Two ships of the United States Navy have borne the name USS Trigger, named in honor of the triggerfish, any of numerous deep-bodied fishes of warm seas having an anterior dorsal fin with two or three stout erectile spines.
- The first USS Trigger (SS-237) was a Gato-class submarine commissioned in 1942 and sunk in 1945.
- The second USS Trigger (SS-564) was a Tang-class submarine, commissioned in 1952, stricken in 1973 and sold to Italy.
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.