As filed with the Securities and Exchange Commission on March 20, 2013

Securities Act File No. 2-47015

Investment Company Act File No. 811-2354

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933	x
Pre-Effective Amendment No.	¨
Post-Effective Amendment No. 95	x
and/or
REGISTRATION STATEMENT
UNDER
THE INVESTMENT COMPANY ACT OF 1940

BLACKROCK LIQUIDITY FUNDS

(Exact Name of Registrant as Specified in Charter)

100 Bellevue Parkway, Wilmington, Delaware 19809

(Address of Principal Executive Office)

Registrant’s Telephone Number, including Area Code (302) 797-2000

Brian Kindelan

100 Bellevue Parkway

Wilmington, Delaware 19809

United States of America

(Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box)

x Immediately upon filing pursuant to paragraph (b)

¨ On (date) pursuant to paragraph (b)

¨ 60 days after filing pursuant to paragraph (a)(1)

¨ On (date) pursuant to paragraph (a)(1)

¨ 75 days after filing pursuant to paragraph (a)(2)

¨ On (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

¨ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Title of Securities Being Registered: Shares of Beneficial Interest.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all the requirements for effectiveness of this Post-Effective Amendment to its Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment to its Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and the State of New York, on March 20, 2013.

BLACKROCK LIQUIDITY FUNDS
(REGISTRANT)
By:	/s/ John M. Perlowski
	John M. Perlowski
	President and Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to its Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ John M. Perlowski	President and Chief Executive Officer (Principal Executive Officer)	March 20, 2013
John M. Perlowski
/s/ Neal J. Andrews	Chief Financial Officer (Principal Financial and Accounting Officer)	March 20, 2013
Neal J. Andrews
DAVID O. BEIM*	Trustee
David O. Beim
RONALD W. FORBES*	Trustee
Ronald W. Forbes
DR. MATINA S. HORNER*	Trustee
Dr. Matina S. Horner
RODNEY D. JOHNSON*	Trustee
Rodney D. Johnson
HERBERT I. LONDON*	Trustee
Herbert I. London
IAN A. MACKINNON*	Trustee
Ian A. MacKinnon
CYNTHIA A. MONTGOMERY*	Trustee
Cynthia A. Montgomery
JOSEPH P. PLATT*	Trustee
Joseph P. Platt
ROBERT C. ROBB, JR.*	Trustee
Robert C. Robb, Jr.

TOBY ROSENBLATT*	Trustee
Toby Rosenblatt
KENNETH L. URISH*	Trustee
Kenneth L. Urish
FREDERICK W. WINTER*	Trustee
Frederick W. Winter
PAUL L. AUDET*	Trustee
Paul L. Audet
HENRY GABBAY*	Trustee
Henry Gabbay

*By:	/s/ Benjamin Archibald	March 20, 2013
	Benjamin Archibald (Attorney-In-Fact)

EXHIBIT INDEX

Index No.	Description of Exhibit
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase