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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 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, NY 10105

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

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

Date of Fiscal Year End: April 30, 2008

Date of Reporting Period: January 31, 2008

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 
January 31, 2008 (unaudited)


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

MUNICIPAL BONDS & NOTES–96.6%

     

Alabama–2.8%

        $ 2,500   Birmingham Baptist Medical Centers Special Care Facs. Financing Auth. Rev., 5.875%, 11/15/24, Ser. A Baa1/NR $ 2,555,525     8,000   Huntsville Health Care Auth. Rev.,                   5.75%, 6/1/31, Ser. A, (Pre-refunded @ $101, 6/1/11) (b) A2/NR   8,886,400         Huntsville-Redstone Village Special Care Facs. Financing Auth. Rev.,           250       5.50%, 1/1/28 NR/NR   230,130     885       5.50%, 1/1/43 NR/NR   782,083     1,350   Montgomery Medical Clinic Board,                   Jackson Hospital & Clinic Rev., GO, 5.25%, 3/1/31 Baa2/BBB−   1,287,482     2,900   Tuscaloosa Educational Building Auth. Rev., 5.00%, 6/1/26 NR/BBB−   2,533,324               16,274,944        

Alaska–1.6%

          900   Industrial Dev. & Export Auth.,                   Boys & Girls Home Rev., 6.00%, 12/1/36 NR/NR   844,956         Northern Tobacco Securitization Corp. Rev.,           2,400       5.00%, 6/1/46, Ser. A Baa3/NR   2,008,728     6,000       5.50%, 6/1/29, (Pre-refunded @ $100, 6/1/11) (b) Aaa/AAA   6,562,140               9,415,824        

Arizona–3.0%

          2,000   Apache Cnty. Industrial Dev. Auth. Pollution Control Rev.,                   Tucson Electric Power Co., 5.875%, 3/1/33 Baa3/B+   1,915,280     2,750   Health Facs. Auth. Rev., Beatitudes Project, 5.20%, 10/1/37 NR/NR   2,307,085         Pima Cnty. Industrial Dev. Auth. Rev.,           1,260       5.00%, 6/1/37 NR/BBB−   1,128,368     12,045       5.00%, 9/1/39 Aa2/AA   11,875,165               17,225,898        

Arkansas–0.5%

          8,500   Arkansas Dev. Finance Auth. Rev., zero coupon, 7/1/36 (AMBAC) Aaa/NR   2,030,735         Little Rock Municipal Property Owners Multipurpose Improvement Dist., Special Tax, Ser. A,           425       5.00%, 3/1/16 NR/NR   419,160     500       5.25%, 3/1/23 NR/NR   477,425               2,927,320        

California–3.0%

              Golden State Tobacco Securitization Corp. Tobacco Setlement Rev., Ser. A-1,           6,000       5.00%, 6/1/33 Baa3/BBB   5,272,800     10,000       6.75%, 6/1/39, (Pre-refunded @ $100, 6/1/13) (b) Aaa/AAA   11,815,200               17,088,000  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

Colorado–2.7%

        $ 500   Confluence Metropolitan Dist. Rev., 5.45%, 12/1/34 NR/NR $ 432,575         Denver Health & Hospital Auth. Healthcare Rev., Ser. A (b),           2,000       5.375%, 12/1/28, (Pre-refunded @ $101, 12/1/08) NR/BBB   2,074,220     1,000   6.00%, 12/1/23, (Pre-refunded @ $100, 12/1/11) NR/BBB   1,121,350     12,400   Health Facs. Auth. Rev., Liberty Heights, zero coupon, 7/15/24 (b) Aaa/AAA   5,898,184     4,965   Northwest Parkway Public Highway Auth. Rev.,                   7.125%, 6/15/41, Ser. D, (Pre-refunded @ $102, 6/15/11) (b) NR/NR   5,732,490               15,258,819        

