Conus stupella, commonly named the stupella cone, is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

Like many other cone snails, Conus stupella uses a venom-loaded harpoon-like radular tooth to immobilise its prey, and though there are no specific records of human injury from this species, the general danger posed by cone-snail venom means specimens should always be treated as potentially harmful.

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