USS Dennis (DE-405) was a John C. Butler-class destroyer escort in the service with the United States Navy from 1944 to 1946.

Returning to the forward area Dennis departed Guam on 16 February 1945 for the invasion of Iwo Jima, patrolling off the island until 8 March, when she sailed to escort a convoy to Ulithi.

On 21 March, she proceeded to join a carrier group launching air strikes in preparation for the invasion of Okinawa.

After the war, she escorted landing craft to Okinawa, then departed Leyte Gulf on 14 October for the west coast, arriving at San Diego, California on 6 November.

In addition to her Presidential Unit Citation, Dennis received four battle stars for World War II service.