Radulinus is a genus of marine ray-finned fishes belonging to the family Cottidae, the typical sculpins.

These fishes are found in the eastern Pacific Ocean.

Radulinus was first proposed as a monospecific genus in 1890 by the American ichthyologist Charles Henry Gilbert[1]when he described the slim sculpin (R. asprellus) from waters off the "northwestern U.S.A.".

[2] The 5th edition of Fishes of the World classifies the genus Artediellus within the subfamily Cottinae of the family Cottidae,[3] however, other authors classify the genus within the subfamily Radulininae of the family Psychrolutidae.

[1] There are currently three recognized species in this genus:[4]