SHIP LOGO  VANGUARD(R)
                                                     P.O Box 2600
                                                     Valley Forge, PA
                                                     19482-2600

                                                     610-669-1538
                                                     Judy_L_Gaines@vanguard.com
June 13, 2006


Christian Sandoe, Esq.
Division of Investment Management
U.S. Securities and Exchange Commission                  via electronic filing
450 Fifth Street,
N.W., Fifth Floor
Washington, D.C. 20549

RE:      Vanguard Horizon Funds


Dear Mr. Sandoe,

         The following responds to your comments of June 9, 2006 on the
post-effective amendment of the registration statement of the above-referenced
registrant. You commented on Post-Effective Amendment No. 30 which was filed on
April 24, 2006. All of the comments pertain to the Vanguard Global Equity Fund.


Comment 1:        Prospectus - Primary Investment Strategies
- ------------------------------------------------------------
Comment:          Consider adding strategy disclosure reflecting the Fund's
                  investment in Emerging Markets.

Response:         This language is already in the Primary Investment Strategy
                  section where we say, "The Fund typically invests in....as
                  well as a mix of developed and emerging markets stocks."
                  Accordingly, we do not plan to amend the disclosure in
                  response to this comment.

Comment 2:        Prospectus - Primary Investment Strategies
- ------------------------------------------------------------
Comment:          Consider adding primary investment strategy disclosure
                  reflecting the Fund's investment in small- and mid-cap stocks.

Response:         In the last paragraph beneath Security Selection, we state "As
                  a secondary investment strategy, the Fund will own companies
                  with market values of less than $15 billion, which are
                  considered small- to mid-cap by the Fund's investment
                  advisors. However, the advisors will frequently select stocks
                  with higher market values."

                  Since investing in small- and mid-cap stocks are a secondary
                  investment strategy, we do not plan to add related disclosure
                  to the primary investment strategy section.

                  We will, however, amend the primary risk disclosure to better
                  clarify that this risk is only primary to the extent that the
                  Fund invests in such stocks.



Christian Sandoe, Esq.
June 13, 2006
Page 2

Comment 3:        Prospectus - Performance/Risk Information
- -----------------------------------------------------------
Comment:          Please add the year-to-date footnote beneath the Annual Total
                  Return table.

Response:         We will make the requested modification.

Comment 4:        Prospectus - Market Exposure
- ----------------------------------------------
Comment:          Consider amending the disclosure to clarify that the term
                  global connotes diversification across a number of countries
                  in the world.

Response:         In Release No. IC-24828 (the "Names Rule Release"), the SEC
                  stated that:

                  "[t]he terms "international" and "global," however, connote
                  diversification among investments in a number of different
                  countries throughout the world, and "international" and
                  "global" funds will not be subject to the [Names] rule. We
                  would expect, however, that investment companies using these
                  terms in their names will invest their assets in investments
                  that are tied economically to a number of countries throughout
                  the world." (Emphasis added.)

                  The above-quoted guidance does not impose a particular
                  disclosure requirement; rather, it sets forth an expectation
                  regarding a fund's investment approach.

                  The Fund satisfies this expectation, and the Market Exposure
                  section discloses 1) the Fund's policy of investing in stocks
                  from the United States and other countries, and 2) that the
                  Fund is widely diversified across countries. We think that our
                  existing disclosure sufficiently conveys the idea that the
                  Fund invests across a number of countries throughout the
                  world. We do not think adding "throughout the world" is
                  necessary, so we do not plan to amend the disclosure in
                  response to this comment.

Comment 5:        Prospectus - Plain Talk About the Portfolio Managers
- ----------------------------------------------------------------------
Comment: Please clarify the role played by the various portfolio managers.

Response:         We have confirmed that the existing disclosure whereby the
                  PMs are referred to as "co-managers" is an accurate
                  description of their roles.  The PMs work together in managing
                  Fund assets, sharing in the determination of strategies and
                  risk exposures, and placing trades on behalf of the respective
                  advisory firms' portions of the Fund's assets.  Furthermore,
                  we believe that our existing disclosure satisfies the
                  requirements of Item 5(a)(2) of Form N-1A.  Accordingly, we do
                  not plan to amend the disclosure.


Comment 6:        SAI - Other Accounts Managed - PRIMECAP
- ---------------------------------------------------------
Comment:          In addition to the existing disclosure regarding other
                  accounts co-managed by the PMs, please clarify whether any of
                  the PMs individually manage any other accounts.

Response:         The PMs do not individually manage any other accounts, so we
                  do not plan to amend the existing disclosure.


Christan Sandoe, Esq.
June 13, 2006
Page 3

Comment 7:        SAI -    Description of Compensation - AllianceBernstein
- --------------------------------------------------------------------------
Comment:          Please describe the time periods for performance, whether
                  performance is pre- or post-tax, and the various peer groups
                  and benchmarks that are used in determining the bonus for the
                  AllianceBernstein PMs.


Response:         The compensation of investment professionals at
                  AllianceBernstein is based on their management of many
                  accounts/funds, and is not limited to managing this particular
                  Fund. That being the case, their compensation could relate to
                  the performance, both pre- and post-tax, over varying
                  performance period, compared against a multitude of peer
                  groups and benchmarks. Their compensation is not tied to
                  specific formulas. While the existing disclosure could be
                  construed as somewhat vague, it accurately captures the firm's
                  description of how their investment professionals are
                  compensated. Accordingly, we do not plan to amend the
                  disclosure.

Comment 8:        SAI -    Financial Statements
- -----------------------------------------------
Comment:          Please update the disclosure to reflect the fact that the
                  financial statements contained in the Fund's semiannual
                  report are now available and are incorporated by reference.

Response:         We will make the requested change.

Comment 9:        Tandy Requirements
- ------------------------------------
As required by the SEC, the Funds acknowledge that:

                  o Each Fund is responsible for the adequacy and accuracy of
                    the disclosure in the filing.
                  o 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.
                  o Each 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) 669-1538 with any questions or comments
regarding the above responses. Thank you.

Sincerely,


Judith L. Gaines
Associate Counsel
Securities Regulation, Legal Department