As filed with the Securities and Exchange Commission on January 7, 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. 42 |X|

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

 Amendment No. 45
 |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

NICHOLAS DALMASO, 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 JANUARY 10, 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. 36 to its Registration Statement until January 10, 2008. Parts A, B and C of Registrant's Post-Effective Amendment No. 36 under the Securities Act of 1933 and Amendment No. 39 under the Investment Company Act of 1940, filed on October 16, 2007, 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 7th day of January, 2008.

CLAYMORE EXCHANGE-TRADED FUND TRUST 

By: /s/ Nicholas Dalmaso
 ------------------------------
 Nicholas Dalmaso
 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

 * January 7, 2008
--------------------------
Randall C. Barnes Trustee

 * January 7, 2008
--------------------------
Ronald A. Nyberg Trustee

 * January 7, 2008
--------------------------
Ronald E. Toupin, Jr. Trustee


/s/ Nicholas Dalmaso January 7, 2008
-------------------------- Trustee and Chief
Nicholas Dalmaso Executive Officer



/s/ Steven M. Hill January 7, 2008
-------------------------- Treasurer, Chief Financial
Steven M. Hill Officer and Chief
 Accounting Officer
*/s/ Nicholas Dalmaso January 7, 2008
--------------------------
Nicholas Dalmaso
Attorney-In-Fact, pursuant to power of attorney

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