Favartia hidalgoi, common namer : the Hidalgo's Murex, is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
The shell size varies between 22 mm and 38 mm
This species occurs in the deeper waters of the Gulf of Mexico and in the Atlantic Ocean from North Carolina to Southern Brazil, including the Antilles and Barbados.