As filed with the U.S. Securities and Exchange Commission on July 16, 2012

Securities Act File No. 333-92935

Investment Company Act File No. 811-09729

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933	x
Pre-Effective Amendment No.	¨
Post-Effective Amendment No. 748	x
and/or
REGISTRATION STATEMENT
UNDER
THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 748	x

(Check appropriate box or boxes)

iShares Trust

(Exact Name of Registrant as Specified in Charter)

c/o State Street Bank and Trust Company

200 Clarendon Street

Boston, MA 02116

(Address of Principal Executive Office)(Zip Code)

Registrant’s Telephone Number, including Area Code (415) 670-2000

The Corporation Trust Company

1209 Orange Street

Wilmington, DE 19801

(Name and Address of Agent for Service)

With Copies to:

MARGERY K. NEALE, ESQ.	BENJAMIN J. HASKIN, ESQ.	ANDREW JOSEF, ESQ.
WILLKIE FARR & GALLAGHER LLP	WILLKIE FARR & GALLAGHER LLP	BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A.
787 SEVENTH AVENUE	1875 K STREET, NW	400 HOWARD STREET
NEW YORK, NY 10019-6099	WASHINGTON, D.C. 20006-1238	SAN FRANCISCO, CA 94105

Continuous

(July 16, 2012)

It is proposed that this filing will become effective:

¨ immediately upon filing pursuant to paragraph (b)

x on July 16, 2012 pursuant to paragraph (b)

¨ 60 days after filing pursuant to paragraph (a)(1)

¨ on (date) pursuant to paragraph (a)(1)

¨ 75 days after filing pursuant to paragraph (a)(2)

¨ on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

¨ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

This filing relates solely to the following Funds, each a series of iShares Trust:

iShares 10+ Year Credit Bond Fund

iShares 10+ Year Government/Credit Bond Fund

iShares Barclays 1-3 Year Credit Bond Fund

iShares Barclays 1-3 Year Treasury Bond Fund

iShares Barclays 3-7 Year Treasury Bond Fund

iShares Barclays 7-10 Year Treasury Bond Fund

iShares Barclays 10-20 Year Treasury Bond Fund

iShares Barclays 20+ Year Treasury Bond Fund

iShares Barclays Agency Bond Fund

iShares Barclays Aggregate Bond Fund

iShares Barclays Credit Bond Fund

iShares Barclays Government/Credit Bond Fund

iShares Barclays Intermediate Credit Bond Fund

iShares Barclays Intermediate Government/Credit Bond Fund

iShares Barclays MBS Bond Fund

iShares Barclays Short Treasury Bond Fund

iShares iBoxx $ High Yield Corporate Bond Fund

iShares iBoxx $ Investment Grade Corporate Bond Fund

iShares S&P California AMT-Free Municipal Bond Fund

iShares S&P National AMT-Free Municipal Bond Fund

iShares S&P New York AMT-Free Municipal Bond Fund

iShares S&P Short Term National AMT-Free Municipal Bond Fund

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all the requirements for the effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, as amended, and has duly caused this Post-Effective Amendment No. 748 to the Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of San Francisco and the State of California on the 16^th day of July, 2012.

iSHARES TRUST

By:
	Michael Latham*
	President and Trustee
Date:	July 16, 2012

Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 748 to the Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

Michael Latham*

President and Trustee

Date: July 16, 2012

John E. Martinez*

Trustee

Date: July 16, 2012

George G.C. Parker*

Trustee

Date: July 16, 2012

Cecilia H. Herbert*

Trustee

Date: July 16, 2012

Charles A. Hurty*

Trustee

Date: July 16, 2012

John E. Kerrigan*

Trustee

Date: July 16, 2012

Robert H. Silver*

Trustee

Date: July 16, 2012

Robert S. Kapito*

Trustee

Date: July 16, 2012

Madhav V. Rajan*

Trustee

Date: July 16, 2012

/s/ Jack Gee

Jack Gee

Treasurer

Date: July 16, 2012

/s/ Jack Gee

* By: Jack Gee

Attorney-in-fact

Date: July 16, 2012

* Powers of Attorney, each dated December 6, 2011, for Michael A. Latham, Charles A. Hurty, Cecilia H. Herbert, John E. Kerrigan, Robert H. Silver, George G.C. Parker, John E. Martinez, Madhav V. Rajan and Robert S. Kapito are incorporated herein by reference to Post-Effective Amendment No. 717, filed March 8, 2012.

EXHIBIT INDEX

Index No.	Description of Exhibit
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase