Rafn is a Danish and Norwegian surname. Notable people with the surname include:
Aage Rafn (1890–1953), Danish architect Carl Christian Rafn (1795–1864), Danish historian, translator, and antiquarian Carl Gottlob Rafn (1769–1808), Danish scientist and civil servant Caspar Conrad Rafn (1763–1830), Dano-Norwegian politician Hardy Rafn (1930–1997), Danish actor Lina Rafn (born 1976), Danish singer, songwriter, and producer Robert Rafn (1878–1964), Norwegian businessman and politician Simen Rafn (born 1992), Norwegian footballer