Connecticut–0.2%

          1,000   State Dev. Auth. Pollution Control Rev., 5.85%, 9/1/28 Baa1/BBB−   1,024,570                        

District of Columbia–0.9%

          5,010   Tobacco Settlement Financing Corp. Rev., 6.25%, 5/15/24 Baa3/BBB   5,128,036        

Florida–2.2%

          1,000   Beacon Lakes Community Dev. Dist.,                   Special Assessment, 6.00%, 5/1/38, Ser. A NR/NR   875,980     940   Dev. Finance Corp. Rev., Learning Gate Community School,                   6.00%, 2/15/37 NR/BBB−   895,416     9,000   Highlands Cnty. Health Facs. Auth. Rev., Adventist/Sunbelt,                   6.00%, 11/15/31, Ser. A, (Pre-refunded @ $101, 11/15/11) (b) A1/NR   10,133,820     500   Lee Cnty. Industrial Dev. Auth. Rev., 5.375%, 6/15/37, Ser. A NR/BB   433,655               12,338,871        

Georgia–0.3%

          2,300   Medical Center Hospital Auth. Rev., 5.25%, 7/1/37 NR/NR   1,994,859        

Illinois–11.4%

              Chicago, GO Ser. A (FGIC),           2,935       5.375%, 1/1/34 Aaa/AAA   3,027,423     4,145       5.375%, 1/1/34, (Pre-refunded @ $101, 1/1/09) (b) Aaa/AAA   4,313,992     10,115   Chicago Board of Education, GO, zero coupon, 12/1/31, Ser. A (FGIC) Aaa/AAA   2,915,952         Educational Facs. Auth. Rev.,           1,115       Midwestern Univ., GO, 5.50%, 5/15/18, Ser. B NR/AAA   1,131,324             Univ. of Chicago, GO,           5,000           5.125%, 7/1/38, Ser. A (i) Aa1/AA   5,066,600     190           5.25%, 7/1/41 Aa1/AA   197,321     4,810           5.25%, 7/1/41, (Pre-refunded @ $101, 7/1/11) (b) Aa1/AA   5,285,126         Finance Auth. Rev.,           5,000       5.50%, 11/15/29, (Pre-refunded @ $101, 11/15/09) (b) A1/NR   5,333,150     1,260       5.65%, 11/15/24, (Pre-refunded @ $101, 11/15/09) (b) A1/NR   1,347,230     1,000       6.25%, 8/15/35, Ser. A (d) NR/NR   987,060     3,800       7.00%, 12/1/37, Ser. A NR/NR   3,807,486         Health Facs. Auth. Rev.,           3,000       Decatur Memorial Hospital, 5.75%, 10/1/24 A2/A   3,119,790     5,425       Silver Cross Hospital,                   5.50%, 8/15/25, (Pre-refunded @ $101, 8/15/09) (b) NR/A   5,752,561  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

Illinois–(continued)

              Lake Cnty. Community High School Dist., GO, Ser B. (FGIC),         $ 5,000       zero coupon, 2/1/19 Aaa/AAA $ 3,139,550     5,000       zero coupon, 2/1/20 Aaa/AAA   2,960,350     5,690       zero coupon, 2/1/22 Aaa/AAA   2,987,136     7,345   Regional Transportation Auth. Rev., 5.50%, 6/1/23, Ser. B (FGIC) Aaa/AAA   8,343,920         Univ. Rev. (FGIC),           1,495       5.25%, 4/1/32 Aaa/AAA   1,556,549     3,505       5.25%, 4/1/32, (Pre-refunded @ $100, 4/1/11) (b) Aaa/AAA   3,807,832               65,080,352        

Indiana–0.7%

          500   Anderson Rev., 5.00%, 10/1/32 NR/NR   460,115     4,000   Health & Educational Facs. Financing Auth. Rev.,                   Community Foundation of Northwest Indiana, 5.50%, 3/1/37 NR/BBB−   3,747,040               4,207,155        

