Muricanthus ambiguus is a species of sea snail, a marine gastropod mollusc in the family Muricidae, the murex snails or rock snails.^[1]

This marine species occurs in the Central and southern Gulf of California to the Pearl Islands, Panama.

• Reeve, L. A. (1845-1849). Monograph of the genus Murex. In: Conchologia Iconica: or, illustrations of the shells of molluscous animals, vol. 3, pls 1-37 and unpaginated text. L. Reeve & Co., London.