Two ships of the United States Navy have borne the name USS Sunfish, named in honor of the ocean sunfish, Mola mola, a plectognath marine fish, having a deep body truncated behind, and high dorsal and anal fins.
- USS Sunfish (SS-281), was a Gato-class submarine, commissioned in 1942 and struck in 1960. She made eleven war patrols in the Pacific during World War II.
- USS Sunfish (SSN-649), was a Sturgeon-class submarine, commissioned in 1969 and struck in 1997.
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.