As filed with the Securities and Exchange Commission on September 26, 2008 

 SECURITIES ACT FILE NO. 333-134551
 INVESTMENT COMPANY ACT FILE NO. 811-21906
================================================================================

 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. 63 |X|

 and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 |X|

 Amendment No. 66
 |X|

 (Check appropriate box or boxes)

CLAYMORE EXCHANGE-TRADED FUND TRUST
(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

2455 CORPORATE WEST DRIVE
LISLE, ILLINOIS 60532
(Address of Principal Executive
Offices)

(630) 505-3700
Registrant's Telephone Number

KEVIN M. ROBINSON, ESQ.
CLAYMORE ADVISORS, LLC
2455 CORPORATE WEST DRIVE
LISLE, ILLINOIS 60532
(Name and Address of Agent for Service)

Copy to:
STUART M. STRAUSS, ESQ.
CLIFFORD CHANCE US LLP
31 WEST 52ND STREET
NEW YORK, NEW YORK 10019

APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:

IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)

_________ IMMEDIATELY UPON FILING PURSUANT TO PARAGRAPH (B) OF RULE 485.

X ON OCTOBER 24, 2008 PURSUANT TO PARAGRAPH (B) OF RULE 485.

_________ 60 DAYS AFTER FILING PURSUANT TO PARAGRAPH (A)(1) OF RULE 485.

_________ ON [DATE] PURSUANT TO PARAGRAPH (A) OF RULE 485.

_________ 75 DAYS AFTER FILING PURSUANT TO PARAGRAPH (A)(2) OF RULE 485.

_________ 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. 50 to its Registration Statement until October 24, 2008. Parts A, B and C of Registrant's Post-Effective Amendment No. 50 under the Securities Act of 1933 and Amendment No. 53 under the Investment Company Act of 1940, filed on March 14, 2008, are incorporated by reference herein.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Lisle and State of Illinois on the 26th day of September, 2008.

CLAYMORE EXCHANGE-TRADED FUND TRUST 

By: /s/ J. Thomas Futrell
 ------------------------------
 J. Thomas Futrell
 Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated. 

 SIGNATURES TITLE DATE

 * September 26, 2008
--------------------------
Randall C. Barnes Trustee

 * September 26, 2008
--------------------------
Ronald A. Nyberg Trustee

 * September 26, 2008
--------------------------

Ronald E. Toupin, Jr. Trustee 

 * September 26, 2008
-------------------------- Trustee
Nicholas Dalmaso



/s/ Steven M. Hill September 26, 2008
-------------------------- Treasurer, Chief Financial
Steven M. Hill Officer and Chief
 Accounting Officer
*/s/ Kevin M. Robinson September 26, 2008
--------------------------
Kevin M. Robinson
Attorney-In-Fact, pursuant to power of attorney

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