Hagen is a masculine given name. Bearers of the name include:
Hagen Danner (born 1998), American baseball player Hagen Kearney (born 1991), American snowboarder Hagen Kleinert (born 1941), German theoretical physicist Hagen Kunze (born 1973), German journalist, music critic and playwright Hagen Liebing (1961–2016), German bass player for the punk band Die Ärzte and journalist Hagen von Ortloff (born 1949), German television presenter Hagen Reeck (born 1959), German football manager and former player Hagen Reinhold (born 1978), German politician Hagen Rether (born 1969), Romanian-born German political cabaret artist and musician Hagen Schulte (born 1993), New Zealand rugby union player Hagen Schulze (1943–2014), German historian Hagen Stamm (born 1960), German former water polo player Hagen Stehr (born 1941), German-born Australian businessman
See also Hagan (given name)