Gunnar Gundersen may refer to:
Gunnar Gundersen (politician) (born 1956), Norwegian politician and Olympic swimmer Gunnar S. Gundersen (1921–1983), Norwegian modernist painter. Gunnar Gundersen (chess player) (1882–1943), Australian chess master Gunnar Bull Gundersen (1929–1993), Norwegian sailor, novelist, playwright and lyricist Gunnar Edvard Gundersen (1927–2017), Norwegian economist, politician and organizational leader