VUSXX Vanguard Admiral Fund Treasury Money Market Fund (MM)

December 23, 2009

U.S. Securities & Exchange Commission
100 F Street, N.E.
Washington, DC 20549

Re: Vanguard Admiral Funds (the “Trust”)
File No. 33-49023

Ladies and Gentlemen:

Transmitted herewith pursuant to Rule 497(j) under the Securities Act of 1933 is certification that the Prospectuses and Statement of Additional Information with respect to the above-mentioned Trust do not differ from that filed in the most recent post-effective amendment, which was filed electronically.

Sincerely,

Frances T. Han
Associate Counsel
The Vanguard Group, Inc.

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