Eirik Ildahl (born 19 June 1957) is a Norwegian comics writer, scriptwriter, playwright and novelist. He was born in Hamar.
Among his comics series is Sirkus from 1980 onwards (with co-writer Terje Nordberg and illustrator Arild Midthun), and the trilogy Solruns saga with illustrator Bjørn Ousland. He was awarded the Sproing Award in 1990, for the album Solruns saga 2: Nattlys, along with Bjørn Ousland.
He was scriptwriter for the television series Hotel Cæsar, and for the films Blackout from 1986, and Hodet over vannet from 1993.