Lars Gunnar Johnsen (born 2 July 1991) is a Norwegian former footballer.
Johnsen was born in Silsand.
He previously played for Tromsdalen UIL, where he made his debut on 13 April 2009. In winter of 2013, Johnsen got a contract with Tromsø IL.
Johnsen signed for HamKam on 22 December 2018. He retired after the 2020 season.