Martin Nørman Johansson (born 1983), creatively known as GRiLLGRiLL (stylized as GR†LLGR†LL), is a musician from Copenhagen, Denmark. He is known for pioneering the witch house genre, alongside SALEM, White Ring, and oOoOO, even though he describes his music as down-tempo emo gospel.

Martin began posting his music on MySpace in 2008. In March 2010, Disaro Records released his debut album, an untitled CD-R. In 2011, he released an eponymous EP and then disappeared from the radar for 14 years.

In 2025, GR†LLGR†LL returned with an EP and a handful of singles.