USNS Cedar Creek (T-AO-138) was a Suamico-class Fleet Oiler that served both the United States Navy and the Soviet Union from 1943 to 1954.

Cedar Creek was laid down on 20 September 1943, as a Type T2-SE-A1 tanker hull under Maritime Commission contract at Sun Shipbuilding and Drydock Company in Pennsylvania.

On 30 April 1944, she was lent to the Union of Soviet Socialist Republics (USSR) as SS Taganrog under the Lend-Lease Program.

In October 1949, she was assigned to the Military Sea Transportation Service as USNS Cedar Creek (T-AO-138) and continued operations with a civilian crew.

On 28 September 1954, she was placed in the National Defense Reserve Fleet at San Diego, California and remained there until 1 November 1956—after which she was transferred again to the MSTS.