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:         Bryan Chegwidden, Esq.
Ropes & Gray LLP
1211 Avenue of the Americas
New York, New York 10036

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

Date of fiscal year end: September 30, 2014

Date of reporting period: June 30, 2014

Item 1. Schedule of Investments:

Putnam Money Market Fund
The fund's portfolio
6/30/14 (Unaudited)
COMMERCIAL PAPER (29.4%)(a)
	Yield (%)	Maturity date		Principal amount	Value
American Honda Finance Corp.	0.110	7/7/14		$5,800,000	$5,799,894
American Honda Finance Corp.	0.100	8/21/14		7,300,000	7,298,966
Australia & New Zealand Banking Group, Ltd. 144A (Australia)	0.222	2/25/15		2,000,000	2,000,000
Australia & New Zealand Banking Group, Ltd. 144A (Australia)	0.221	9/5/14		17,500,000	17,500,000
Bank of America, NA, Ser. GLOB	0.170	7/21/14		11,500,000	11,500,255
BMW US Capital, LLC	0.100	7/14/14		6,500,000	6,499,765
BPCE SA (France)	0.200	8/1/14		6,625,000	6,623,859
Chevron Corp.	0.110	9/17/14		13,025,000	13,021,896
Coca-Cola Co. (The)	0.200	7/21/14		10,500,000	10,498,833
Coca-Cola Co. (The) 144A	0.150	9/9/14		9,500,000	9,497,229
COFCO Capital Corp. (Rabobank Nederland/NY (LOC))	0.180	7/15/14		8,600,000	8,599,398
Commonwealth Bank of Australia 144A (Australia)	0.221	12/5/14		10,775,000	10,775,000
Commonwealth Bank of Australia 144A (Australia)	0.181	10/1/14		9,300,000	9,300,000
DnB Bank ASA 144A (Norway)	0.230	10/7/14		12,075,000	12,067,440
DnB Bank ASA 144A (Norway)	0.140	8/4/14		8,200,000	8,198,296
Export Development Canada (Canada)	0.140	8/5/14		7,450,000	7,448,986
General Electric Capital Corp.	0.180	12/15/14		19,000,000	18,984,135
HSBC Bank PLC 144A (United Kingdom)	0.234	10/3/14		3,925,000	3,925,000
HSBC USA, Inc. (United Kingdom)	0.261	9/12/14		11,850,000	11,843,752
HSBC USA, Inc. (United Kingdom)	0.240	10/6/14		4,575,000	4,572,042
Mitsubishi UFJ Trust & Banking Corp./NY 144A	0.230	10/10/14		7,400,000	7,395,225
Nestle Capital Corp.	0.170	7/8/14		10,500,000	10,499,653
Nordea Bank AB (Sweden)	0.230	10/6/14		1,750,000	1,748,915
Nordea Bank AB 144A (Sweden)	0.210	9/9/14		10,000,000	9,995,917
Procter & Gamble Co. (The)	0.150	10/27/14		9,375,000	9,370,391
Procter & Gamble Co. (The) 144A	0.100	9/16/14		10,000,000	9,997,433
Prudential PLC (United Kingdom)	0.150	7/30/14		13,125,000	13,123,414
Rabobank USA Financial Corp. (Netherlands)	0.160	7/10/14		4,250,000	4,249,830
Roche Holdings, Inc. 144A (Switzerland)	0.100	8/5/14		19,025,000	19,023,150
Skandinaviska Enskilda Banken AB (Sweden)	0.185	8/5/14		9,700,000	9,698,255
Skandinaviska Enskilda Banken AB (Sweden)	0.160	7/14/14		3,250,000	3,249,812
Standard Chartered Bank/New York 144A	0.190	8/7/14		8,500,000	8,498,340
Standard Chartered Bank/New York 144A	0.190	7/3/14		5,000,000	4,999,947
State Street Corp.	0.180	12/1/14		11,500,000	11,491,203
State Street Corp.	0.150	11/6/14		7,700,000	7,695,893
Sumitomo Mitsui Banking Corp. (Japan)	0.170	7/22/14		13,404,000	13,402,671
Svenska Handelsbanken, Inc. (Sweden)	0.200	10/22/14		2,000,000	1,998,744
Swedbank AB (Sweden)	0.175	9/19/14		13,000,000	12,994,944
Toyota Motor Credit Corp.	0.200	9/8/14		13,975,000	13,969,643
Toyota Motor Credit Corp.	0.190	12/1/14		5,325,000	5,320,700
Westpac Banking Corp. 144A (Australia)	0.215	9/19/14		2,925,000	2,925,000
Westpac Banking Corp. 144A (Australia)	0.201	8/7/14		8,750,000	8,750,009
Total commercial paper (cost $376,353,835)					$376,353,835
REPURCHASE AGREEMENTS (26.5%)(a)
				Principal amount	Value
Interest in $357,933,000 joint tri-party repurchase agreement dated 6/30/14 with Citigroup Global Markets, Inc./Salomon Brothers due 7/1/14 - maturity value of $113,553,315 for an effective yield of 0.10% (collateralized by a mortgage backed security and various U.S. Treasury notes and bonds with coupon rates ranging from 0.125% to 5.500% and due dates ranging from 6/30/15 to 2/15/44, valued at $365,091,754)				$113,553,000	$113,553,000
Interest in $249,954,000 joint tri-party repurchase agreement dated 6/30/14 with Merrill Lynch, Pierce, Fenner and Smith Inc. due 7/1/14 - maturity value of $113,000,314 for an effective yield of 0.10% (collateralized by a mortgage backed security with a coupon rate of 4.000% and a due date of 6/1/42, valued at $254,953,081)				113,000,000	113,000,000
Interest in $200,000,000 joint tri-party repurchase agreement dated 6/30/14 with RBC Capital Markets, LLC due 7/1/14 - maturity value of $113,000,283 for an effective yield of 0.09% (collateralized by various mortgage backed securities with coupon rates ranging from 2.500% to 5.000% and due dates ranging from 1/1/28 to 3/1/44, valued at $204,000,510)				113,000,000	113,000,000
Total repurchase agreements (cost $339,553,000)					$339,553,000
MUNICIPAL BONDS AND NOTES (11.7%)(a)
	Yield (%)	Maturity date	Rating(RAT)	Principal amount	Value
Illinois (1.5%)
University of Chicago Commercial Paper, Ser. A	0.132	10/6/14	P-1	$10,900,000	$10,895,597
University of Chicago Commercial Paper, Ser. A	0.130	9/8/14	P-1	7,725,000	7,723,075
					18,618,672
Indiana (0.8%)
Saint Joseph County (University of Notre Dame Du Lac) Commercial Paper	0.162	8/6/14	P-1	10,000,000	9,998,400
					9,998,400
Maryland (1.5%)
Johns Hopkins University Commercial Paper, Ser. A	0.090	8/7/14	P-1	2,000,000	1,999,930
Johns Hopkins University Commercial Paper, Ser. C	0.130	9/17/14	P-1	3,500,000	3,500,000
Johns Hopkins University Commercial Paper, Ser. C	0.130	9/17/14	P-1	3,487,000	3,487,000
Johns Hopkins University Commercial Paper, Ser. C	0.130	9/10/14	P-1	6,000,000	6,000,000
Johns Hopkins University Commercial Paper, Ser. C	0.120	9/9/14	P-1	4,875,000	4,875,000
					19,861,930
Massachusetts (1.5%)
President and Fellows of Harvard College Commercial Paper	0.160	12/8/14	P-1	14,958,000	14,947,363
President and Fellows of Harvard College Commercial Paper	0.140	9/8/14	P-1	3,754,000	3,752,993
					18,700,356
Michigan (1.0%)
Trinity Health Corporation Commercial Paper	0.124	9/10/14	P-1	12,775,000	12,771,805
					12,771,805
New York (0.5%)
Trustees of Columbia University in the City of New York Commercial Paper	0.120	9/25/14	P-1	6,350,000	6,350,000
					6,350,000
North Carolina (1.5%)
Duke University Commercial Paper, Ser. B-98	0.110	8/12/14	P-1	19,425,000	19,422,507
					19,422,507
Texas (3.2%)
Board of Regents of Texas Tech University Revenue Financing System Commercial Paper, Ser. A	0.150	9/10/14	P-1	11,450,000	11,450,000
Board of Regents of Texas Tech University Revenue Financing System Commercial Paper, Ser. A	0.090	8/6/14	P-1	3,025,000	3,024,972
Board of Regents of The Texas A&M University Revenue Financing System Commercial Paper, Ser. B	0.130	8/4/14	P-1	9,500,000	9,500,000
Harris County Health Facilities Development Authority VRDN (Texas Childrens Hospital), Ser. B-1(M)	0.050	10/1/29	VMIG1	3,530,000	3,530,000
University of Texas System Board of Regents Revenue Financing System Commercial Paper, Ser. A	0.090	7/7/14	P-1	13,937,000	13,937,000
					41,441,972
Virginia (0.2%)
Regents of University of Virginia Commercial Paper, Ser. 03-A	0.090	8/7/14	P-1	3,000,000	2,999,894
					2,999,894
Total municipal bonds and notes (cost $150,165,536)					$150,165,536
ASSET-BACKED COMMERCIAL PAPER (10.2%)(a)
	Yield (%)	Maturity date		Principal amount	Value
Bedford Row Funding Corp.	0.321	9/25/14		$2,025,000	$2,023,452
Chariot Funding, LLC	0.170	10/9/14		3,300,000	3,298,442
Chariot Funding, LLC	0.170	8/27/14		6,200,000	6,198,331
Chariot Funding, LLC	0.130	8/28/14		5,350,000	5,348,847
Fairway Finance, LLC 144A FRN (Canada)	0.172	10/6/14		9,350,000	9,350,000
Gemini Securitization Corp., LLC	0.210	7/14/14		6,425,000	6,424,513
Jupiter Securitization Co., LLC	0.180	7/1/14		2,925,000	2,925,000
Jupiter Securitization Co., LLC	0.158	8/22/14		7,490,000	7,488,294
Jupiter Securitization Co., LLC	0.100	7/7/14		2,850,000	2,849,953
Liberty Street Funding, LLC (Canada)	0.170	7/7/14		2,425,000	2,424,931
