USS Coeur de Lion was an armed side-wheeled steamer acquired by the Union Navy during the American Civil War.

Enforcing the blockade, Coeur de Lion captured the schooners Emily Murray off Machodoc Creek, Virginia, 9 February 1863, and Robert Knowles 16 September 1863, and Malinda 3 June 1864, in the Potomac.

During a reconnaissance up the Nansemond River, she exchanged fire with enemy batteries on 17 and 19 April 1863, taking the surrender of one of these on the 19th.

Arriving at Washington Navy Yard 15 May 1865, Coeur de Lion was decommissioned 2 June 1865 and returned to the Lighthouse Board the following day.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.