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: (811-02608)

Exact name of registrant as specified in charter: Putnam Money Market Fund

Address of principal executive offices: One Post Office Square, Boston, Massachusetts 02109

Name and address of agent for service: Robert T. Burns, Vice President
One Post Office Square
Boston, Massachusetts 02109

Copy to:         John W. Gerstmayr, Esq.
Ropes & Gray LLP
800 Boylston Street
Boston, Massachusetts 02199-3600

Registrant’s telephone number, including area code: (617) 292-1000

Date of fiscal year end: September 30, 2012

Date of reporting period: December 31, 2011

Item 1. Schedule of Investments:

Putnam Money Market Fund
The fund's portfolio
12/31/11 (Unaudited)
REPURCHASE AGREEMENTS (25.7%)(a)
				Principal amount	Value
Interest in $310,000,000 joint tri-party repurchase agreement dated 12/30/11 with Citigroup Global Markets, Inc. due 1/3/12 - maturity value of $80,000,622 for an effective yield of 0.07% (collateralized by various mortgage backed securities with coupon rates ranging from 3.50% to 5.50% and due dates ranging from 11/1/24 to 1/1/42, valued at $316,200,000)				$80,000,000	$80,000,000
Interest in $35,000,000 joint tri-party repurchase agreement dated 12/30/11 with Deutsche Bank Securities, Inc. due 1/3/12 - maturity value of $16,200,144 for an effective yield of 0.08% (collateralized by a U.S. Treasury notes with a coupon rate of 2.00% and a due date of 11/15/21, valued at $35,700,100)				16,200,000	16,200,000
Interest in $235,000,000 joint tri-party repurchase agreement dated 12/30/11 with Goldman Sach & Co. due 1/3/12 - maturity value of $80,000,889 for an effective yield of 0.10% (collateralized by various mortgage backed securities with coupon rates ranging from 4.00% to 5.50% and due dates ranging from 8/1/25 to 2/1/41, valued at $239,700,000)				80,000,000	80,000,000
Interest in $90,000,000 joint tri-party repurchase agreement dated 12/30/11 with JPMorgan Securities, LLC due 1/3/12 - maturity value of $37,000,576 for an effective yield of 0.14% (collateralized by various corporate bonds and notes with coupon rates ranging from 0.000% to 10.75% and due dates ranging from 4/15/12 to 10/1/40, valued at $94,503,241)				37,000,000	37,000,000
Interest in $325,000,000 joint tri-party repurchase agreement dated 12/30/11 with JPMorgan Securities, LLC due 1/3/12 - maturity value of $80,000,356 for an effective yield of 0.04% (collateralized by various mortgage backed securities with coupon rates ranging from 2.50% to 7.50% and due dates ranging from 1/1/13 to 3/1/51, valued at $331,503,927)				80,000,000	80,000,000
Interest in $332,310,000 joint tri-party repurchase agreement dated 12/30/11 with Merrill Lynch & Co., Inc. due 1/3/12 - maturity value of $80,437,358 for an effective yield of 0.04% (collateralized by various mortgage backed securities with coupon rates ranging from 2.891% to 5.655% and due dates ranging from 7/1/37 to 9/1/41, valued at $338,956,200)				80,437,000	80,437,000
Interest in $314,000,000 joint tri-party term repurchase agreement dated 12/27/11 with Citigoup Global Markets, Inc. due 1/3/12, 0.07% (collateralized by various mortgage-backed securities with coupon rates ranging from 3.00% to 5.00% and due dates ranging from 12/1/26 to 5/1/41, valued at $321,632,624) (TR)				36,250,000	36,250,000
Interest in $264,000,000 joint tri-party term repurchase agreement dated 12/28/11 with Deutsche Bank Securities, Inc. due 1/4/12, 0.05% (collateralized by various mortgage-backed securities with coupon rates ranging from 3.50% to 7.00% and due dates ranging from 6/1/16 to 11/1/41, valued at $269,280,000) (TR)				36,250,000	36,250,000
