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

Typically found in water on sand or in crevices with a depth of 0 to -6,737 meters (0 to -22,103 feet).

The color of the shell is yellowish brown or ash-color, often with fine close chestnut revolving lines, with large white spots and maculations usually forming an interrupted central band and another at the shoulder.

The shell has a flattish spire, rounded shoulders and several spiral ridges around the base of the body whorl.

[2][1] This species occurs in the Red Sea; in the Indian Ocean off Madagascar, Tanzania, Chagos, Aldabra, the Mascarene Islands; as an alien in the eastern part of the Mediterranean Sea; in the tropical Pacific Ocean and off Polynesia; off Australia (Northern Territory, Queensland and Western Australia]