CSS Fanny was a small propeller-driven steam tug used by the Confederate States Navy to defend the sounds of northeastern North Carolina in the American Civil War.

Originally armed as a gunboat and operated by the Union, she was captured in October 1861 by the Confederate Navy, and later lost at the Battle of Elizabeth City in February 1862.

At some later time Fanny was commanded by a Lieutenant Crosby and reported the capture of the blockade runner Mary Emma at the headwaters of the Manokin River in Maryland.

The Fanny spent the next four months patrolling Pamlico Sound, reconnoitering Hatteras Inlet, and towing supply schooners to Roanoke Island.

The Fanny eventually retreated to Elizabeth City with the other surviving members of its gunboat squadron when ammunition supplies ran low.

[3][6] A Naval Historical Foundation web page notes that the weapon has an erroneous inscription stating that it was captured from the CSS Louisiana.