USS Gamage was a large steamer acquired by the Union Navy during the last months of the American Civil War.

She was commissioned at Mound City, Illinois, 23 March 1865, Acting Master William Neil in command.

W. E. Fitzhugh was accompanied by Army steamer Ida May, carrying Major General F. J. Herron and his staff.

There he seized the steamer Cotton and supplies at the Navy storehouse and on the 8th departed for the mouth of the river.

At the request of General Herron, Gamage remained at Alexandria, Louisiana, to assist the Army as needed until 27 June when she departed for Natchez, Mississippi, arriving 7 July.