Four ships of the United States Navy have been named USS Pittsburgh in honor of Pittsburgh, Pennsylvania.
USS Pittsburgh (1861) (alternately spelled Pittsburg as was CA-4) was a sidewheel ironclad gunboat that served during the American Civil War.USS Pittsburgh (CA-4), originally named USS Pennsylvania (ACR-4), was an armored cruiser serving during World War I.USS Pittsburgh (CA-72), originally named Albany, was a Baltimore-class cruiser that served during World War II.USS Pittsburgh (SSN-720) is a Los Angeles-class submarine on active service as of 2013.