Koppen

Koppen is a surname. Notable people with the surname include: Dan Koppen (born 1979), American football offensive lineman Erwin Koppen (1929–1990), German literary scholar Luise Koppen (1855–1922), German author Wladimir Köppen (1846–1940), climatologist Köppen climate classification, developed by Wladimir Köppen Otto C. Koppen (1901–1991), American aircraft engineer