Jørgen Magnus Finne-Grønn (30 July 1905 – 3 October 1998) was a Norwegian diplomat. He was born in Kristiania as a son of genealogist Stian Herlofsen Finne-Grønn (1869–1953) and Margrethe Borchgrevink (1873–1963). He was a brother of painter Hans Finne-Grønn and a grandson of Sofie Borchgrevink. 1947 he married Margareta Christiansen, a daughter of businessperson .