Martin Ernstsen is a comic artist and illustrator based i Oslo, Norway.

He has published several comic albums with Jippi comics, and children's book with Cappelen Damm. Some of his books have been translated to Danish, Polish, Finnish, and Swedish, along with the Norwegian versions. Currently he is working on a comic book adaptation of Knut Hamsun's novel "Hunger" from 1890. It will be published in Norway by Minuskel and in Germany by Avant Verlag sometime in 2019.