Interest in $55,000,000 joint tri-party term repurchase agreement dated 12/23/11 with JPMorgan Securities, LLC due 1/23/12, 0.31% (collateralized by various corporate bonds and notes with coupon rates ranging from 4.05% to 7.25% and due dates ranging from 2/15/13 to 10/15/39, valued at $57,753,766) (TR)				14,000,000	14,000,000
Total repurchase agreements (cost $460,137,000)					$460,137,000
ASSET-BACKED COMMERCIAL PAPER (18.9%)(a)
	Yield (%)	Maturity date		Principal amount	Value
Alpine Securitization Corp. (Switzerland)	0.190	1/6/12		$10,600,000	$10,599,720
Bryant Park Funding, LLC	0.180	1/4/12		4,438,000	4,437,933
Bryant Park Funding, LLC	0.170	1/20/12		13,500,000	13,498,789
CAFCO, LLC	0.130	1/6/12		9,500,000	9,499,828
Chariot Funding, LLC	0.230	3/8/12		9,000,000	8,996,148
Chariot Funding, LLC	0.230	2/2/12		9,000,000	8,998,160
CHARTA, LLC	0.140	1/24/12		9,500,000	9,499,150
CIESCO-LP	0.100	1/23/12		9,300,000	9,299,432
CRC Funding, LLC	0.130	1/4/12		9,300,000	9,299,899
Fairway Finance, LLC (Canada)	0.230	1/18/12		3,487,000	3,486,621
Fairway Finance, LLC (Canada)	0.220	3/5/12		10,017,000	10,013,082
Fairway Finance, LLC (Canada)	0.220	1/27/12		5,000,000	4,999,206
Fairway Finance, LLC (Canada)	0.180	2/16/12		1,805,000	1,804,585
Gemini Securitization Corp., LLC	0.090	1/3/12		15,000,000	14,999,925
Govco, LLC	0.160	1/23/12		9,500,000	9,499,071
Jupiter Securitization Co., LLC	0.220	3/6/12		12,000,000	11,995,233
Jupiter Securitization Co., LLC	0.180	2/7/12		6,000,000	5,998,890
Liberty Street Funding, LLC (Canada)	0.270	1/17/12		10,500,000	10,498,740
Liberty Street Funding, LLC (Canada)	0.260	2/13/12		8,000,000	7,997,516
Manhattan Asset Funding Co., LLC (Japan)	0.420	2/21/12		7,500,000	7,495,538
Manhattan Asset Funding Co., LLC (Japan)	0.380	1/25/12		7,900,000	7,897,999
Manhattan Asset Funding Co., LLC (Japan)	0.330	1/17/12		3,000,000	2,999,560
Old Line Funding, LLC	0.220	2/6/12		12,000,000	11,997,360
Old Line Funding, LLC	0.220	1/20/12		3,350,000	3,349,611
Old Line Funding, LLC	0.140	1/13/12		2,800,000	2,799,869
Straight-A Funding, LLC	0.190	3/20/12		18,400,000	18,392,328
Straight-A Funding, LLC	0.190	2/21/12		2,250,000	2,249,394
Straight-A Funding, LLC	0.190	2/1/12		19,555,000	19,551,801
Straight-A Funding, LLC	0.130	2/16/12		5,300,000	5,299,120
Straight-A Funding, LLC	0.090	1/18/12		9,000,000	8,999,618
Thunder Bay Funding, LLC	0.230	2/1/12		9,700,000	9,698,079
Thunder Bay Funding, LLC	0.220	3/19/12		8,500,000	8,495,948
Variable Funding Capital Co., LLC	0.220	1/30/12		16,200,000	16,197,129
Variable Funding Capital Co., LLC	0.130	1/26/12		11,000,000	10,999,007
Victory Receivables Corp. (Japan)	0.385	1/30/12		11,000,000	10,996,588
Victory Receivables Corp. (Japan)	0.225	2/9/12		16,200,000	16,196,099
Working Capital Management Co. (Japan)	0.350	1/5/12		9,300,000	9,299,638
Total asset-backed commercial paper (cost $338,336,614)					$338,336,614
COMMERCIAL PAPER (15.2%)(a)
	Yield (%)	Maturity date		Principal amount	Value
Australia & New Zealand Banking Group, Ltd. (Australia)	0.541	6/29/12		$5,500,000	$5,485,150
Australia & New Zealand Banking Group, Ltd. 144A (Australia)	0.351	2/2/12		21,500,000	21,493,311
Barclays U.S. Funding Corp. (United Kingdom)	0.090	1/3/12		9,400,000	9,399,953
Canadian Imperial Holdings, Inc.	0.401	5/15/12		18,400,000	18,372,400
COFCO Capital Corp.	0.350	1/5/12		9,000,000	8,999,650
Commonwealth Bank of Australia 144A (Australia)	0.481	3/19/12		4,000,000	3,995,840
Commonwealth Bank of Australia 144A (Australia)	0.470	6/8/12		14,000,000	14,000,000
Commonwealth Bank of Australia 144A (Australia)	0.461	4/10/12		10,250,000	10,236,903
Danske Corp. (Denmark)	0.270	1/4/12		9,300,000	9,299,791
DnB Bank ASA 144A (Norway)	0.670	4/25/12		10,600,000	10,600,000
DnB Bank ASA 144A (Norway)	0.531	4/16/12		17,500,000	17,472,690
General Electric Capital Corp.	0.200	3/14/12		9,000,000	8,998,175
