USS DeKalb County (LST-715) was an LST-542-class tank landing ship built for the United States Navy during World War II.

Jack Greenberg (1924-2016), who was later to become the primary lawyer of the American civil rights movement, served as a lieutenant junior grade (USN) on the DeKalb County, fighting at both Iwo Jima and Okinawa.

It was transferred to the Military Sea Transportation Service (MSTS) in December 1965 where it served as USNS DeKalb County (T-LST-715).

Placed out of service and again struck from the Naval Register on 1 November 1973, custody was transferred to the United States Maritime Administration (MARAD) for lay up in the National Defense Reserve Fleet at Suisun Bay, California.

The ship was disposed of by MARAD on 30 April 1984 to Jon M. Associates, Suisun Bay, Benicia, California for scrapping.