The Norway bullhead (Micrenophrys lilljeborgii) is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins.

The Norway bullhead was first formally described as Cottus lilljeborgii in 1875 by the Norwegian zoologist Robert Collett with its type locality given as Hardangerfjord.

[2] The Norway bullhead's generic name, Micrenophrys prefixes miccro, meaning "small" to Enophrys, a related Cottid genus.

[1] This is a benthic species of gravel or shell substrates and algal beds at depths from 0 to 100 m (0 to 328 ft) which is able to tolerate temperatures lower than 0 °C (32 °F).

They spawn in the early Spring laying clumps of demersal eggs on the sea bed which hatch into pelagic larvae.