The Andriyashev's largeheaded sculpin, (Andriashevicottus megacephalus), is a species of sculpin native to the northwestern Pacific Ocean where it is only known from the Kuril Islands. It has been recovered at a depth of 100 metres (330 ft). This species grows to a length of 23.6 centimetres (9.3 in) TL. This species is the only known member of its genus.