The Pawcatuck River is a river in the US states of Rhode Island and Connecticut flowing approximately 34 miles (55 km). There are eight dams along the river's length. USS Pawcatuck was named after the river.

USS Pawcatuck (AO-108) was a T3 Ashtabula class replenishment oiler tanker that served in the U.S. Navy from 1946 to 1975, then transferred to the Military Sealift Command to continue in non-commissioned service with a civilian crew as United States Naval Ship USNS Pawcatuck (T-AO-108). She was the only United States Navy ship to bear the name Pawcatuck.