UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF
REGISTERED MANAGEMENT COMPANY


Investment Company Act file number: 811-7043

Name of Registrant: Vanguard Admiral Funds

Address of Registrant: P.O. Box 2600
Valley Forge, PA 19482

Name and address of agent for service: Heidi Stam, Esquire
P.O. Box 876
Valley Forge, PA 19482

Registrant’s telephone number, including area code: (610) 669-1000


Date of fiscal year end: August 31

Date of reporting period: May 31, 2008

Item 1: Schedule of Investments

Vanguard Admiral Treasury Money Market Fund
Schedule of Investments
May 31, 200 8

Yield(1) Maturity
Date 		Face
Amount
($000) 		Market
Value
($000)
U.S. Government Securities (100.0%)        
U.S. Treasury Bill 1.800 6/5/2008  1,452,630  1,452,341 
U.S. Treasury Bill 1.425%-3.272% 6/12/2008  629,552  629,161 
U.S. Treasury Bill 3.011%-3.304% 6/19/2008  820,000  818,686 
U.S. Treasury Bill 1.946%-3.553% 6/26/2008  1,138,217  1,135,996 
U.S. Treasury Bill 1.445%-3.012% 7/3/2008  1,628,089  1,625,824 
U.S. Treasury Bill 1.455%-1.619% 7/10/2008  1,237,210  1,235,265 
U.S. Treasury Bill 2.430% 7/24/2008  1,875,000  1,868,375 
U.S. Treasury Bill 1.425% 7/31/2008  272,575  271,930 
U.S. Treasury Bill 1.266%-2.184% 8/7/2008  844,970  841,917 
U.S. Treasury Bill 1.297%-2.102% 8/14/2008  1,440,000  1,434,899 
U.S. Treasury Bill 1.469%-2.128% 8/21/2008  2,702,460  2,690,648 
U.S. Treasury Bill 2.092% 8/28/2008  565,000  562,141 
U.S. Treasury Bill 1.791% 9/4/2008  185,000  184,133 
U.S. Treasury Bill 1.461% 9/11/2008  450,000  448,151 
U.S. Treasury Bill 1.877% 9/18/2008  997,000  991,370 
U.S. Treasury Bill 1.613% 10/9/2008  1,060,000  1,053,875 
U.S. Treasury Bill 1.613%-1.628% 10/16/2008 900,000 894,489
U.S. Treasury Bill 1.694% 10/23/2008 56,000 55,624
U.S. Treasury Bill 1.715% 10/30/2008 1,520,000 1,509,162
U.S. Treasury Bill 1.755% 11/6/2008  633,000  628,166 
U.S. Treasury Bill 1.939% 11/28/2008 1,422,000 1,408,349
U.S. Treasury Note 3.250% 8/15/2008  230,000  230,912 
Total U.S. Government Securities
(Cost $21,971,414)         21,971,414 
Other Assets and Liabilities-Net (0.0%)         8,200 
Net Assets (100%)         21,979,614 

1 Represents annualized yield at date of purchase for discount securities, and coupon for coupon-bearing securities.

Investment Securities: Securities are valued at amortized cost, which approximates market value.

Item 2: Controls and Procedures.

(a) Disclosure Controls and Procedures. The Principal Executive and Financial Officers concluded that the Registrant’s Disclosure Controls and Procedures are effective based on their evaluation of the Disclosure Controls and Procedures as of a date within 90 days of the filing date of this report.

(b) Internal Control Over Financial Reporting. During the last fiscal quarter, there was no significant change in the Registrant’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3:

Exhibits.
(a) Certifications.

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.

VANGUARD ADMIRAL FUNDS

BY: (signature)
(HEIDI STAM)
JOHN J. BRENNAN*
CHIEF EXECUTIVE OFFICER

Date: July 16, 2008

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.

VANGUARD ADMIRAL FUNDS

BY: (signature)
(HEIDI STAM)
JOHN J. BRENNAN*
CHIEF EXECUTIVE OFFICER

Date: July 16, 2008

VANGUARD ADMIRAL FUNDS

BY: (signature)
(HEIDI STAM)
THOMAS J. HIGGINS*
TREASURER

Date: July 16, 2008

*By Power of Attorney, Filed on January 18, 2008, See File Number 2-29601. Incorporated by Reference.

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