General Electric Capital Services	0.230	1/19/12		9,900,000	9,898,862
HSBC USA, Inc. (United Kingdom)	0.521	3/26/12		9,000,000	8,994,475
HSBC USA, Inc. (United Kingdom)	0.270	3/12/12		7,150,000	7,146,193
HSBC USA, Inc.	0.260	2/27/12		11,000,000	10,995,472
ING (US) Funding, LLC	0.170	1/3/12		10,600,000	10,599,900
Louis Dreyfus Commodities, LLC	0.500	1/11/12		9,300,000	9,298,708
Nordea North America, Inc./DE (Sweden)	0.511	4/13/12		10,100,000	10,085,262
Prudential PLC 144A (United Kingdom)	0.470	2/7/12		9,300,000	9,295,508
State Street Corp.	0.200	3/7/12		18,000,000	17,993,400
Svenska Handelsbanken, Inc. (Sweden)	0.501	3/12/12		3,600,000	3,596,450
Toyota Credit Canada, Inc. (Canada)	0.320	3/1/12		6,600,000	6,598,240
Toyota Motor Credit Corp.	0.200	1/31/12		2,000,000	1,999,667
Westpac Banking Corp. 144A (Australia)	0.744	8/24/12		9,300,000	9,254,885
Westpac Banking Corp. 144A (Australia)	0.630	7/5/12		18,000,000	18,000,000
Total commercial paper (cost $272,110,885)					$272,110,885
MUNICIPAL BONDS AND NOTES (15.0%)(a)
	Yield (%)	Maturity date	Rating(RAT)	Principal amount	Value
California (1.5%)
Board of Trustees of the Leland Stanford Junior University Commercial Paper	0.200	1/13/12	P-1	$18,900,000	$18,898,740
Board of Trustees of the Leland Stanford Junior University Commercial Paper	0.180	2/24/12	P-1	8,400,000	8,397,732
					27,296,472
Connecticut (0.8%)
Yale University Commercial Paper	0.193	1/18/12	P-1	7,000,000	6,999,372
Yale University Commercial Paper	0.162	1/17/12	P-1	8,000,000	7,999,431
					14,998,803
Florida (0.7%)
Highlands County Health Facilities Authority VRDN (Adventist Health), Ser. H(M)	0.050	11/15/35	VMIG1	11,750,000	11,750,000
					11,750,000
Indiana (2.1%)
Indiana State Finance Authority VRDN, Ser. A(M)	0.050	2/1/35	VMIG1	9,000,000	9,000,000
Saint Joseph County Commercial Paper (University of Notre Dame du Lac)	0.200	2/15/12	P-1	7,272,000	7,270,182
Saint Joseph County Commercial Paper (University of Notre Dame du Lac)	0.183	1/5/12	P-1	5,000,000	4,999,900
Saint Joseph County Commercial Paper (University of Notre Dame du Lac)	0.150	1/9/12	P-1	8,200,000	8,199,727
Trinity Health Corporation Commercial Paper	0.130	1/23/12	P-1	8,200,000	8,199,349
					37,669,158
Kentucky (1.3%)
Catholic Health Initiatives Commercial Paper, Ser. A	0.180	1/12/12	P-1	4,370,000	4,370,000
Catholic Health Initiatives Commercial Paper, Ser. A	0.100	1/3/12	P-1	7,250,000	7,250,000
Kentucky State Economic Development Finance Authority VRDN (Catholic Health Initiatives), Ser. C(M)	0.060	5/1/34	VMIG1	11,000,000	11,000,000
					22,620,000
Maryland (0.9%)
Howard County Commercial Paper, Ser. 11	0.120	1/17/12	P-1	9,400,000	9,400,000
Johns Hopkins University Commercial Paper, Ser. A	0.090	1/20/12	P-1	6,216,000	6,216,000
					15,616,000
Massachusetts (1.3%)
Harvard University Commercial Paper	0.162	1/17/12	P-1	4,000,000	3,999,716
Harvard University Commercial Paper	0.120	2/15/12	P-1	18,789,000	18,786,182
					22,785,898
Nevada (0.5%)
Truckee Meadows Water Authority Commercial Paper (Lloyds TSB Bank PLC/New York (LOC))	0.120	1/4/12	P-1	9,000,000	9,000,000
					9,000,000
North Carolina (1.0%)
Duke University Commercial Paper, Ser. B-98	0.220	3/22/12	P-1	8,000,000	7,996,040
Duke University Commercial Paper, Ser. B-98	0.180	2/9/12	P-1	8,000,000	7,998,440
Wake County VRDN, Ser. B(M)	0.060	3/1/24	VMIG1	1,500,000	1,500,000
					17,494,480
Texas (4.1%)
Board of Regents of Texas Tech University Revenue Financing System Commercial Paper	0.110	1/3/12	P-1	12,250,000	12,250,000
Board of Regents of Texas Tech University Revenue Financing System Commercial Paper	0.110	1/3/12	P-1	3,500,000	3,500,000
Board of Regents of Texas Tech University Revenue Financing System Commercial Paper, Ser. A	0.110	1/3/12	P-1	11,250,000	11,250,000
Board of Regents of University of Texas System Commercial Paper, Ser. B	0.160	1/18/12	P-1	28,000,000	28,000,000
