UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
    
FORM N-Q
OMB APPROVAL
OMB Number: 3235-0578
Expires: February 28, 2006
Estimated average burden
hours per response: 20.0

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, 2006

Date of Reporting Period: January 31, 2006

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, 2006 (unaudited)


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

MUNICIPAL BONDS & NOTES–92.2%

 

Alabama–3.6%

$2,500 Birmingham Baptist Medical Centers Special Care Facs. Financing Auth. Rev., 5.875%, 11/15/24, Ser. A Baa1/NR $    2,628,725
9,900 Daphne Special Care Facs. Financing Auth. Rev., zero coupon, 8/15/28, (Pre-refunded @ $100, 8/15/08) (a) Aaa/AAA 8,875,251
8,000 Huntsville Health Care Auth. Rev., 5.75%, 6/1/31, Ser. A A2/NR 8,423,280
      19,927,256
 

Alaska–1.1%

6,000 Northern Tobacco Securitization Corp. Rev., 5.50%, 6/1/29 Baa3/BBB 6,079,560
 

Arizona–1.0%

 
2,000 Apache Cnty. Industrial Dev. Auth., Pollution Control Rev., Tuscon Electric Power Co., 5.875%, 3/1/33, Ser. B Ba1/B+ 2,000,100
3,500 Salt River Project Agricultural Improvement & Power Dist. Rev., 4.75%, 1/1/35, Ser. A Aa2/AA 3,549,630
      5,549,730
 

California–3.8%

10,000 Golden State Tobacco Securitization Corp., Tobacco Settlement Rev., GO, 6.75%, 6/1/39, Ser. 2003-A-1 Baa3/BBB 11,264,200
10,000 Riverside Cnty. Public Financing Auth., Tax Allocation, 4.50%, 10/1/30, Ser. A (XLCA) Aaa/AAA 9,695,000
      20,959,200
 

Colorado–2.3%

  Denver Health & Hospital Auth. Healthcare Rev., Ser. A,    
2,000 5.375%, 12/1/28 Baa3/BBB 2,009,780
1,000 6.00%, 12/1/23 Baa3/BBB 1,065,000
12,400 Health Facs. Auth. Retirement Facs. Rev., zero coupon, 7/15/24 NR/AAA 5,252,888
4,965 Northwest Parkway Public Highway Auth. Rev., 7.125%, 6/15/41,
Ser. D
B3/CCC 4,653,297
      12,980,965
 

Connecticut–0.2%

1,000 State Dev. Auth. Pollution Control Rev., 5.85%, 9/1/28 Baa1/BBB− 1,057,930
 

District of Columbia–1.1%

5,610 Tobacco Settlement Financing Corp. Rev., 6.25%, 5/15/24 Baa3/BBB 5,948,003
 

Florida–1.8%

9,000 Highlands Cnty. Health Facs. Auth. Rev., Adventist Health System, 6.00%, 11/15/31, Ser. A A2/A+ 9,730,440
 

Georgia–2.0%

  Municipal Electric Auth. Power Rev., Ser. Z (MBIA-IBC),
9,700 5.50%, 1/1/20 Aaa/AAA 10,804,248
300 5.50%, 1/1/20, (Pre-refunded @ $100, 1/1/13) (a) NR/AAA 336,408
      11,140,656



PIMCO Municipal Income Fund   Schedule of Investments
January 31, 2006 (unaudited) (continued)



