Conus granulatus 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 Conus, these snails are predatory and venomous. They are capable of stinging humans, therefore live ones should be handled carefully or not at all.

Distribution This species occurs in the Western Atlantic, at depths to 50 metres, and in the Caribbean Sea and in the Gulf of Mexico.

Description The maximum recorded shell length is 64.1 mm. Shell fragments are known that would suggest a maximum size around 77 mm. The shell is regularly grooved throughout the body whorl, with the interstices plane or granular. The spire is striate, often gradate. The color is orange-red, raised portions with very narrow chestnut revolving lines, white clouded, especially in the middle, forming an irregular band, which is mottled and bordered with chestnut. The interior of the aperture is rosy.