunded @ $100, 2/15/11) (b) Aaa/AAA   1,794,748  
  4,380   Southlake Park Dev. Corp. Rev., 5.60%, 8/15/31, (Pre-refunded @ $100, 2/15/11) (AMBAC)(b) Aaa/AAA   4,585,203  
  4,530   State, GO, 5.30%, 8/1/18, Ser. A Aa1/AA   4,695,934  
  19,990   State Turnpike Auth. Rev., zero coupon, 8/15/25, Ser. A (AMBAC) Aaa/AAA   8,695,050  
  4,920   Univ. Rev., 5.00%, 7/1/26, Ser. B, (Pre-refunded @ $100, 7/1/14) (b) Aaa/AAA   5,226,565  
            75,600,682  
     

Utah–1.2%

       
  7,000   Salt Lake Cnty. Hospital Rev., IHC Health Services, 5.125%, 2/15/33 (AMBAC) Aaa/AAA   7,317,870  
     

Washington–2.4%

       
      Cowlitz Cnty. School Dist. No. 458 Kelso, GO, (Pre-refunded @ $100, 12/1/11) (FSA) (b),        
  985   5.625%, 12/1/14 Aaa/NR   1,054,836  
  1,225   5.625%, 12/1/16 Aaa/NR   1,311,852  
  3,415   Kent, GO, 5.375%, 12/1/20 (MBIA) Aaa/AAA   3,587,492  
  5,420   King Cnty. School Dist. No. 1 Seattle, GO, 5.25%, 12/1/21, Ser. A (MBIA) Aaa/AAA   5,662,382  



PIMCO Municipal Income Fund 
Schedule of Investments
July 31, 2007 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody’s/S&P)
Value*
     

Washington–(continued)

       
      State Housing Finance Commission Rev., Skyline at First Hill,
Ser. A,
       
$ 275   5.25%, 1/1/17 NR/NR $ 273,576  
  2,250   5.625%, 1/1/38 NR/NR   2,263,748  
            14,153,886  
     

Wisconsin–4.0%

       
      Badger Tobacco Asset Securitization Corp. Rev.,        
  5,000   5.75%, 6/1/12 Baa3/BBB   5,288,150  
  9,785   6.00%, 6/1/17 Baa3/BBB   10,463,003  
      Health & Educational Facs. Auth. Rev.,        
  2,250   Divine Savior Healthcare, 5.00%, 5/1/32 NR/BBB   2,230,897  
  2,230   Kenosha Hospital & Medical Center, 5.625%, 5/15/29 NR/A   2,263,873  
  3,515   State, GO, 5.00%, 5/1/22, Ser. A (FGIC) Aaa/AAA   3,637,674  
            23,883,597  
      Total Municipal Bonds & Notes (cost–$537,786,010)     567,174,696  

VARIABLE RATE NOTES (c)(f)–3.5%

     

Hawaii–0.3%

       
  1,388   City & Cnty. of Honolulu Rev., 9.84%, 7/1/23, Ser. 400 (FGIC) (e) Aaa/NR   1,566,487  
     

Illinois–0.6%

       
  2,902   Cook Cnty., GO, 9.84%, 11/15/28, Ser. 458 (FGIC) (e) Aaa/NR   3,236,113  
     

New York–1.6%

       
      New York City Municipal Water Finance Auth., Water & Sewer System Rev.,        
  2,600   7.13%, 6/15/26 (e) NR/AA+   2,948,270  
  6,000   8.658%, 6/15/39 Aa2/AA2   6,722,160  
            9,670,430  
     

Texas–0.7%

       
  3,595   Harris Cnty. Health Facs. Dev. Corp. Rev., 11.72%, 7/1/29,
Ser. 357 (MBIA) (e)
Aaa/NR   4,285,600  
     

Washington–0.3%

       
  1,800   Seattle, GO, 10.47%, 12/15/28, Ser. 348 (e) Aa1/NR   1,967,760  
      Total Variable Rate Notes (cost–$17,853,591)     20,726,390  

COMMON STOCK–0.5%

Shares          
  158,560   Northwest Airlines Corp. (h) (cost–$4,068,918)     2,763,701  

U.S. TREASURY BILLS (g)–0.1%

Principal
Amount
(000)
         
$865   4.405%-4.755%, 8/30/07-9/13/07 (cost–$860,382)     860,382  
     

Total Investments (cost–$560,568,901)–100.0%

  $591,525,16 



Notes to Schedule of Investments:

* Portfolio securities and other financial instruments for which market quotations are readily available are stated at market value. Portfolio securities and other financial instruments for which market quotations are not readily available or if a development/event occurs that may significantly impact the value of a security are fair-valued, in good faith, pursuant to guidelines established by the Board of Trustees. The Fund’s investments are valued daily using prices supplied by an independent pricing service or dealer quotations, or are valued at the last sale price on the exchange that is the primary market for such securities, or the last quoted bid price for those securities for which the over-the-counter market is the primary market or for listed securities in which there were no sales. Independent pricing services use information provided by market makers or estimates of market values obtained from yield data relating to investments or securities with similar characteristics. Exchange traded options and futures are valued at the settlement price determined by the relevant exchange. Short-term investments maturing in 60 days or less are valued at amortized cost, if their original term to maturity was 60 days or less, or by amortizing their value on the 61st day prior to maturity, if the original term to maturity exceeded 60 days. The prices used by the Fund to value securities may differ from the value that would be realized if the securities were sold. The Fund’s net asset value is determined daily as of the close of regular trading (normally, 4:00 p.m. Eastern time) on the New York Stock Exchange (‘‘NYSE’’) on each day the NYSE is open for business.
(a) Illiquid security.
(b) Pre-refunded bonds are collateralized by U.S. Government or other eligible securities which are held in escrow and used to pay principal and interest and retire the bonds at the earliest refunding date (payment date) and/or whose interest rates vary with changes in a designated base rate (such as the prime interest rate).
(c) 144A Security – Security exempt from registration, under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration, typically only to qualified institutional buyers. Unless otherwise indicated, these securities are not considered to be illiquid.
(d) Fair-valued security – Securities with an aggregate value of $474,406, representing 0.08% of total investments, have been fair-valued.
(e) Inverse Floater – The interest rate shown bears an inverse relationship to the interest rate on another security or the value of an index.
(f) Variable Rate Notes – Instruments whose interest rates change on specified date (such as a coupon date or interest payment date) and/or whose interest rates vary with changes in a designated base rate (such as the prime interest rate). The interest rate disclosed reflects the rate in effect on July 31, 2007.
(g) All or partial amount segregated as initial margin on futures contracts.
(h) Non-income producing.
(i) Residual Interest Bonds held in trust – Securities represent underlying bonds transferred to a separate securitization trust established in a tender option bond transaction in which the Fund acquired the residual interest certificates. These securities serve as collateral in a financing transaction.

Glossary:

ACA – insured by American Capital Access Holding Ltd.
AMBAC – insured by American Municipal Bond Assurance Corp.
FGIC – insured by Financial Guaranty Insurance Co.
FSA – insured by Financial Security Assurance, Inc.
GO – General Obligation Bond
GTD – Guaranteed
IBC – Insurance Bond Certificate
MBIA – insured by Municipal Bond Investors Assurance
NR – Not Rated
PSF – Public School Fund
Radian – insured by Radian Guaranty, Inc.
XLCA – insured by XL Capital Assurance



Other Investments:

(1) Futures contracts outstanding at July 31, 2007:


Type Contracts Market
Value
(000)
Expiration
Date
Unrealized
Appreciation
(Depreciation)
Long: Financial Future Euro – 90 day 176 $ 41,679 9/17/07 $(129,600 ) 
  Financial Future Euro – 90 day 176 41,758 12/17/07 (52,600 ) 
  Financial Future Euro – 90 day 176 41,826 3/17/08 20,000
Short: U.S. Treasury Bond Futures (296 )  (32,579 )  9/19/07 (456,312 ) 
  U.S. Treasury Notes 10 yr. Futures (354 )  (38,027 )  9/19/07 (282,094 ) 
          $(900,606 ) 



Item 2. Controls and Procedures

(a)  The registrant’s President and Chief Executive Officer and Principal Financial Officer have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-2(c) under the Act (17CFR270.30a-3(c)), as amended are effective based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this document.
(b)  There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d)) under the Act (17 CFR270.30a-3(d)) that occurred during the registrant’s last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3. Exhibits

(a) Exhibit 99.302 Cert. – Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002




SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Registrant: PIMCO Municipal Income Fund
By /s/ Brian S. Shlissel President & Chief Executive Officer

Date: September 19, 2007

By /s/ Lawrence G. Altadonna
Treasurer, Principal Financial & Accounting Officer

Date: September 19, 2007

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dated indicated.

By /s/ Brian S. Shlissel
President & Chief Executive Officer

Date: September 19, 2007

By /s/ Lawrence G. Altadonna
Treasurer, Principal Financial & Accounting Officer

Date: September 19, 2007