Harris County, Health Facilities Development Authority VRDN (Texas Childrens Hospital), Ser. B-1(M)	0.100	10/1/29	VMIG1	3,795,000	3,795,000
Texas Public Finance Authority Commercial Paper, Ser. 08	0.160	2/6/12	P-1	15,500,000	15,500,000
					74,295,000
Virginia (0.6%)
Regents of University of Virginia Commercial Paper, Ser. 03-A	0.090	1/18/12	P-1	10,325,000	10,325,000
					10,325,000
Wisconsin (0.2%)
Wisconsin State Health & Educational Facilities Authority VRDN (Wheaton Franciscan Services), Ser. B(M)	0.060	8/15/33	VMIG1	4,100,000	4,100,000
					4,100,000
Total municipal bonds and notes (cost $267,950,811)					$267,950,811
U.S. GOVERNMENT AGENCY OBLIGATIONS (11.0%)(a)
	Yield (%)	Maturity date		Principal amount	Value
Bank of America Corp. FDIC guaranteed notes, MTN, Ser. L(k)	2.100	4/30/12		$39,000,000	$39,243,435
Federal Farm Credit Bank FRN, Ser. 1	0.150	1/14/13		24,300,000	24,300,000
Federal Home Loan Bank unsec. discount notes	0.093	4/20/12		21,500,000	21,493,890
Federal Home Loan Bank unsec. discount notes	0.090	3/28/12		6,200,000	6,198,652
Federal Home Loan Bank unsec. discount notes	0.080	6/1/12		3,590,000	3,588,787
Federal Home Loan Bank unsec. discount notes	0.070	5/30/12		5,000,000	4,998,542
Federal Home Loan Mortgage Corp. unsec. discount notes	0.110	4/2/12		6,307,000	6,305,227
Federal Home Loan Mortgage Corp. unsec. discount notes	0.100	2/10/12		5,000,000	4,999,444
Federal Home Loan Mortgage Corp. unsec. discount notes	0.095	4/9/12		12,000,000	11,996,865
Federal Home Loan Mortgage Corp. unsec. discount notes	0.095	3/12/12		7,800,000	7,798,539
Federal Home Loan Mortgage Corp. unsec. discount notes	0.075	5/21/12		1,100,000	1,099,677
Federal National Mortgage Association unsec. discount notes	0.095	4/18/12		13,462,000	13,458,163
Federal National Mortgage Association unsec. discount notes	0.090	3/21/12		25,800,000	25,794,840
Federal National Mortgage Association unsec. discount notes	0.080	5/16/12		13,350,000	13,345,965
Federal National Mortgage Association unsec. discount notes	0.065	5/9/12		13,000,000	12,996,972
Total U.S. Government Agency Obligations (cost $197,618,998)					$197,618,998
CERTIFICATES OF DEPOSIT (5.2%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
Bank of Montreal/Chicago, IL (Canada)	0.100	1/31/12		$6,500,000	$6,500,000
Bank of Nova Scotia/Houston	0.560	6/21/12		10,500,000	10,500,000
National Australia Bank, Ltd. (Australia)	0.500	4/23/12		18,800,000	18,800,000
National Australia Bank, Ltd. (Australia)	0.490	4/11/12		10,000,000	10,000,280
Nordea Bank Finland PLC/New York FRN	0.942	9/13/12		17,150,000	17,138,240
Toronto-Dominion Bank/NY (Canada)	0.380	5/4/12		10,000,000	10,004,124
Toronto-Dominion Bank/NY FRN (Canada)	0.426	10/19/12		14,500,000	14,500,000
UBS AG/Stamford, CT	0.190	1/9/12		5,000,000	5,000,022
Total certificates of deposit (cost $92,442,666)					$92,442,666
SHORT-TERM INVESTMENT FUND (3.8%)(a)
				Shares	Value
Putnam Money Market Liquidity Fund 0.05%(e)				68,000,000	$68,000,000
Total short-term investment fund (cost $68,000,000)					$68,000,000
CORPORATE BONDS AND NOTES (3.0%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
Royal Bank of Canada 144A sr. unsec. notes FRN (Canada)(M)	0.738	5/15/14		$29,425,000	$29,426,167
Svenska Handelsbanken/New York, NY 144A FRN (Sweden)(M)	0.578	6/8/17		23,500,000	23,500,000
Total corporate bonds and notes (cost $52,926,167)					$52,926,167
U.S. TREASURY OBLIGATIONS (2.5%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
U.S. Treasury Notes	1.500	7/15/12		$25,000,000	$25,188,741
U.S. Treasury Notes	0.625	7/31/12		19,500,000	19,559,316
Total U.S. treasury Obligations (cost $44,748,057)					$44,748,057
TOTAL INVESTMENTS
Total investments (cost $1,794,271,198)(b)					$1,794,271,198

