Conus kulkulcan is a species of predatory sea snail, a marine gastropod mollusk in the family Conidae, the cone snails or cone shells.

Like all species within the genus Conus, these snails are venomous and capable of stinging humans. Their name references Kukulkan, a Mayan deity. It can be found in shallow sandy substrates in the western Caribbean and is assessed as least concern by the IUCN.

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