FEDERATED ADVISER SERIES

4000 Ericsson Drive
Warrendale, Pennsylvania 15086-7561

December 30, 2019

EDGAR Operations Branch

U.S. Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, DC 20549

RE:  FEDERATED ADVISER SERIES

FEDERATED MDT LARGE CAP VALUE FUND (the “Trust”)

Class A Shares

Class B Shares

Class C Shares

Class R Shares

Institutional Shares

Service Shares

Class R6 Shares

Class T Shares

Federated Hermes Absolute Return Credit Fund

Class A Shares

Class C Shares

Institutional Shares

Class R6 Shares

Federated Hermes Unconstrained Credit Fund

Class A Shares

Class C Shares

Institutional Shares

Class R6 Shares

1933 Act File No. 333-218374

1940 Act File No. 811-23259  

Dear Sir or Madam:

Pursuant to Rule 497(j) of the Securities Act of 1933, the above-referenced Trust hereby certifies that the definitive forms of Prospectuses and Statements of Additional Information dated December 31, 2019, that would have been filed under Rule 497(c), do not differ from the forms of Prospectuses and Statements of Additional Information contained in the most recent Registration Statement for the Trust. This Registration Statement was electronically filed under Rule 485(b) as Post-Effective amendment No. 24 on December 23, 2019.

If you have any questions regarding this certification, please contact me at (412) 288-1474.

Very truly yours,

/s/ George F. Magera

George F. Magera

Assistant Secretary