Key to holding's abbreviations
ASC 820	Accounting Standards Codification ASC 820 Fair Value Measurements and Disclosures
FDIC Guaranteed	Federal Deposit Insurance Corp. Guaranteed
FRN	Floating Rate Notes: the rate shown is the current interest rate at the close of the reporting period
LOC	Letter of Credit
MTN	Medium Term Notes
Putnam Management	Putnam Investment Management, LLC, the fund's manager, an indirect wholly-owned subsidiary of Putnam Investments, LLC
VRDN	Variable Rate Demand Notes, which are floating-rate securities with long-term maturities, that carry coupons that reset every one or seven days. The rate shown is the current interest rate at the close of the reporting period.

	Notes to the fund's portfolio
	Unless noted otherwise, the notes to the fund's portfolio are for the close of the fund's reporting period, which ran from October 1, 2011 through December 31, 2011 (the reporting period).
(a)	Percentages indicated are based on net assets of $1,790,211,745.
(RAT)	The Moody's, Standard & Poor's or Fitch ratings indicated are believed to be the most recent ratings available at the close of the reporting period for the securities listed. Ratings are generally ascribed to securities at the time of issuance. While the agencies may from time to time revise such ratings, they undertake no obligation to do so, and the ratings do not necessarily represent what the agencies would ascribe to these securities at the close of the reporting period. The rating of an insured security represents what is believed to be the most recent rating of the insurer's claims-paying ability available at the close of the reporting period and does not reflect any subsequent changes. Security ratings are defined in the Statement of Additional Information.
(b)	The aggregate identified cost on a financial reporting and tax basis is the same.
(e)	The fund invested in Putnam Money Market Liquidity Fund, an open-end management investment company managed by Putnam Management. Investments in Putnam Money Market Liquidity Fund are valued at its closing net asset value each business day. Income distributions earned by the fund are recorded as interest income and totaled $10,966 for the reporting period. During the reporting period, cost of purchases and proceeds of sales of investments in Putnam Money Market Liquidity Fund aggregated $10,000,000 and $39,046,017, respectively. Management fees charged to Putnam Money Market Liquidity Fund have been waived by Putnam Management. The rate quoted in the security description is the annualized 7-day yield of the fund at the close of the reporting period.
(k)	The rates shown are the current interest rates at the close of the reporting period.
(M)	The security's effective maturity date is less than one year.
(TR)	Maturity value of a term repurchase agreement will equal the principal amount of the repurchase agreement plus interest.
	Debt obligations are considered secured unless otherwise indicated.
	144A after the name of an issuer represents securities exempt from registration under Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers.
	The dates shown on debt obligations are the original maturity dates.
	DIVERSIFICATION BY COUNTRY
	Distribution of investments by country of risk at the close of the reporting period, excluding collateral received, if any (as a percentage of Portfolio Value):
	United States	78.1%
	Australia	6.2
	Canada	5.9
	Japan	3.1
	Sweden	2.1
	United Kingdom	1.9
	Norway	1.6
	Switzerland	0.6
	Denmark	0.5
	Total	100.0%
	Security valuation: The valuation of the fund’s portfolio instruments is determined by means of the amortized cost method (which approximates market value) as set forth in Rule 2a-7 under the Investment Company Act of 1940. The amortized cost of an instrument is determined by valuing it at its original cost and thereafter amortizing any discount or premium from its face value at a constant rate until maturity and is generally categorized as a Level 2 security.
	Investments in other open-end investment companies, which are classified as Level 1 securities, are based on their net asset value (NAV). The NAV of an investment company equals the total value of its assets less its liabilities and divided by the number of its outstanding shares. Shares are only valued as of the close of regular trading on the New York Stock Exchange each day that the exchange is open.
	Repurchase agreements: The fund, or any joint trading account, through its custodian, receives delivery of the underlying securities, the market value of which at the time of purchase is required to be in an amount at least equal to the resale price, including accrued interest. Collateral for certain tri-party repurchase agreements is held at the counterparty’s custodian in a segregated account for the benefit of the fund and the counterparty. Putnam Management is responsible for determining that the value of these underlying securities is at all times at least equal to the resale price, including accrued interest. In the event of default or bankruptcy by the other party to the agreement, retention of the collateral may be subject to legal proceedings.

