Hagel is a German surname. Notable people with the surname include:
Brandon Hagel (born 1998), Canadian ice hockey player Catherine Hagel (1894–2008), American supercentenarian Chuck Hagel (born 1946), American politician and Secretary of Defense Frank Hagel (born 1933), American painter and sculptor Glenn Hagel (born 1949), Canadian politician Jenny Hagel, American comedy writer John Hagel III, author and consultant Kyle Hagel (born 1985), Canadian ice hockey player Lawrence Bain Hagel (born 1947), American judge Manuel Hagel (born 1988), German politician Otto Hagel (1909–1973), American photographer and filmmaker
See also Hegel (disambiguation)