USS Lilian was a large 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.
Lilian, an iron wide-wheel steamer built on the Clyde River, Scotland, in 1863, was captured some 100 miles east of Cape Fear, North Carolina, 24 August 1864 by and other Union ships. Among the prisoners were five Wilmington, North Carolina, pilots being carried to Bermuda to guide Confederate ships through the blockade. Purchased by the Navy from the Philadelphia, Pennsylvania, Prize Court 6 September 1864, she was commissioned 6 October at the Philadelphia Navy Yard, Acting Volunteer Lt. T. A. Harris in command.
Lilian joined the fleet attacking Fort Fisher, Cape Fear River, 23 to 24 December 1864 and 13 to 14 January 1865. She landed troops above the fort on the 13th, and then bombarded it. After this attack, she patrolled the inlet, and with captured the British steamer Blenheim 25 January.
She decommissioned 5 April 1865 and was sold at public auction at New York City 30 November 1865. Documented 8 October 1866, Lilian operated in merchant service until 1868.