ASC 820 establishes a three-level hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of the fund’s investments. The three levels are defined as follows:
Level 1: Valuations based on quoted prices for identical securities in active markets.
Level 2: Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.
Level 3: Valuations based on inputs that are unobservable and significant to the fair value measurement.
The following is a summary of the inputs used to value the fund’s net assets as of the close of the reporting period:
		Valuation inputs
Investments in securities:	Level 1	Level 2	Level 3
Asset-backed commercial paper	$—	$338,336,614	$—
Certificates of deposit	—	92,442,666	—
Commercial paper	—	272,110,885	—
Corporate bonds and notes	—	52,926,167	—
Municipal bonds and notes	—	267,950,811	—
Repurchase agreements	—	460,137,000	—
Short-term investment fund	68,000,000	—	—
U.S. government agency obligations	—	197,618,998	—
U.S. treasury obligations	—	44,748,057	—
Totals by level	$68,000,000	$1,726,271,198	$—
For additional information regarding the fund please see the fund's most recent annual or semiannual shareholder report filed on the Securities and Exchange Commission's Web site, www.sec.gov, or visit Putnam's Individual Investor Web site at www.putnaminvestments.com

Item 2. Controls and Procedures:

(a) The registrant’s principal executive officer and principal financial officer have concluded, based on their evaluation of the effectiveness of the design and operation of the registrant’s disclosure controls and procedures as of a date within 90 days of the filing date of this report, that the design and operation of such procedures are generally effective to provide reasonable assurance that information required to be disclosed by the registrant in this report is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms.

(b) Changes in internal control over financial reporting: Not applicable

Item 3. Exhibits:

Separate certifications for the principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended, are filed herewith.

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.

Putnam Money Market Fund

By (Signature and Title):

/s/ Janet C. Smith
Janet C. Smith
Principal Accounting Officer
Date: February 28, 2012

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 dates indicated.

By (Signature and Title):

/s/ Jonathan S. Horwitz
Jonathan S. Horwitz
Principal Executive Officer
Date: February 28, 2012

By (Signature and Title):

/s/ Steven D. Krichmar
Steven D. Krichmar
Principal Financial Officer
Date: February 28, 2012