Sepiida is an order of ten-armed cephalopods. This order contains the following superfamilies and families:
The bobtail or bottletail squid (order Sepiolida) were previously placed within this order as the suborder Sepiolina (sister to a suborder Sepiina), but they are now understood to form their own distinct order; their exact relationship with the cuttlefish is currently in flux, but they have not been recovered close to Sepiida in recent phylogenetic analyses (see Decapodiformes#Taxonomy).