Putnam Investments 

One Post Office Square 

Boston, MA 02109 

November 18, 2009 

Securities and Exchange Commission
100 F Street, NE
Washington, DC 20549

RE:	Putnam Money Market Liquidity Fund (Reg. No. 33-515) (811- 07513) (the “Fund”)
	Post-Effective Amendment No.98 to Registration Statement on Form N-1A

Ladies and Gentlemen:

We are filing the referenced Amendment pursuant to Rule 485(a) under the Securities Act of 1933 and Rule 8b-16 under the Investment Company Act of 1940 for review and comment by the Staff of the Commission. The Amendment is marked to show changes from the Prospectus and Statement of Additional Information dated March 30, 2009, filed with the Commission on April 13, 2009. The Amendment is expected to become effective on January 30, 2010.

The Summary Section of the prospectus has been revised to comply with the amendments to form N-1A that took effect on March 31, 2009. The prospectus and statement of additional information also reflect other changes that Putnam plans to incorporate in the prospectuses and SAIs of Putnam funds as they are updated.

Any comments or questions on this filing may be directed to AnneMarie Duffy at at 1-800-225-2465, Ext. 14824, or to the undersigned at 1-800-225-2465, Ext. 11139.

Very truly yours, 

Laurie Grossman 

Senior Legal Product Specialist 

cc:	Timothy Cormier
	Ropes & Gray LLP