Gunnar Nelson is an Icelandic professional MMA fighter, currently competing in the UFC lightweight division. He is a black belt in Brazilian Jiu-Jitsu, which was awarded by Renzo Gracie after impressive results at the 2009 IBJJF Pan-Ams and the 2009 ADCC Submission Wrestling World Championship. Gunnar is a teammate of UFC fighter and former Featherweight and Lightweight Champion Conor McGregor, and is a member of Mjölnir gym in Iceland, and SBG Ireland.