USS Little Ada (1864) was a steamer captured by the Union Navy during the American Civil War. She was used by the Navy to patrol navigable waterways of the Confederacy to prevent the South from trading with other countries. Little Ada, an iron screw steamer, was built in the Clyde, Scotland; captured and abandoned in the South Santee River 30 March 1864; recaptured at sea by Gettysburg 9 July 1864; purchased by the Union Navy from the Boston Prize Court 18 August 1864; and commissioned at Boston, Massachusetts, 5 October 1864. Acting Master Samuel P. Craft in command.