Tontogany (YTB-821) was a United States Navy Natick-class large harbor tug named for Tontogany, Ohio.

Delivered to the Navy on 28 July 1973, Tontogany was attached to the 5th Naval District and operated at Norfolk, Va., where she provided tug and towing services, waterfront fire protection, and pilot assistance.

Late in 1977, she was shifted to the 6th Naval District, Charleston, SC, where she served into October 1979.

Stricken from the Navy List 13 March 2001, ex-Tontogany was sold by Defense Reutilization and Marketing Service (DRMS) 20 November 2001.

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