Iowa–1.9%

              Finance Auth. Rev.,           4,890       5.50%, 11/15/37 NR/NR   4,254,887     3,500       6.75%, 11/15/37 NR/NR   3,541,930     1,500       6.75%, 11/15/42 NR/NR   1,512,600     2,000       Wedum Walnut Ridge LLC, 5.625%, 12/1/45, Ser. A NR/NR   1,772,260               11,081,677        

Kansas–3.9%

          1,000   Lenexa, City Center East Tax Allocation, 6.00%, 4/1/27 NR/NR   948,710     500   Lenexa Rev., 5.50%, 5/15/39 NR/BBB−   456,980     650   Manhattan Rev., 5.125%, 5/15/42 NR/NR   547,124         Wichita Hospital Rev.,           5,000       5.625%, 11/15/31, Ser. III NR/A+   5,141,600     14,370       6.25%, 11/15/24, Ser. XI NR/A+   14,994,377               22,088,791        

Kentucky–0.2%

          860   Economic Dev. Finance Auth., Hospital Facs. Rev.,                   St. Luke’s Hospital, 6.00%, 10/1/19, Ser. B A3/A   865,126        

Louisiana–5.5%

          4,300   Local Gov’t Environmental Facs. & Community Dev. Auth. Rev., GO,                   6.55%, 9/1/25 (ACA) NR/NR   4,273,125     27,895   Tobacco Settlement Financing Corp. Rev., 5.875%, 5/15/39, Ser. 2001-B Baa3/BBB   27,286,889               31,560,014        

Maryland–0.2%

          1,150   Baltimore Water Project Rev., 5.125%, 7/1/42, Ser. A (FGIC) Aaa/AAA   1,169,193  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

Massachusetts–1.9%

        $ 550   State Dev. Finance Agcy. Rev., Linden Ponds, 5.75%, 7/1/32, Ser. A NR/NR $ 507,122     10,000   State Health & Educational Facs. Auth.,                   Partners Healthcare Systems Rev., 5.75%, 7/1/32, Ser. C (i) Aa2/AA   10,599,600               11,106,722        

Michigan–2.8%

          1,000   Detroit, GO, 5.375%, 4/1/17, Ser. A-1 (MBIA) Aaa/AAA   1,082,330     775   East Lansing Economic Corp., Burcham Hills Rev., 5.25%, 7/1/37 NR/NR   661,152     4,550   Garden City Hospital Finance Auth. Rev., 5.00%, 8/15/38, Ser. A NR/NR   3,648,873     3,000   Mount Clemens Community School Dist.,                   GO, 5.00%, 5/1/31, (Pre-refunded @ $100, 11/1/11) (Q-SBLF) (b) Aa3/AA−   3,261,540     50   Royal Oak Hospital Finance Auth. Rev.,                   William Beaumont Hospital, 5.25%, 11/15/35, Ser. M (MBIA) Aaa/AAA   51,042     460   Star International Academy, CP, 6.125%, 3/1/37 (ACA) NR/BB+   460,363     4,000   State Hospital Finance Auth. Rev.,                   Detroit Medical Center, 6.25%, 8/15/13 Ba3/BB−   4,020,880     775   State Public Educational Facs. Auth. Rev., 5.00%, 9/1/22 NR/BBB−   738,707     2,000   State Strategic Fund Ltd. Obligation Rev.,                   Detroit Edison Pollution Control Co., 5.45%, 9/1/29 A3/A−   2,039,500               15,964,387        

Minnesota–1.0%

              Agricultural & Economic Dev. Board Rev., Health Care System,           95       6.375%, 11/15/29 A2/A   100,281     2,905       6.375%, 11/15/29, (Pre-refunded @ $101, 11/15/10) (b) A2/A   3,238,058         North Oaks, Presbyterian Homes Rev.,           1,070       6.00%, 10/1/33 NR/NR   1,047,969     620       6.125%, 10/1/39 NR/NR   611,828     100   Rochester Rev., 5.30%, 4/1/37, Ser. A NR/NR   86,958     500   Washington Cnty. Housing & Redev. Auth., 5.625%, 6/1/37, Ser. A NR/NR   443,550               5,528,644        

