400 Howard Street P.O. Box 7101 San Francisco, CA 94105 Tel +1 415 670 7897 Fax +1 415 618 5462 edward.baer@blackrock.com

February 6, 2014

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

RE: iShares U.S. ETF Trust (the “Trust”)

           Securities Act File No. 333-179904;

           Investment Company Act File No. 811-22649

Ladies and Gentlemen:

Pursuant to Rule 497(j) of the Securities Act of 1933, as amended, and on behalf of the Trust, please accept this letter as certification that the Prospectuses and Statements of Additional Information, each dated February 5, 2014, do not differ from those contained in the following Post-Effective Amendments to the Trust’s Registration Statement on Form N-1A, filed electronically on February 5, 2014.

Series	Post-Effective Amendment No.
iShares Interest Rate Hedged Corporate Bond ETF	53
iShares Interest Rate Hedged High Yield Bond ETF	54

If you have any questions, please do not hesitate to contact Benjamin J. Haskin of Willkie Farr & Gallagher LLP at (202) 303-1124 or me at (415) 670-7897.

Yours truly,

/s/ Edward Baer

Edward Baer, Esq.

cc:  Benjamin J. Haskin, Esq.