Cancellariidae, common name the nutmeg snails or nutmeg shells, are a family of small to medium-large sea snails, marine gastropod mollusks in the clade Neogastropoda. Some of the shells of the species in this family resemble a nutmeg seed.
Cancellariidae is the only family in the superfamily Cancellarioidea.
This family occurs worldwide. Many species are found in deep water.