Four ships of the United States Navy have been named USS Pittsburgh in honor of Pittsburgh, Pennsylvania.
- USS Pittsburgh (1861) (usually misspelled Pittsburg) 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) was a Los Angeles-class submarine on active service as of 2012.