Billfish — A name applied to several distinct fishes
Billfish — The garfish (Tylosurus, / Belone, longirostris) and allied species.
Billfish — The saury, a slender fish of the Atlantic coast (Scomberesox saurus).
Billfish — The Tetrapturus albidus, a large oceanic species related to the swordfish; the spearfish.
Billfish — The American fresh-water garpike (Lepidosteus osseus).