Saccopharynx is a genus of deep-sea eel-like fishes with large mouths, distensible stomachs and long, scaleless bodies. It is the only genus in the family Saccopharyngidae. The name is from Latin saccus meaning "sack" and Greek φάρυγξ, pharynx. Like other saccopharyngiforms, fishes in this genus are known as gulpers or gulper eels.