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

Illinois–12.0%

  Chicago, GO, Ser. A (FGIC),    
$2,935 5.375%, 1/1/34 Aaa/AAA $    3,088,295
6,145 5.375%, 1/1/34, (Pre-refunded @ $101, 1/1/09) (a) Aaa/AAA 6,541,230
10,115 Chicago Board of Education, GO, zero coupon, 12/1/31, Ser. A (FGIC) Aaa/AAA 2,882,573
2,000 Chicago Water Rev., 5.25%, 11/1/27, (Pre-refunded @ $102, 11/1/07) (FGIC) (a) Aaa/AAA 2,106,060
1,115 Educational Facs. Auth. Rev.,
  Midwestern Univ., 5.50%, 5/15/18, Ser. B NR/A− 1,155,318
  Univ. of Chicago,    
190 5.25%, 7/1/41 Aa1/AA 199,796
4,810 5.25%, 7/1/41, (Pre-refunded @ $101, 7/1/11) (a) Aa1/AA 5,244,213
  Finance Auth. Rev. (a),    
5,000 5.50%, 11/15/29, (Pre-refunded @ $101, 11/15/09) A2/A+ 5,396,900
1,260 5.65%, 11/15/24, (Pre-refunded @ $101, 11/15/09) A2/A+ 1,366,659
  Health Facs. Auth. Rev.,    
3,000 Decatur Memorial Hospital, 5.75%, 10/1/24 A2/A 3,139,590
5,425 Silver Cross Hospital, 5.50%, 8/15/25, (Pre-refunded @ $101,
8/15/09) (a)
NR/A 5,841,857
  Lake Cnty. Community High School Dist., GO, Ser. B (FGIC),    
5,000 zero coupon, 2/1/19 Aaa/AAA 2,840,200
5,000 zero coupon, 2/1/20 Aaa/AAA 2,700,700
5,690 zero coupon, 2/1/22 Aaa/AAA 2,775,070
7,345 Regional Transportation Auth. Rev., 5.50%, 6/1/23, Ser. B (FGIC) Aaa/AAA 8,531,438
3,000 State Sales Tax Rev., 5.125%, 6/15/20, Ser. 1 Aa3/AAA 3,177,750
5,000 Univ. Rev., 5.25%, 4/1/32, Ser. B (FGIC) Aaa/AAA 5,205,750
4,000 Winnebago-Boone ETC Cntys., Rock Valley Community College Dist. No 511, GO, 5.30%, 10/1/18, (Pre-refunded @ $100, 10/1/10) (FGIC) (a) Aaa/NR 4,222,400
    66,415,799
 

Indiana–1.8%

   
6,500 Carmel School Building Corp. Rev., 5.00%, 7/15/22 (MBIA) Aaa/AAA 6,776,055
1,225 Richland-Bean Blossom School Building Corp. Rev., 5.00%, 1/15/22 (FGIC) Aaa/AA− 1,269,860
1,825 Zionsville Community Schools Building Corp. Rev., 5.00%, 7/15/27, Ser. A (FSA) NR/AAA 1,893,145
    9,939,060
 

Kansas–3.7%

   
  Wichita Hospital Rev.,    
5,000 5.625%, 11/15/31, Ser. III NR/A+ 5,280,450
14,370 6.25%, 11/15/24, Ser. XI NR/A+ 15,512,271
    20,792,721



PIMCO Municipal Income Fund   Schedule of Investments
January 31, 2006 (unaudited) (continued)



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

Kentucky–0.7%

$3,680 Economic Dev. Finance Auth. Hospital Facs. Rev., St. Luke's Hospital, 6.00%, 10/1/19 A3/A $    4,130,542
 

Louisiana–6.3%

4,905 Local Gov't Environmental Facs., Community Dev. Auth. Rev., 6.55%, 9/1/25 (ACA) NR/A 5,454,605
27,895 Tobacco Settlement Financing Corp. Rev., 5.875%, 5/15/39,
Ser. 2001-B
Baa3/BBB 29,440,941
    34,895,546
 

Maryland–0.2%

1,150 Baltimore Water Project Rev., 5.125%, 7/1/42, Ser. A (FGIC) Aaa/AAA 1,194,792
 

Massachusetts–1.9%

   
9,000 Commonwealth of Massachusetts Rev., 5.50%, 1/1/34 (FGIC) Aaa/AAA 10,539,270
 

