Idiosepiidae, also known as the pygmy squids, is a family of squids in the superorder Decapodiformes. They are the smallest known squids.

It is the only family in the monotypic order Idiosepida and the monotypic superfamily Idiosepioidea. Phylogenomic analyses have shown that species in the family Idiosepiidae are sister to all other Decapodiformes.

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