FIRST TRUST EXCHANGE-TRADED FUND IV
                       120 EAST LIBERTY DRIVE, SUITE 400
                            WHEATON, ILLINOIS 60187


                                 June 17, 2015


Division of Investment Management
Securities and Exchange Commission
100 F Street, NE
Washington, DC 20549


Re:      Form AW - Request for Withdrawal
         First Trust Exchange-Traded Fund IV
         Registration on Form N-1A
         Post-Effective Amendment No. 11
         (Registration Statement File Nos. 333-174332, 811-22559)


Ladies and Gentleman:

      On behalf of the First Trust Inflation Managed Fund (the "Fund"), a series
of First Trust Exchange-Traded Fund IV (the "Trust"), the Trust hereby requests
the withdrawal of the above-mentioned Registration Statement pursuant to Rule
477 of Regulation C under the Securities Act of 1933, as amended. The
Registration Statement was originally filed with the Securities and Exchange
Commission on December 7, 2012. No securities of the Fund were sold, or will be
sold, pursuant to the Registration Statement.

Sincerely,

FIRST TRUST EXCHANGE-TRADED FUND IV

By:      /s/ Mark R. Bradley
         -------------------------------------
         Mark R. Bradley,
         President and Chief Executive Officer