Michigan–4.4%

   
  Detroit, GO, Ser. A-1 (MBIA),    
1,000 5.375%, 4/1/15 Aaa/AAA 1,080,550
1,000 5.375%, 4/1/17 Aaa/AAA 1,077,910
5,650 Forest Hills Public Schools, GO, 5.25%, 5/1/18, (Pre-refunded @ $100, 5/1/10) (a) Aa2/NR 6,041,150
3,000 Mount Clemens Community School Dist., GO, 5.00%, 5/1/31 Aa2/AA 3,081,090
50 Royal Oak Hospital Finance Auth. Rev., William Beaumont Hospital, 5.25%, 11/15/35, Ser. M (MBIA) Aaa/AAA 51,630
4,000 State Hospital Finance Auth. Rev., Detroit Medical Center,
6.25%, 8/15/13
Ba3/BB− 4,010,880
2,000 State Strategic Fund Ltd. Obligation Rev., Detrot Edison Pollution Control Co., 5.45%, 9/1/29 A3/BBB+ 2,090,720
3,000 Taylor Tax Increment Finance Auth., 5.375%, 5/1/17, (FSA) Aaa/AAA 3,225,540
6,255 Wayne Charter Cnty. Airport Fac. Rev., 6.75%, 12/1/15 (c) NR/NR 3,482,659
    24,142,129
 

Minnesota–0.6%

  Agricultural & Economic Dev. Board Rev., Health Care System,    
95 6.375%, 11/15/29 A2/A 105,557
2,905 6.375%, 11/15/29, (Pre-refunded @ $101, 11/15/10) (a) A2/A 3,292,963
    3,398,520
 

Missouri–0.5%

   
2,500 Interstate 470 & 350 Transportation Dev. Dist. Rev., 6.35%, 5/1/22 NR/NR 2,550,900
 

Nevada–1.4%

   
3,000 Clark Cnty. Rev., 5.25%, 7/1/34, Ser. B (Pre-refunded @ $100, 7/1/11) (FGIC) (a) Aaa/AAA 3,253,590
4,250 Truckee Meadows Water Auth. Rev., 5.25%, 7/1/34, Ser. A (FSA) Aaa/AAA 4,424,165
    7,677,755



PIMCO Municipal Income Fund   Schedule of Investments
January 31, 2006 (unaudited) (continued)



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

New Hampshire–0.6%

   
$3,000 State Business Finance Auth. Pollution Control Rev., Conn. Light & Power Co., 5.85%, 12/1/22 Baa1/BBB− $    3,185,550
 

New Jersey–4.0%

   
  Camden Cnty. Improvement Auth. Rev., Cooper Health System,    
240 5.60%, 2/15/07 Baa3/BBB 241,068
875 6.00%, 2/15/27, Ser. A (Pre-refunded @ $102, 2/15/07) (a) Baa3/BBB 915,530
16,550 Economic Dev. Auth., Kapkowski Landfill Project, 5.75%, 4/1/31 Baa3/NR 17,858,774
  Economic Dev. Auth. Rev., Arbor Glen,    
2,510 5.875%, 5/15/16 NR/NR 2,547,826
490 5.875%, 5/15/16, Ser. A (Pre-refunded @ $102, 5/15/09) (a) NR/NR 535,158
    22,098,356
 

New Mexico–0.5%

2,500 Farmington Pollution Control Rev., 5.80%, 4/1/22 Baa2/BBB 2,529,325
 

New York–1.1%

   
3,000 New York City Municipal Water Finance Auth., Water & Sewer System Rev., 5.00%, 6/15/39, Ser. A Aa2/AA+ 3,086,580
2,875 Westchester Cnty. Healthcare Corp. Rev., 5.875%, 11/1/25, Ser. A Ba2/B 2,874,684
    5,961,264
 

North Carolina–0.6%

   
3,000 Capital Facs. Finance Agcy. Rev., Duke Univ. Project, 5.125%, 10/1/41, Ser. A Aa1/AA+ 3,098,670
 

Ohio–1.2%

   
  Lorain Cnty. Hospital Rev., Catholic Healthcare Partners,    
2,500 5.625%, 10/1/17 Aa3/AA− 2,697,450
2,565 5.75%, 10/1/18 Aa3/AA− 2,779,537
1,235 State Turnpike Commission Rev., 5.50%, 2/15/15 Aa3/AA 1,329,761
    6,806,748
 