Missouri–0.7%

          750   Branson Regional Airport Transportation Dev. Dist. Rev.,                   6.00%, 7/1/37, Ser. A NR/NR   709,477     2,500   Interstate 470 & 350 Transportation Dev. Dist. Rev.,                   6.35%, 5/1/22, (Pre-refunded @ $100, 5/1/08) (b) NR/NR   2,525,600     1,000   Joplin Industrial Dev. Auth. Rev., 5.75%, 5/15/26, Ser. F NR/NR   988,760               4,223,837        

Nevada–3.6%

          3,000   Clark Cnty. Rev., 5.25%, 7/1/34,                   Ser. B, (Pre-refunded @ $100, 7/1/11) (FGIC) (b) Aaa/AAA   3,273,810     4,250   Truckee Meadows Water Auth. Rev.,                   5.25%, 7/1/34, Ser. A, (Pre-refunded @ $100, 7/1/11) (FSA) (b) Aaa/AAA   4,637,897     12,185   Washoe Cnty., GO, 5.00%, 1/1/35 (MBIA) (i) Aaa/AAA   12,488,163               20,399,870  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

New Hampshire–0.5%

        $ 3,000   State Business Finance Auth. Pollution Control Rev.,                   Conn. Light & Power Co., 5.85%, 12/1/22 Baa1/BBB− $ 3,077,640        

New Jersey–5.0%

          16,550   Economic Dev. Auth., Kapkowski Road Landfill,                   Special Assessment, 5.75%, 4/1/31 Baa3/NR   16,797,588         Economic Dev. Auth. Rev., Arbor Glen,           2,510       5.875%, 5/15/16 NR/NR   2,567,805     450       5.875%, 5/15/16, Ser. A, (Pre-refunded @ $102, 5/15/09) (b) NR/NR   480,591     1,000   Health Care Facs. Financing Auth. Rev.,                   Trinitas Hospital, 5.25%, 7/1/30, Ser. A Baa3/BBB−   935,020     9,100   Tobacco Settlement Financing Corp. Rev., 5.00%, 6/1/41, Ser. 1A (i) Baa3/BBB   7,794,059               28,575,063        

New Mexico–0.4%

          2,500   Farmington Pollution Control Rev., 5.80%, 4/1/22 Baa2/BBB−   2,504,000        

New York–2.0%

          4,200   Nassau Cnty. Industrial Dev. Agcy. Rev.,                   Amsterdam at Harborside, 6.70%, 1/1/43, Ser. A NR/NR   4,278,708             New York City Municipal Water Finance Auth.,
Water & Sewer System Rev.           1,120       5.00%, 6/15/37, Ser. D (i) Aa2/AA+   1,153,992     3,000       5.00%, 6/15/39, Ser. A Aa2/AA+   3,080,340     2,875   Westchester Cnty. Healthcare Corp. Rev., 5.875%, 11/1/25, Ser. A Baa3/BBB−   2,886,299               11,399,339        

North Carolina–0.8%

              Capital Facs. Finance Agcy., Duke Univ. Rev., Ser. A,           570       5.125%, 10/1/41 Aa1/AA+   584,358     2,430       5.125%, 10/1/41, (Pre-refunded @ $100, 10/1/11) (b) Aaa/AAA   2,652,321     1,500   Medical Care Commission Rev., 5.25%, 1/1/32 NR/NR   1,276,530               4,513,209        

North Dakota–1.0%

          5,400   Stark Cnty., 6.75%, 1/1/33 NR/NR   5,433,102        

Ohio–2.8%

          11,000   Buckeye Tobacco Settlement Financing Auth. Rev.,                   5.875%, 6/1/47, Ser. A-2 Baa3/BBB   10,647,230         Lorain Cnty. Hospital Rev., Catholic Healthcare,           2,500   5.625%, 10/1/17 A1/AA−   2,654,875     2,565   5.75%, 10/1/18 A1/AA−   2,724,799               16,026,904        

