8-A12B

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                        --------------------------


                                    FORM 8-A
                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                     PURSUANT TO SECTION 12(B) OR (G) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                              VANGUARD WORLD FUNDS
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


STATE OF DELAWARE                             SEE BELOW
- -------------------------                     --------------------
(STATE OF INCORPORATION OF ORGANIZATION)      (IRS EMPLOYER
                                               IDENTIFICATION NO.)

C/O  VANGUARD WORLD FUNDS
     P.O. BOX 2600                                19482
     VALLEY FORGE, PA (                         (ZIP CODE)
- --------------------------
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)


     Securities to be registered pursuant to Section 12(b) of the Act:

Title of each class to be registered:       Exchange       I.R.S. Employer
                                                           Identification Number
Vanguard Mega Cap 300 ETF                NYSE Arca, Inc.     26-1091795
Vanguard Mega Cap 300 Value ETF          NYSE Arca, Inc.     26-1091877
Vanguard Mega Cap 300 Growth ETF         NYSE Arca, Inc.     26-1091935


     If this form relates to the registration of a class of securities pursuant
  to Section 12(b) of the Exchange Act and is effective pursuant to General
  Instruction A.(c), check the following box. [X]

     If this form relates to the registration of a class of securities pursuant
  to Section 12(g) of the Exchange Act and is effective pursuant to General
  Instruction A.(d), check the following box. [ ]

     Securities Act registration statement file number to which this form
  relates: 33-53683

     Securities to be registered pursuant to Section 12(g) of the Act: None




ITEM 1. DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED

     Reference is made to the Registrant's Post-Effective Amendment Nos. 43 and
45 to the Registration Statement on Form N-1A (Securities Act file number
33-53683 and Investment Company Act file number 811-07175, respectively
(collectively, the "Registration Statement")), which is incorporated herein by
reference.

ITEM 2. EXHIBITS

1.   Registrant's Agreement and Declaration of Trust, incorporated herein by
     reference to Exhibit (a) to the Registration Statement.

2.   Registrant's By-Laws, incorporated herein by reference to Exhibit (b) to
     the Registration Statement.

3.   Form of Global Certificate for the Registrant's Securities is filed
     herewith.


SIGNATURES

     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the Registrant has duly caused this registration statement to be signed
on its behalf by the undersigned, thereto duly authorized.


                              VANGUARD WORLD FUNDS


DATE: December 4, 2007            By: _______________________

                                  Heidi Stam
                                  Secretary

EX-99.J

NUMBER
[001]
CAPITAL STOCK

                                   ETF Shares

                            VANGUARD MEGA CAP 300 ETF
                         VANGUARD MEGA CAP 300 VALUE ETF
                        VANGUARD MEGA CAP 300 GROWTH ETF
                                 a Class of the
                        VANGUARD MEGA CAP 300 INDEX FUND
                     VANGUARD MEGA CAP 300 VALUE INDEX FUND
                     VANGUARD MEGA CAP 300 GROWTH INDEX FUND
                              each a Series of the
                              VANGUARD WORLD FUNDS
                          (A Delaware Statutory Trust)

         THIS CERTIFIES that CEDE & CO. is the holder of the current outstanding
number of Vanguard Mega Cap 300 ETF shares issued by the Vanguard Mega Cap 300
Index Fund, Vanguard Mega Cap 300 Value ETF shares issued by the Vanguard Mega
Cap 300 Value Index Fund, Vanguard Mega Cap 300 Growth ETF shares issued by the
Vanguard Mega Cap 300 Growth Index Fund (each the "Fund") shown from time to
time on the records of the Vanguard World Funds, a Delaware statutory trust (the
"Trust"), as represented by this certificate of the Trust, transferable only on
the books and records of the Trust by the holder hereof in person or by duly
authorized attorney-in-fact upon surrender of this Certificate properly
endorsed. This Certificate is not valid until countersigned by the transfer
agent of the Trust.

         The registered holder of this Certificate is entitled to all the
rights, interest and privileges of a holder of ETF Shares as provided by the
Declaration of Trust, the by-laws of the Trust, and the Vanguard Funds Multiple
Class Plan as from time to time amended, which are incorporated by reference
herein.

         This Certificate is executed on behalf of the Trust and the obligations
hereof are not binding upon any of the Trustees, officers or shareholders of the
Trust individually, but are binding only upon the assets and property of the
Fund.

         IN WITNESS WHEREOF, the said Trust has caused this Certificate to be
signed by its duly authorized officer.

Countersigned:                                    Dated: __________________

BROWN BROTHERS HARRIMAN & CO.                     VANGUARD WORLD FUNDS

(the Transfer Agent)                              (the Trust)


By:                                               By:______________________
   --------------------------
                                                     John J. Brennan
      Authorized Signature                        Chairman, President and
                                                     Chief Executive Officer






Unless this Certificate is presented by an authorized representative of The
Depository Trust Company, a New York corporation ("DTC"), to the Trust or its
transfer agent for registration of transfer, exchange or payment, and any
certificate issued is registered in the name of Cede & Co., or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.