Manhattan Asset Funding Co., LLC (Japan)	0.170	7/28/14		3,500,000	3,499,554
MetLife Short Term Funding, LLC	0.180	9/15/14		20,000,000	19,992,400
Old Line Funding, LLC 144A	0.182	8/6/14		21,250,000	21,250,000
Regency Markets No. 1, LLC	0.140	7/14/14		3,250,000	3,249,836
Regency Markets No. 1, LLC 144A	0.140	7/15/14		8,550,000	8,549,535
Thunder Bay Funding, LLC	0.170	8/12/14		3,250,000	3,249,355
Thunder Bay Funding, LLC 144A	0.190	8/25/14		16,400,000	16,395,239
Working Capital Management Co. (Japan)	0.140	7/14/14		6,450,000	6,449,674
Total asset-backed commercial paper (cost $130,967,356)					$130,967,356
CERTIFICATES OF DEPOSIT (9.0%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
Bank of Nova Scotia/Houston FRN	0.221	9/4/14		$17,500,000	$17,500,000
Bank of Tokyo-Mitsubishi UFJ, Ltd. (The) (Japan)	0.245	11/10/14		12,200,000	12,189,054
Canadian Imperial Bank of Commerce/New York, NY FRN	0.363	8/11/14		5,350,000	5,350,977
Canadian Imperial Bank of Commerce/New York, NY FRN	0.224	6/17/15		13,750,000	13,750,000
JPMorgan Chase Bank	0.420	8/11/14		2,500,000	2,500,767
National Australia Bank, Ltd. FRN (Australia)	0.217	2/26/15		10,300,000	10,300,000
Sumitomo Mitsui Banking Corp./New York (Japan)	0.250	10/22/14		1,450,000	1,450,000
Svenska Handelsbanken/New York, NY (Sweden)	0.175	9/8/14		2,105,000	2,105,000
Svenska Handelsbanken/New York, NY FRN (Sweden)	0.401	12/19/14		14,825,000	14,837,490
Toronto-Dominion Bank/NY (Canada)	0.600	3/3/15		1,000,000	1,002,369
Toronto-Dominion Bank/NY FRN (Canada)	0.214	11/18/14		13,500,000	13,500,000
U.S. Bank, NA/Cincinnati, OH	0.140	9/2/14		12,000,000	12,000,000
Westpac Banking Corp./NY FRN (Australia)	0.258	7/18/14		9,500,000	9,500,000
Total certificates of deposit (cost $115,985,657)					$115,985,657
MUTUAL FUNDS (4.0%)(a)
				Shares	Value
Putnam Money Market Liquidity Fund 0.07%(AFF)				51,735,503	$51,735,503
Total mutual funds (cost $51,735,503)					$51,735,503
CORPORATE BONDS AND NOTES (3.5%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
Bank of New York Mellon Corp. (The) sr. unsec. unsub. notes FRN, Ser. MTN	1.077	11/24/14		$3,500,000	$3,512,960
National Australia Bank, Ltd. 144A sr. unsec. notes FRN (Australia)	0.528	1/22/15		9,500,000	9,516,874
Nordea Bank AB 144A sr. unsec. unsub. notes, Ser. 2 (Sweden)	3.700	11/13/14		7,050,000	7,138,479
Toronto-Dominion Bank (The) sr. unsec. notes FRN, Ser. MTN (Canada)	0.403	5/1/15		2,883,000	2,887,395
U.S. Bank, NA/Cincinnati, OH unsec. sub. notes FRN, Ser. BKNT	0.507	10/14/14		7,300,000	7,305,618
Wells Fargo & Co. sr. unsec. notes FRN	1.154	6/26/15		4,107,000	4,141,539
Wells Fargo Bank, NA sr. unsec. notes FRN, Ser. MTN(M)	0.321	7/15/19		11,000,000	10,999,998
Total corporate bonds and notes (cost $45,502,863)					$45,502,863
U.S. TREASURY OBLIGATIONS (2.2%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
U.S. Treasury Notes FRN	0.094	4/30/16		$13,050,000	$13,050,790
U.S. Treasury Notes FRN	0.070	1/31/16		14,700,000	14,696,651
Total U.S. treasury obligations (cost $27,747,441)					$27,747,441
U.S. GOVERNMENT AGENCY OBLIGATIONS (1.8%)(a)
	Yield (%)	Maturity date		Principal amount	Value
Federal Home Loan Bank unsec. discount notes	0.065	8/1/14		$14,000,000	13,998,553
Federal Home Loan Mortgage Corp. unsec. discount notes	0.120	7/1/14		8,630,000	8,630,000
Total U.S. government agency obligations (cost $22,628,553)					$22,628,553
TIME DEPOSITS (1.5%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
Australia & New Zealand Banking Group, Ltd./Cayman Islands (Cayman Islands)	0.080	7/1/14		$19,000,000	$19,000,000
Total time deposits (cost $19,000,000)					$19,000,000
BANKERS ACCEPTANCES (0.3%)(a)
	Interest rate (%)	Maturity date		Principal amount	Value
JPMorgan Chase Bank	0.130	7/28/14		$3,399,000	$3,398,669
Total bankers acceptances (cost $3,398,669)					$3,398,669
TOTAL INVESTMENTS
Total investments (cost $1,283,038,413)(b)					$1,283,038,413

