The humpback smooth-hound (Mustelus whitneyi) is a houndshark of the family Triakidae. It is found on the continental shelves of the tropical southeast Pacific, from Peru to southern Chile, between latitudes 3° S and 54° S, at depths between 15 and 210 metres (50 and 690 ft). Its conservation status is considered to be "vulnerable" by the IUCN.