Acanthostracion guineense, the West African cowfish, is a species of marine ray-finned fish belonging to the family Ostraciidae, the boxfishes.

This species is found off the coast of Western Africa in the eastern Atlantic Ocean.

[4] The 5th edition of Fishes of the World classifies the genus Acanthostracion in the within the family Ostraciidae in the suborder Ostracioidea within the order Tetraodontiformes.

[6][3] Acanthostracion guineense has a maximum published total length of 18 cm (7.1 in).

[2] Acanthostracion guineense is found in the Eastern Atlantic Ocean along the coast of Western Africa between Mauritania and Angola.