Pennsylvania–4.2%

   
  Allegheny Cnty.,
5,780 Hospital Dev. Auth. Rev., 9.25%, 11/15/30, Ser. B Ba3/B+ 6,827,567
1,000 Industrial Dev. Auth. Rev., USX Corp., 5.60%, 9/1/30 Baa1/BBB+ 1,037,130
1,095 Port Auth. Rev., 5.25%, 3/1/20 (FGIC) Aaa/AAA 1,168,858
2,575 Delaware Cnty. Auth. College Rev., Neumann College, 5.80%, 10/1/17 NR/BBB− 2,718,093
4,610 Philadelphia Hospitals & Higher Education Facs. Hospital Rev.,
Temple Univ. Hospital, 6.625%, 11/15/23, Ser. A
Baa2/BBB 4,655,132
6,200 State Higher Educational Facs. Auth. Rev., UPMC Health System, 6.00%, 1/15/31, Ser. A Aa3/A+ 6,764,758
    23,171,538
 

Puerto Rico–0.3%

1,600 Electric Power Auth., Power Rev., 5.125%, 7/1/29, Ser. NN A3/A− 1,656,240



PIMCO Municipal Income Fund   Schedule of Investments
January 31, 2006 (unaudited) (continued)



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

Rhode Island–3.4%

   
$18,000 Tobacco Settlement Financing Corp. Rev., 6.25%, 6/1/42, Ser. A Baa3/BBB $  18,809,280
 

South Carolina–4.7%

   
  Greenwood Cnty. Hospital Rev., Self Memorial Hospital,    
3,500 5.50%, 10/1/21 A2/A 3,641,050
2,000 5.50%, 10/1/26 A2/A 2,081,600
3,000 Jobs Economic Dev. Auth. Hospital Facs. Rev., Georgetown Memorial Hospital, 5.375%, 2/1/30 (Radian) NR/AA 3,129,480
15,600 Tobacco Settlement Rev., Management Auth. Rev., 6.375%,
5/15/30, Ser. B
Baa3/BBB 17,393,064
    26,245,194
 

Tennessee–1.6%

   
9,320 Memphis Health Educational & Housing Fac., Wesley Housing Corp. Project, 6.95%, 1/1/20 (d) NR/NR 8,956,287
 

Texas–12.1%

   
1,750 Austin Convention Enterprises, Inc., 5.75%, 1/1/32, Ser. B A3/NR 1,816,465
4,000 Austin Rev., 5.25%, 5/15/31, Ser. A & B (FSA) Aaa/AAA 4,152,720
2,935 Bell Cnty. Health Fac. Dev. Corp., Buckner Retirement Fac.,
5.25%, 11/15/19
NR/A− 2,990,618
10,000 Coppell Independent School Dist., GO, zero coupon, 8/15/29 (PSF-GTD) NR/AAA 3,193,300
  Corpus Christi Refinance & Improvement, GO (FSA),    
1,125 5.375%, 3/1/18 Aaa/AAA 1,209,319
1,740 5.375%, 3/1/18, (Pre-refunded @ $100, 3/1/11) (a) Aaa/AAA 1,888,840
3,680 Duncanville Independent School Dist., GO, 5.25%, 2/15/32,
Ser. B (PSF-GTD)
Aaa/AAA 3,862,013
  Harris Cnty. Health Facs. Dev. Corp. Rev. (a),    
5,000 Christus Health, 5.375%, 7/1/29, Ser. A (Pre-refunded @
$101, 7/1/09) (MBIA)
Aaa/AAA 5,366,600
7,000 Memorial Hermann Healthcare, 6.375%, 6/1/29, (Pre-refunded @ $101, 6/1/11) A2/A 8,002,540
1,840 Houston, CP, 6.25%, 12/15/12, Ser. J (AMBAC) Aaa/AAA 2,116,110
2,000 Mansfield Independent School Dist., GO, 5.25%, 2/15/23 (PSF-GTD) Aaa/AAA 2,115,720
4,380 Southlake Park Dev. Corp. Rev., 5.60%, 8/15/31, (Pre-refunded @ $100, 2/15/11) (AMBAC) (a) Aaa/AAA 4,653,487
4,530 State, GO, 5.30%, 8/1/18, Ser. A Aa1/AA 4,839,172
19,990 State Turnpike Auth. Rev., zero coupon, 8/15/25, Ser. A (AMBAC) Aaa/AAA 8,128,934
4,920 Univ. of Texas, 5.00%, 7/1/26, Ser. B Aaa/AAA 5,160,736
7,450 Water Dev. Board Rev., 5.125%, 7/15/18 Aaa/AAA 7,566,890
    67,063,464
 

