USS Plumas County (LST-1083) was an LST-542-class tank landing ship in the United States Navy. Unlike many of her class, which received only numbers and were disposed of after World War II, she survived long enough to be named. On 1 July 1955, all LSTs still in commission were named for US counties or parishes; LST-1083 was given the name Plumas County, after Plumas County, California. She was the first LST to drop anchor in Japanese waters after the atom bomb was dropped, and was present at the signing of the Japanese surrender.