Powershares Exchange Traded Fund Trust- (485BXT)

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 20, 2008.

No. 333-102228

No. 811-21265

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		o
Pre-Effective Amendment No.		o
Post-Effective Amendment No. 193		x
		and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
Amendment No. 195		x

(Check appropriate box or boxes)

POWERSHARES EXCHANGE-TRADED FUND TRUST

(Exact Name of Registrant as Specified in Charter)

301 West Roosevelt Road

Wheaton, IL 60187

(Address of Principal Executive Office)

Registrant’s Telephone Number, including Area Code: (800) 983-0903

H. Bruce Bond		With a copy to:
301 West Roosevelt Road		Stuart M. Strauss
Wheaton, IL 60187		Clifford Chance US LLP
(Name and Address of Agent for Service)		31 West 52nd Street
		New York, NY 10019

APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:

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

o immediately upon filing pursuant to paragraph (b) of Rule 485.

x on July 18, 2008 pursuant to paragraph (b) of Rule 485.

o 60 days after filing pursuant to paragraph (a)(1) of Rule 485.

o on [date] pursuant to paragraph (a) of Rule 485.

o 75 days after filing pursuant to paragraph (a)(2) of Rule 485.

o on [date] pursuant to paragraph (a) of Rule 485.

The sole purpose of this filing is to delay the effectiveness of the Trust’s Post-Effective Amendment No. 159 to its Registration Statement until July 18, 2008. Post-Effective Amendment No. 159 to the Trust’s Registration Statement relates to the PowerShares Lux Nanotech Portfolio, which was created pursuant to Post-Effective Amendment No. 35 to the Trust’s Registration Statement filed on July 12, 2005. Post-Effective Amendment No. 159 to the Trust’s Registration Statement was filed in order to include global securities in PowerShares Lux Nanotech Portfolio’s portfolio. The effectiveness of the Registration Statement relating to this change was delayed pursuant to Post-Effective Amendment Nos. 175, 180 and 189 to the Trust’s Registration Statement filed on March 31, 2008, April 25, 2008 and May 23, 2008, respectively. Parts A, B and C of Registrant’s Post-Effective Amendment No. 159 under the Securities Act of 1933 and Amendment No. 161 under the Investment Company Act of 1940, filed on January 31, 2008 are incorporated by reference herein.

SIGNATURES

Pursuant to the requirements of the Securities Act and the Investment Company Act, the Fund certifies that it meets all of the requirements for effectiveness of this registration statement under Rule 485(b) under the Securities Act and has duly caused this registration statement to be signed on its behalf by the undersigned, duly authorized, in the City of Wheaton and State of Illinois, on the 20th day of June, 2008.

	PowerShares Exchange-Traded Fund Trust

	By:	/s/ Harold Bruce Bond
		Title: Harold Bruce Bond, President

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed below by the following persons in the capacities indicated on the dates indicated.

SIGNATURE	TITLE	DATE

/s/ Harold Bruce Bond	President and Chairman	June 20, 2008
Harold Bruce Bond

/s/ Bruce T. Duncan	Chief Financial Officer,	June 20, 2008
Bruce T. Duncan	Treasurer and Secretary

*/s/ Ronn R. Bagge	Trustee	June 20, 2008
Ronn R. Bagge

*/s/ Marc M. Kole	Trustee	June 20, 2008
Marc M. Kole

*/s/ D. Mark McMillan	Trustee	June 20, 2008
D. Mark McMillan

*/s/ Philip M. Nussbaum	Trustee	June 20, 2008
Philip M. Nussbaum

*/s/ Donald S. Wilson	Trustee	June 20, 2008
Donald S. Wilson

*By: /s/ Stuart M. Strauss		June 20, 2008
Stuart M. Strauss
Attorney-In-Fact