Dehn is a surname. Some notable people with this surname include:
Adolf Dehn (1895–1968), American lithographer Angelina Dehn (born 1995), Ängie, Swedish singer Günther Dehn (1882–1970), German theologian Lili Dehn (1888–1963), Russian writer Max Dehn (1878–1952), German-American mathematician Megan Dehn (born 1974), now Megan Anderson, Australian netballer Mura Dehn (1905–1987), American filmmaker Olive Dehn (1914–2007), English children's writer and poet Paul Dehn (1912–1976), British screenwriter Raymond Dehn (born 1957), American politician Siegfried Dehn (1777–1858), German musicologist Virginia Dehn (1922–2005), American painter Werner Dehn (1889–1960), German rower
See also Dehne Dehns