Bullia is a genus of sea snails, marine gastropod mollusks in the family Nassariidae, the Nassa mud snails or dog whelks.

The foot is greatly expanded, and bifid behind.

The spire is more or less acuminated, the sutures enamelled.

The inner lip is excavated in the middle, callous posteriorly.

[3] The following subgenera are recognized: Species within the genus Bullia include: Synonyms: