Conus cinereus, common name the sunburnt cone, is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

The species Conus cinereus Schröter, 1803 is a nomen dubium.

The shell is cylindrically ovate, with a moderate, smooth spire.

The shell is clouded with olivaceous, ashy blue and chestnut-brown, with revolving lines articulated of chestnut and white spots.

[4] This species occurs in the Western Pacific Ocean from Japan to Indonesia.