USS Ibex was a steamer acquired by the Union Navy during the American Civil War.

She was to be used as a gunboat by the Navy, although the war ended less than a week (9 April 1865) after she was commissioned.

After being fitted as a gunboat at Mound City, Ibex was ordered to Memphis, Tennessee, for duty with the Mississippi Squadron's 8th District on 29 April 1865.

She served faithfully in the Mississippi River assisting Rear Admiral Samuel Phillips Lee in attending to many of the tasks entailed in closing the Mississippi Squadron.

This article about a specific ship related to the American Civil War is a stub.