Pennsylvania–5.1%

              Allegheny Cnty. Hospital Dev. Auth. Rev.,           8,600   5.375%, 11/15/40, Ser. A Ba2/BB   7,523,108     5,780   9.25%, 11/15/30, Ser. B, (Pre-refunded @ $102, 11/15/10) (b) Ba3/AAA   6,896,985  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

Pennsylvania–(continued)

        $ 1,000   Allegheny Cnty. Industrial Dev. Auth. Rev., 5.60%, 9/1/30 Baa1/BBB+ $ 1,018,320     500   Cumberland Cnty. Municipal Auth. Rev., 5.625%, 7/1/28 (d) NR/BBB−   493,700     2,575   Delaware Cnty. Auth. College Rev., Neumann College, 5.80%, 10/1/17 NR/BBB   2,716,677     2,000   Harrisburg Auth. Rev., 6.00%, 9/1/36 NR/NR   1,965,020         Higher Educational Facs. Auth. Rev.,           6,200        6.00%, 1/15/31, Ser. A Aa3/AA−   6,558,980     1,000   LaSalle Univ., 5.00%, 5/1/37, Ser. A NR/BBB   941,440         Lancaster Cnty. Hospital Auth., Ser. A           750   6.25%, 7/1/26 NR/NR   753,645     85   6.375%, 7/1/30 NR/NR   85,202               28,953,077        

Puerto Rico–1.1%

          135   Commonwealth of Puerto Rico, GO, 5.00%, 7/1/35 Baa3/BBB−   129,928         Electric Power Auth. Power Rev., Ser. NN, 5.125%, 7/1/29           1,600   (Pre-refunded@$100,7/1/13)(b) A3/AAA   1,788,768         Puerto Rico Sales Tax Financing Corp. Rev.,           32,550   zero coupon, 8/1/54 (AMBAC) Aaa/AAA   2,577,635     29,200   zero coupon, 8/1/56 A1/A+   2,073,200               6,569,531        

Rhode Island–4.2%

          23,800   Tobacco Settlement Financing Corp. Rev., 6.25%, 6/1/42, Ser. A Baa3/BBB   23,904,482        

South Carolina–4.4%

              Greenwood Cnty. Hospital Rev., Self Memorial Hospital,           3,500   5.50%, 10/1/21 A2/A   3,630,865     2,000   5.50%, 10/1/26 A2/A   2,050,340     3,000   Jobs Economic Dev. Auth. Hospital Facs. Rev.,               Georgetown Memorial Hospital, 5.375%, 2/1/30 (Radian) NR/AA   3,007,050     450   Jobs Economic Dev. Auth. Rev., 5.50%, 5/1/28 NR/NR   413,424     15,600   Tobacco Settlement Rev. Management Auth. Rev.,               6.375%, 5/15/30, Ser. B Baa3/BBB   15,868,632               24,970,311        

Tennessee–0.7%

          940   Memphis Health Educational & Housing Fac. Rev.,               Wesley Housing Corp. Project, 6.95%, 1/1/20 (a) (j) NR/NR   470,000     3,500   Sumner Cnty. Health Educational & Housing Facs. Board, 5.50%, 11/1/37 NR/NR   3,424,470               3,894,470        

Texas–10.4%

          1,750   Austin Convention Enterprises, Inc. Rev., 5.75%, 1/1/32, Ser. B, (Pre-refunded @ $100, 1/1/11) (b) Aaa/NR   1,911,472     4,000   Austin Rev., 5.25%, 5/15/31, Ser. A & B (FSA) Aaa/AAA   4,117,200  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

Texas–(continued)

