Sailfish is the common name for fish of the genus Istiophorus.
Sailfish may also refer to:
Technology Sailfish OS, a mobile operating system Sailfish Alliance, an open alliance for Sailfish OS Pixel (1st generation) (codename Sailfish), a smartphone by Google
Ships and boats Sailfish (sailboat), a board-boat style of sailing dinghy Sailfish-class submarine, a US class of submarine built for radar picket USS Sailfish (SS-192), a US submarine in commission in 1939 and again from 1940 to 1945 USS Sailfish (SSR-572), a US submarine in commission from 1956 to 1978