Harpa major, common name large harp,[1] or major harp,[2] is a species of large predatory sea snail, a marine gastropod mollusks in the family Harpidae, the harp snails and their allies.

The average adult reaches 3 1/2 inches and the shells have an ovate body with a heavily calloused spire.

The columella, or the lower portion of the inside coil, has dark brown coloring.

A voracious nocturnal predator of benthic crustaceans on sandy bottoms, it can prey on crabs as large as itself.

This marine species occurs off East Africa, Tanzania, Mozambique, the Mascarene Basin; off Hawaii