June 28, 2013

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. 8
         (Registration Statement File Nos. 333-174332, 811-22559)

Ladies and Gentleman:

      On behalf of the First Trust High Yield 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
October 26, 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