Two boats of the United States Navy have borne the name USS Hammerhead, named in honor of the hammerhead shark, a voracious shark, found in warm seas, with a curious hammerlike head.
- USS Hammerhead (SS-364), was a Gato-class submarine, commissioned in 1944
- USS Hammerhead (SSN-663), was a Sturgeon-class submarine, commissioned in 1968 and struck in 1995
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.