The Gempylidae are a family of scombriform ray-finned fishes commonly known as snake mackerels or escolars. The family includes about 25 species.

They are elongated fishes with a similar appearance to barracudas, having a long dorsal fin, usually with one or finlets trailing it. The largest species, including the snoek (Leionura atun), grow up to 2 m (6 ft 7 in) long, and the oilfish (Ruvettus pretiosus) can reach 3 m (9.8 ft), though they rarely surpass 150 cm (59 in). Like the barracudas, they are predators, with fang-like teeth.

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