Conasprella emarginata is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.
Like all species within the genus Conasprella, these cone snails are predatory and venomous. They are capable of "stinging" humans, therefore live ones should be handled carefully or not at all.
The size of the shell varies between 34 mm and 70 mm.
Bahía Magdalena, Baja California Sur, through most of Golfo de California, Mexico. South to Peru. It has also been reported from Islas Galapagos.
