USS Augusta (CL/CA-31) was a Northampton-class cruiser of the United States Navy, notable for service as a headquarters ship during Operation Torch, Operation Overlord, and Operation Dragoon, and for her occasional use as a presidential flagship carrying both Franklin D. Roosevelt and Harry S. Truman under wartime conditions. She was named after Augusta, Georgia, and was sponsored by Miss Evelyn McDaniel of that city.

The Northampton-class cruisers were a group of six heavy cruisers built for the United States Navy, and commissioned between 1928 and 1931.