Pinnoctopus is a genus of octopuses belonging to the family Octopodidae. It has been considered to be a synonym of Octopus but some authorities treat it as a valid taxon.
Pinnoctopus contains the following valid species:
Pinnoctopus is treated as a synonym of the genus Octopus <small>Cuvier, 1797</small> by some authorities. However, the World Register of Marine Species follows MolluscaBase and treats it as a valid taxon. The type species of the genus, P. cordiformis, is not universally regarded as a valid taxon and has been posited as being synonymous with Enteroctopus zealandicus.