Key to holding's abbreviations
BKNT	Bank Note
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
VRDN	Variable Rate Demand Notes, which are floating-rate securities with long-term maturities that carry coupons that reset and are payable upon demand either daily, weekly or monthly. 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, 2013 through June 30, 2014 (the reporting period). Within the following notes to the portfolio, references to “ASC 820” represent Accounting Standards Codification 820 Fair Value Measurements and Disclosures, references to “Putnam Management” represent Putnam Investment Management, LLC, the fund's manager, an indirect wholly-owned subsidiary of Putnam Investments, LLC and references to “OTC”, if any, represent over-the-counter.
(a)	Percentages indicated are based on net assets of $1,282,289,484.
(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, if higher than the rating of the direct issuer of the bond, 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.
(AFF)	Affiliated company. The rate quoted in the security description is the annualized 7-day yield of the fund at the close of the reporting period. Transactions during the period with Putnam Money Market Liquidity Fund, which is under common ownership and control, were as follows:
	Name of affiliate	Fair value at the beginning of the reporting period	Purchase cost	Sale proceeds	Investment income	Fair value at the end of the reporting period
	Putnam Money Market Liquidity Fund *	$58,235,503	$—	$6,500,000	$24,509	$51,735,503
	* Management fees charged to Putnam Money Market Liquidity Fund have been waived by Putnam Management.
(M)	The security's effective maturity date is less than one year.
	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	75.0%
	Australia	6.3
	Sweden	5.0
	Japan	2.9
	Canada	2.8
	United Kingdom	2.6
	Norway	1.6
	Switzerland	1.5
	Cayman Islands	1.5
	France	0.5
	Netherlands	0.3
	Total	100.0%
	Security valuation: The valuation of the fund’s portfolio instruments is determined by means of the amortized cost method (which approximates fair 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 open-end investment companies (excluding exchange traded funds), if any, which can be classified as Level 1 or Level 2 securities, are valued based on their net asset value. The net asset value of such investment companies equals the total value of their assets less their liabilities and divided by the number of their outstanding shares.
	Repurchase agreements: The fund, or any joint trading account, through its custodian, receives delivery of the underlying securities, the fair 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	$—	$130,967,356	$—
Bankers acceptances	—	3,398,669	—
Certificates of deposit	—	115,985,657	—
Commercial paper	—	376,353,835	—
Corporate bonds and notes	—	45,502,863	—
Municipal bonds and notes	—	150,165,536	—
Mutual funds	51,735,503	—	—
Repurchase agreements	—	339,553,000	—
Time deposits	—	19,000,000	—
U.S. government agency obligations	—	22,628,553	—
U.S. treasury obligations	—	27,747,441	—
Totals by level	$51,735,503	$1,231,302,910	$—

