(logo) Fidelity Investments®||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| FPCMS
82 Devonshire Street
Boston MA 02109-3614
617-563-7000

December 21, 2010

U.S. Securities & Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attn: Edward Bartz

RE:	Fidelity Summer Street Trust (the trust):
	Fidelity Series Floating Rate High Income Fund Fidelity Series High Income Fund (the funds)
	File Nos. (002-58542) and (811-02737)
	Post-Effective Amendment No. 84

Ladies and Gentlemen:

Pursuant to Rule 8b-16 under the Investment Company Act of 1940, as amended, Regulation S-T and Rule 485(a) under the Securities Act of 1933, as amended, transmitted herewith on behalf of the trust is Post-Effective Amendment No. 84 to the trust's current effective Registration Statement on Form N-1A. This transmission contains a conformed signature page, the manually signed original of which, executed pursuant to Powers of Attorney dated September 30, 2009 and August 1, 2008, is maintained at the offices of the trust.

This filing serves to register Fidelity Series Floating Rate High Income Fund and Fidelity Series High Income Fund as new series of the trust and includes Prospectuses and Statements of Additional Information (SAIs) for each fund. The funds may be marketed through banks, savings and loan associations, or credit unions.

Please note that the cover page of the Prospectuses and SAIs contain the standard "red herring" legend called for by Rule 481 of Regulation C.

Pursuant to Rule 485(a), the trust elects an effective date of March 6, 2011. We request your comments by January 20, 2011.

Please contact Jamie Plourde at (617) 563-1375 in connection with any questions or comments regarding this filing.

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||	Sincerely,
	/s/ Nicole Garceau
	Nicole Garceau
	Legal Product Group