Three new species of calanoid copepod in the family Aetideidae are described, two inAetideopsisSars, 1903 and the third inBradyidiusGiesbrecht, 1897. OneAetideopsisspecies is from off South West Africa (south‐east Atlantic), the remaining species are from the east coast of New Zealand (south‐west Pacific). The genusPseudaetideusWolfenden, 1904 is merged withAetideopsis.