The USS Fawn was a steamer purchased by the Union Navy during the American Civil War. She was used by the Union Navy as a patrol and escort vessel, operating in Confederate waterways. Fawn, a stern wheel steamer, was launched in 1863 at Cincinnati, Ohio, as Fanny Barker. She was commissioned 11 May 1863 and purchased by the Navy 13 May 1863, Acting Master J. R. Grace in command. She was renamed Fawn 19 June 1863.