USS Rich (DD-820/DDE-820) was a Gearing-class destroyer in the United States Navy during the Korean War and the Vietnam War. She was the second ship named in honor of Lieutenant Ralph McMaster Rich (1916–1942), who was awarded the Navy Cross for his leadership as a naval aviator aboard USS Enterprise during the Battle of Midway.

The Gearing class was a series of 98 destroyers built for the U.S. Navy during and shortly after World War II. The Gearing design was a minor modification of the Allen M. Sumner class, whereby the hull was lengthened by 14 ft (4.3 m) at amidships, which resulted in more fuel storage space and increased the operating range.