As filed with the Securities and Exchange Commission on June 24, 2010

                                                                                                                File Nos. 333-92935 and 811-09729

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x
Post-Effective Amendment No.  439	x
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No.  439	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) 597-2000

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.	JESSICA N. BENTLEY, ESQ.
WILLKIE FARR & GALLAGHER LLP	WILLKIE FARR & GALLAGHER LLP	BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A.
787 SEVENTH AVENUE	1875 K STREET, N.W.	400 HOWARD STREET
NEW YORK, N.Y. 10019-6099	WASHINGTON, D.C. 20006-1238	SAN FRANCISCO, CA 94105

It is proposed that this filing will become effective (check appropriate box):

¨     Immediately upon filing pursuant to paragraph (b)	x    On July 23, 2010, 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)

If appropriate, check the following box:

x The post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Explanatory Note

This Post-Effective Amendment No. 439 to the Registrant’s Registration Statement on Form N-1A is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 of the Securities Act of 1933, as amended (the “1933 Act”), solely for the purpose of delaying, until July 23, 2010, the effectiveness of the registration statement for the iShares MSCI Brazil Small Cap Index Fund (the “Fund”), filed in Post-Effective Amendment No. 373 on January 29, 2010, pursuant to paragraph (a) of Rule 485 of the 1933 Act. The effectiveness of the Registration Statement of the Fund was delayed in Post-Effective Amendment No. 409 on April 13, 2010,  in Post-Effective Amendment No. 429 on May 12, 2010 and in Post-Effective Amendment No. 434 on May 28, 2010, each pursuant to paragraph (b)(1)(iii) of Rule 485 of the 1933 Act.

This Post-Effective Amendment No. 439 incorporates by reference the information contained in Parts A, B and C of Post-Effective Amendment No. 373.

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)(1)(iii) of the Securities Act of 1933, as amended, and has duly caused this Post-Effective Amendment No. 439 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 24th day of June 2010.

By:
	Michael Latham*
	President and Trustee
	Date: June 24, 2010

Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 439 to the Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

By:
	Michael Latham*
	President and Trustee
	Date: June 24, 2010
	John E. Martinez**
	Trustee
	Date: June 24, 2010
	George G. C. Parker**
	Trustee
	Date: June 24, 2010
	Cecilia H. Herbert**
	Trustee
	Date: June 24, 2010
	Charles A. Hurty**
	Trustee
	Date: June 24, 2010
	John E. Kerrigan**
	Trustee
	Date: June 24, 2010
	Robert H. Silver**
	Trustee
	Date: June 24, 2010
	Darrell Duffie**
	Trustee
	Date: June 24, 2010
	Robert S. Kapito***
	Trustee
	Date: June 24, 2010
	/s/ Jack Gee
	Jack Gee
	Treasurer
	Date: June 24, 2010
*, **, ***By:	/s/ Jack Gee
	Jack Gee
	Attorney-in-fact
	Date: June 24, 2010

*	Power of Attorney, dated May 1, 2010, for Michael Latham is incorporated herein by reference to Post-Effective Amendment No. 417, filed May 3, 2010.
**	Powers of Attorney, each dated February 23, 2009, for John E. Martinez, George G.C. Parker, Cecilia H. Herbert, Charles A. Hurty, John E. Kerrigan, Robert H. Silver, and Darrell Duffie are incorporated herein by reference to Post-Effective Amendment No. 226, filed April 22, 2009.
***	Power of Attorney, dated December 8, 2009, for Robert S. Kapito is incorporated by reference to Post-Effective Amendment No. 354, filed December 28, 2009.