P.O. Box 2600
		Valley Forge, PA 19482-2600
		610-669-1955
		tara_r_buckley@vanguard.com
January 30, 2012
Brion Thompson, Esq.
U.S. Securities & Exchange Commission		via electronic filing
100 F Street, N.E.
Washington, DC 20549
RE:	Vanguard Fixed Income Securities Funds; File No. 2-47371

Dear Mr. Thompson:

The following responds to your comments of December 20, 2011 on the post-effective amendment of the above-referenced registrant. You commented on Post-Effective Amendment No. 91, which was filed on November 22, 2011 pursuant to Rule 485(a).

Comment 1:	Short-Term Treasury Fund – Prospectus – Primary Investment
	Strategies
Comment:	The Primary Investment Strategies section states that the dollar-weighted
	average maturity for the Fund will be 1-4 years. The staff takes the
	position that the average maturity for a short-term fund is 1-3 years.
Response:	The adopting release for rule 35d-1 states that the purpose of the rule is to
	prevent investment companies from adopting names that could mislead
	investors about a fund’s investments and risks. In the adopting release, the
	SEC provided guidance that the dollar-weighted average maturity for a
	short-term bond fund should not exceed 3 years. The text of the rule,
	however, does not require a 3-year maturity for short-term funds. We
	believe that under any reasonable interpretation of the adopting release
	and rule 35d-1, a dollar-weighted average maturity range of 1- 4 years
	qualifies as “short-term.” For these reasons, we believe that the names of
	the Vanguard Short-Term Treasury, Short-Term Federal and Short-Term
	Investment Grade Funds are not misleading.
Comment 2:	Long-Term Investment-Grade Fund – Prospectus – Primary
	Investment Strategies
Comment:	Add disclosure to the Primary Investment Strategies section identifying
	the dollar-weighted average maturity of the fund’s benchmark index.
Response:	We have added the requested disclosure.

0234567

Brion Thompson, Esq.
January 30, 2012
Page 2

Tandy Requirements

As required by the SEC, each Fund acknowledges that:

•	The Fund is responsible for the adequacy and accuracy of the
	disclosure in the filing.
•	Staff comments or changes in response to staff comments in the filings
	reviewed by the staff do not foreclose the Commission from taking
	any action with respect to the filing.
•	The Fund may not assert staff comments as a defense in any
	proceeding initiated by the Commission or any person under the
	federal securities laws of the United States.

Please contact me at (610) 669-1955 with any questions or comments regarding the above responses and explanations.

Sincerely,

Tara R. Buckley
Senior Counsel
The Vanguard Group, Inc.