Utah–1.3%

   
7,000 Salt Lake Cnty. Hospital Rev., IHC Health Services, 5.125%, 2/15/33 (AMBAC) Aaa/AAA 7,236,250



PIMCO Municipal Income Fund   Schedule of Investments
January 31, 2006 (unaudited) (continued)



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

Washington–2.3%

   
  Cowlitz Cnty. School Dist. No 458 Kelso, GO (FSA),    
$     910 5.625%, 12/1/14 NR/NR $1,007,561
985 5.625%, 12/1/14, (Pre-refunded @ $100, 12/1/11) (a) NR/NR 1,091,144
1,225 5.625%, 12/1/16, (Pre-refunded @ $100, 12/1/11) (a) Aaa/NR 1,357,006
3,415 Kent, GO, 5.375%, 12/1/20 (MBIA) NR/NR 3,684,751
5,420 King Cnty. School Dist. No. 1 Seattle, GO, 5.25%, 12/1/21, Ser. A (MBIA) Aaa/AAA 5,768,777
    12,909,239
 

Wisconsin–3.9%

   
  Badger Tobacco Asset Securitization Corp.,    
5,000 5.75%, 6/1/12 Baa3/BBB 5,303,800
9,785 6.00%, 6/1/17 Baa3/BBB 10,293,135
3,515 State, GO, 5.00%, 5/1/22, Ser. A (FGIC) Aaa/AAA 3,693,457
2,230 State Health & Educational Facs. Auth. Rev., Kenosha Hospital & Medical Center, 5.625%, 5/15/29 NR/A 2,285,549
    21,575,941
  Total Municipal Bonds & Notes (cost–$481,968,982)   510,354,120

VARIABLE RATE NOTES (b)(e)(f)–4.8%

 

Hawaii–0.3%

1,388 City & Cnty. Of Honolulu Rev., 11.84%, 7/1/23, Ser. 400 (FGIC) Aaa/NR 1,721,208
 

Illinois–1.2%

2,902 Cook Cnty., GO, 11.92%, 11/15/28, Ser. 458 (FGIC) Aaa/NR 3,406,113
2,765 Educational Facs. Auth. Rev., 10.504%, 7/1/38 NR/AA 3,108,910
      6,515,023
 

Massachusetts–0.5%

2,000 State Health & Educational Facs. Auth. Rev., 13.688%, 7/1/32 NR/NR 2,842,900
 

Nevada–0.5%

2,440 Washoe Cnty., GO, 11.939%, 1/1/35, Ser. 1241 (MBIA) Aaa/AAA 2,912,530
 

New York–0.6%

2,600 New York City Municipal Water Finance Auth. Rev., 9.845%, 6/15/26 NR/AA+ 3,119,740
224 New York City Municipal Water Finance Auth., Water & Sewer System Rev., 11.99%, 6/15/37, Ser. 1226 Aa2/NR 261,162
      3,380,902
  Texas–1.3%    
  Harris Cnty. Health Facs. Dev. Corp. Rev.,    
1,720 11.653%, 2/15/26 NR/AA− 2,466,308
3,595 13.80%, 7/1/29, Ser. 357 (MBIA) Aaa/NR 4,912,927
      7,379,235



PIMCO Municipal Income Fund   Schedule of Investments
January 31, 2006 (unaudited) (concluded)



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

Washington–0.4%

$  1,800 Seattle, GO, 12.51%, 12/15/28, Ser. 348 Aa1/NR $    2,005,110
  Total Variable Rate Notes (cost–$20,849,056)   26,756,908

VARIABLE RATE DEMAND NOTES (f)(g)–2.6%

 

Alaska–1.7%

  Valdez Rev.,    
9,100 2.97%, 2/1/06 VMIG1/A-1+ 9,100,000
200 3.00%, 2/1/06 VMIG1/A-1+ 200,000
      9,300,000
 

California–0.1%

220 State of California, Daily Kindergarten Univ., GO, 3.07%, 2/1/06 VMIG1/A-1+ 220,000
 

Indiana–0.0%

   
100 Indiana Health Fac. Financing Auth. Rev., 3.09%, 2/1/06 VMIG1/A-1 100,000
 

Michigan–0.7%

4,065 Univ. of Michigan Rev., 3.07%, 2/1/06, Ser. A VMIG1/A-1+ 4,065,000
 

New York–0.1%

600 New York City Transitional Finance Auth., 3.04%, 2/1/06, Ser. 1 VMIG1/A-1+ 600,000
  Total Variable Rate Demand Notes (cost–$14,285,000)   14,285,000

U.S. TREASURY BILLS (h)–0.4%

2,275 3.82%-3.90%, 3/2/06-3/16/06 (cost–$2,265,067)   2,265,066
 

Total Investments before options written (cost–$519,368,105)–100.0%

  553,661,094

OPTIONS WRITTEN (i)–(0.0)%

Contracts
 

Call Options–(0.0)%

  U.S. Treasury Notes 10 yr. Futures, Chicago Board of Trade,    
158 strike price $110, expires 2/24/06   (9,875)
741 strike price $111, expires 2/24/06   (11,578)
      (21,453)
 

Put Options–(0.0)%

  U.S. Treasury Notes 10 yr. Futures, Chicago Board of Trade,    
158 strike price $106, expires 2/24/06   (4,937)
741 strike price $107, expires 2/24/06   (81,047)
      (85,984)
  Total Options Written (premiums received–$600,601)   (107,437)
 

Total Investments net of options written (cost–$518,767,504)–100.0%

  $553,553,657



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 may be 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 uses 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 on each day the exchange is open for business.
(a)  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.
(b)   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.
(c)   Security in default.
(d)   Fair-valued security.
(e)   Residual Interest Municipal Bonds ("RIBS")/Residual Interest/Tax Exempt Bonds ("RITES") – 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, 2006.
(g)   Maturity date shown is date of next put.
(h)   All or partial amount segregated as initial margin on futures contracts.
(i)   Non-income producing.

Glossary:

ACA – insured by American Capital Access Holding Ltd.

AMBAC – insured by American Municipal Bond Assurance Corp.

CP – Certificates of Participation

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 January 31, 2006:

Type Notional
Amount
(000)
Expiration
Date
Unrealized
Appreciation
Long: U.S. Treasury Bonds, March 2006 $ 45,700     3/22/06   $ 119,875  
Short: U.S. Treasury Notes 10 yr. Futures, March 2006   39,700     3/22/06     23,250  
  U.S. Treasury Notes 5 yr. Futures, March 2006   (144,600   3/22/06     1,061,906  
                $ 1,205,031  
(2)   Transactions in options written for the period ended January 31, 2006:

  Contracts Premiums
Options outstanding, April 30, 2005   2,580   $ 2,313,121  
Options written   9,042     4,492,641  
Options expired   (4,212   (1,996,159
Options terminated in closing transactions   (5,612   (4,209,002
Options outstanding, January 31, 2006   1,798   $ 600,601  



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 Investment Company Act of 1940, 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 significant changes in the registrant's internal controls or in factors that could affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

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 24, 2006

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

Date: March 24, 2006

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 24, 2006

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

Date: March 24, 2006




Exhibit 99.302 Cert.

CERTIFICATIONS

I, Brian S. Shlissel, certify that:

1.  I have reviewed this report Form N-Q of PIMCO Municipal Income Fund;
2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by the report;
3.  Based on my knowledge, the schedules on investments included in this report fairly present in all material respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;
4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:
a.  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b.  Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles:
c.  Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report, based on such evaluation; and
d.  Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.  The registrant’s other certifying officer(s) and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a.  All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and
b.  Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s control over financial reporting.

Date: March 24, 2006
Signature & Title: /s/ Brian S. Shlissel
Brian S. Shlissel, President & Chief Executive Officer




I, Lawrence G. Altadonna, certify that:

1.  I have reviewed this report Form N-Q of PIMCO Municipal Income Fund;
2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by the report;
3.  Based on my knowledge, the schedules on investments included in this report fairly present in all material respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;
4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:
a.  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b.   Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles:
c.  Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report, based on such evaluation; and
d.  Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.  The registrant’s other certifying officer(s) and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a.  All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and
b.  Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s control over financial reporting.

Date: March 24, 2006
Signature & Title: /s/ Lawrence G. Altadonna
Lawrence G. Altadonna, Treasurer, Principal Financial & Accounting Officer