Filed with the Securities and Exchange Commission on June 4, 2004

1933 Act Registration File No. 333-1739

1940 Act File No. 811-07959

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x
Pre-Effective Amendment No. ____	¨
Post-Effective Amendment No. 145	x
And
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 147	x

(Check appropriate box or boxes.)

ADVISORS SERIES TRUST

(Exact Name of Registrant as Specified in Charter)

615 East Michigan Street

Milwaukee, Wisconsin 53202

(Address of Principal Executive Offices) (Zip Code)

(Registrant’s Telephone Numbers, Including Area Code) (414) 765-5340

Eric M. Banhazl

Advisors Series Trust

2020 E. Financial Way, Suite 100

Glendora, California 91741

(Name and Address of Agent for Service)

Copies to:

Julie Allecta, Esq.

Paul, Hastings, Janofsky & Walker LLP

55 Second Street, 24^th Floor

San Francisco, California 94105

It is proposed that this filing will become effective

*	immediately upon filing pursuant to paragraph (b)
Q	on July 1, 2004 pursuant to paragraph (b)
£	60 days after filing pursuant to paragraph (a)(1)
£	on ____________ pursuant to paragraph (a)(1)
£	75 days after filing pursuant to paragraph (a)(2)

£ on 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.

EXPLANATORY NOTE

Designation of New Effective Date for Previously Filed Amendment

Post-Effective Amendment No. 139 (the “Amendment”) was filed pursuant to Rule 485(a)(1) under the Securities Act of 1933 on April 14, 2004 and pursuant to Rule 485(a)(1) would become effective on June 15, 2004.

This Post-Effective Amendment No. 145 is being filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating July 1, 2004 as the new date upon which the Amendment shall become effective.

This Post-Effective Amendment No. 145 incorporates by reference the information contained in Parts A, B and C of the Amendment.

SIGNATURES

 Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act of 1933 and has duly caused this Amendment to the Registration Statement on Form N-1A of Advisors Series Trust to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Milwaukee and State of Wisconsin, on the 4^th day of June 2004.

ADVISORS SERIES TRUST
By:	Eric M. Banhazl*
	Eric M. Banhazl
	President

 Pursuant to the requirements of the Securities Act of 1933, this registration statement on Form N-1A of Advisors Series Trust has been signed below by the following persons in the capacities and on June 4, 2004.

Signature	Title
Eric M. Banhazl* Eric M. Banhazl	President and Trustee
Walter E. Auch* Walter E. Auch	Trustee
Donald E. O’Connor* Donald E. O’Connor	Trustee
George T. Wofford III* George T. Wofford III	Trustee
George J. Rebhan* George J. Rebhan	Trustee
James Clayburn LaForce* James Clayburn LaForce	Trustee
/s/ Douglas G. Hess Douglas G. Hess	Treasurer and Principal Financial and Accounting Officer
* /s/ Douglas G. Hess Douglas G. Hess Attorney-in-Fact pursuant to Power of Attorney.