USS Sister (SP-822) was a United States Navy tug in commission from 1917 to 1919.

Sister was built as a small commercial steam tug of the same name in 1882.

She was assigned the section patrol number 822 and commissioned as USS Sister (SP-822) on 11 June 1917.

Assigned to the 8th Naval District, Sister served as a tug and freight boat for the rest of World War I and into 1919.

Sister was stricken from the Navy List on 17 June 1919 and sold to Armond Mayville of Algiers, Louisiana, on either 10 March[4] or 3 October[5] 1920