        $ 2,935   Bell Cnty. Health Fac. Dev. Corp. Rev., 5.25%, 11/15/19, (Pre-refunded @ $101, 11/15/08) (b) NR/AAA $ 3,039,163     10,000   Coppell Independent School Dist., GO, zero coupon, 8/15/29, (PSF-GTD) Aaa/AAA   3,497,500         Duncanville Independent School Dist., GO, Ser. B (PSF-GTD),           20   5.25%, 2/15/32 Aaa/AAA   20,703     3,660   5.25%, 2/15/32, (Pre-refunded @ $100, 2/15/12) (b) Aaa/AAA   4,031,527     5,000   Harris Cnty. Health Facs. Dev. Corp. Rev., (b),
Christus Health, 5.375%, 7/1/29, Ser. A, (Pre-refunded @ $101, 7/1/09) (MBIA) Aaa/AAA   5,273,350     7,000       Memorial Hermann Healthcare, 6.375%, 6/1/29, (Pre-refunded @ $101, 6/1/11) A2/A   7,902,160     8,500       St. Lukes Episcopal Hospital Rev., 5.375%, 2/15/26, Ser. A, (Pre-refunded @ $100, 8/15/11) (i) NR/AAA   9,323,225         Mansfield Independent School Dist., GO (PSF-GTD),           1,715   5.25%, 2/15/23, (Pre-refunded @ $100, 2/15/11) (b) Aaa/AAA   1,857,431     285   5.25%, 2/15/23 Aaa/AAA   295,967     4,380   Southlake Park Dev. Corp. Rev.,               5.60%, 8/15/31, (Pre-refunded @ $100, 2/15/11) (AMBAC) (b) Aaa/AAA   4,546,265     400   State Public Finance Auth. Rev., 5.875%, 12/1/36, Ser. A Baa3/BBB−   395,304     19,990   State Turnpike Auth. Rev., zero coupon, 8/15/25, Ser. A (AMBAC) Aaa/AAA   8,512,941     4,530   State Water Financial Assistance, GO, 5.30%, 8/1/18, Ser. A Aa1/AA   4,738,154               59,462,362        

Utah–1.4%

          7,000   Salt Lake Cnty. Hospital Rev.,               IHC Health Services, 5.125%, 2/15/33 (AMBAC) (b) Aaa/AAA   7,449,400     600   Utah Cnty. Lincoln Academy Charter School,               GO, 5.875%, 6/15/37, Ser. A (ACA) (a) (c) NR/NR   572,952               8,022,352        

Virginia–0.3%

          2,000   Peninsula Town Center Community Dev. Auth. Rev., 6.45%, 9/1/37 NR/NR   1,963,620        

Washington–2.0%

          5,420   King Cnty. School Dist. No. 1 Seattle,                   GO, 5.25%, 12/1/21, Ser. A (MBIA) Aaa/AAA   5,700,810     2,000   State Health Care Facs. Auth. Rev., 6.125%, 8/15/37 Baa2/BBB   1,945,460         State Housing Finance Commission Rev., Skyline at First Hill,           275       5.25%, 1/1/17, Ser. A NR/NR   272,099     3,600       5.625%, 1/1/38, Ser. A NR/NR   3,278,880               11,197,249        

Wisconsin–3.5%

              Badger Tobacco Asset Securitization Corp. Rev.,           5,000       5.75%, 6/1/12 Baa3/BBB   5,268,750     9,785       6.00%, 6/1/17 Baa3/BBB   10,000,172     2,250   Health & Educational Facs. Auth. Rev.,                   Divine Savior Heathcare Rev., 5.00%, 5/1/32 NR/BBB   2,025,180  




PIMCO Municipal Income Fund Schedule of Investments 
January 31, 2008 (unaudited) (continued)


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

Wisconsin–(continued)

        $ 2,230       Kenosha Hospital & Medical Center, 5.625%, 5/15/29 NR/A $ 2,254,686     550   Milwaukee Redev. Auth. Rev., 5.65%, 8/1/37, Ser. A NR/NR   505,104               20,053,892         Total Municipal Bonds & Notes (cost–$533,099,640)     552,473,512  

