Leucozonia nassa, common name: the chestnut nassa, is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.

[1] The shell size varies between 22 mm and 68 mm.

This species is distributed in the Gulf of Mexico, the Caribbean Sea and the Lesser Antilles; in the Atlantic Ocean it is distributed from North Carolina to Central Brazil.