May 1, 2013

U.S. Securities & Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Re:	Vanguard World Funds (the “Trust”); File No. 2-17620
Commissioners:
Pursuant to Rule 497(e) under the Securities Act of 1933, we hereby file exhibits containing
interactive data format risk/return summary information that reflects the risk/return summary
information in the supplements dated April 17, 2013, filed pursuant to Rule 497(e), for the Vanguard
Mega Cap 300 Value Index Fund and Vanguard Mega Cap 300 Growth Index Fund, each a series of
the above mentioned Trust.
If you have any questions or comments concerning the foregoing, please contact me at
(610) 669-1538.
Sincerely,
Judith L. Gaines
Associate Counsel
The Vanguard Group, Inc.
Enclosures
cc: Amy Miller, Esq.
U. S. Securities and Exchange Commission