	The following table summarizes any derivatives, repurchase agreements and reverse repurchase agreements, at the end of the reporting period, that are subject to an enforceable master netting agreement or similar agreement. For securities lending transactions, if applicable, see note "(d)" above, and for borrowing transactions associated with securities sold short, if applicable, see the "Short sales of securities" note above.
		Citigroup Global Markets, Inc./Salomon Brothers	Merrill Lynch, Pierce, Fenner and Smith Inc.	RBC Capital Markets, LLC	Total
	Assets:
	Repurchase agreements	$ 113,553,000	$113,000,000	$113,000,000	$339,553,000
	Total Assets	$113,553,000	$113,000,000	$113,000,000	$339,553,000
	Liabilities:
	Total Liabilities	$—	$—	$—	$—
	Total Financial and Derivative Net Assets	$113,553,000	$113,000,000	$113,000,000	$339,553,000
	Total collateral received (pledged)##†	$113,553,000	$113,000,000	$113,000,000
	Net amount	$—	$—	$—
†	Additional collateral may be required from certain brokers based on individual agreements.
##	Any over-collateralization of total financial and derivative net assets is not shown. Collateral may include amounts related to unsettled agreements.
	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: August 27, 2014

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: August 27, 2014

By (Signature and Title):

/s/ Steven D. Krichmar
Steven D. Krichmar
Principal Financial Officer
Date: August 27, 2014