UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: September 7, 2010
Accession Number: 0000932471-10-002917
Submission Type: 485APOS
CIK: 0000036405
Company Name: VANGUARD INDEX FUNDS
File Number: 002-56846
REFERENCED SERIES/CLASSES (CONTRACTS)
Series ID
Class/Contract Name
S000002839 Vanguard 500 Index Fund
C000092055 ETF Shares