Seacat or SeaCat may refer to:
Seacat missile, a short-range surface-to-air missile system SeaCat (1992–2004), ferry company formerly operating from between Northern Ireland, Scotland and England The Sea-Cat, an imaginary monster from Flann O'Brien's novel An Béal Bocht Atlantic wolffish Sandra Seacat (born 1936), American actress and acting coach SeaCat Tasmania, former name of the ferry HSC Sea Speed Jet Sea Cat, a Dungeons & Dragons monster. Ariidae, a family of catfish sometimes called "sea cat" or "sea catfish". Black-tailed gull, a family of gulls sometimes called umineko ("sea cat" in Japanese) due to their cat-like calls. Umineko When They Cry, a visual novel often nicknamed "seacats" by fans due to the name (which refers to the black-tailed gull).