VARIABLE RATE NOTES (a)(c)(e)(f)–3.7%

     

Hawaii–0.3%

          1,388   City & Cnty. of Honolulu Rev., 6.12%, 7/1/23, Ser. 400 (FGIC) Aaa/NR   1,556,303        

Illinois–0.5%

          2,902   Cook Cnty., GO, 12.12%, 11/15/28, Ser. 458 (FGIC) Aaa/NR   3,164,741        

New York–1.7%

              New York City Municipal Water Finance Auth., Water & Sewer System Rev.,           6,000       9.979%, 6/15/39 Aa2/NR   6,728,400     2,600       11.815%, 6/15/26 NR/AA+   2,975,570               9,703,970        

Texas–0.8%

          3,595   Harris Cnty. Health Facs. Dev. Corp. Rev.,                   14.60%, 7/1/29, Ser. 357 (MBIA) Aaa/NR   4,577,693        

Washington–0.4%

          1,800   Seattle, GO, 13.35%, 12/15/28, Ser. 348 Aa1/NR   2,045,700         Total Variable Rate Notes (cost–$17,843,029)     21,048,407  

U.S. TREASURY BILLS (g)–0.0%

  90   2.985%, 3/13/08 (cost–$89,695) NR/NR   89,695         Total Investments before options written (cost–$551,032,364)–100.3%   573,611,614  

OPTIONS WRITTEN (h)–(0.3)%

  Contracts                    

Call Options–(0.3)%

              U.S. Treasury Notes 10 yr. Futures (CBOT),           573       strike price $114, expires 2/22/08     (1,665,281 )                       

Put Options–(0.0)%

              U.S. Treasury Notes 10 yr. Futures (CBOT),           573       strike price $110, expires 2/22/08     (8,953 )        Total Options Written (premiums received–$790,746)     (1,674,234 )       

Total Investments net of options written (cost–$550,241,618)–100.0%

  571,937,380  




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 or persons acting at their discretion 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 by using the last sale price on the exchange that is the primary market for such securities, or the last quoted mean 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. Securities purchased on a when-issued or delayed-delivery basis are marked to market daily until settlement at the forward settlement date. 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 normally determined 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) Private Placement — Restricted as to resale and may not have a readily available market. Securities with an aggregate value of $21,518,407, representing 3.8% of total investments. (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) When-issued or delayed-delivery security. To be settled/delivered after January 31, 2008. (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 January 31, 2008. (g) All or partial amount segregated as initial margin on futures contracts. (h) Non-income producing. (i) Residual Interest Bonds held in trust — 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. (j) Security in Default

Glossary:

ACA – insured by American Capital Access Holding Ltd. AMBAC – insured by American Municipal Bond Assurance Corp. CBOT – Chicago Board of Trade CP – Certificates of Participation FGIC – insured by Financial Guaranty Insurance Co. FSA – insured by Financial Security Assurance, Inc. GO – General Obligation Bond GTD – Guaranteed MBIA – insured by Municipal Bond Investors Assurance NR – Not Rated PSF – Public School Fund Q-SBLF – Qualified School Bond Loan Fund Radian – insured by Radian Guaranty, Inc.



Other Investments:

(1) Futures contracts outstanding at January 31, 2008:


Type Contracts Market
Value
(000)
Expiration
Date
Unrealized
Depreciation
Short: U.S. Treasury Bond Futures (406 )  $ (48,440,875 )  3/19/08 $ (691,641 ) 

(2) Transactions in options written for the nine months ended January 31, 2008:


  Contracts/Notional Premiums Options outstanding, April 30, 2007 $ Options written 1,146 790,746 Options outstanding, January 31, 2008 1,146 $ 790,746




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)), 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 significant 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: March 26, 2008

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

Date: March 26, 2008

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: March 26, 2008

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

Date: March 26, 2008