Reichwein is a German surname. Notable people with the surname include:
Georg Reichwein, Sr. (1593–1667), a German-Norwegian military officerGeorg Reichwein (Jr) (1630–1710), a military government officialLeopold Reichwein (1878–1945), German conductor and composerMarcel Reichwein (b. 1986), German footballerAdolf Reichwein (1898–1944)Adolf-Reichwein-Gymnasium (ARG), a grammar school in Heusenstamm, GermanyRosemarie Reichwein (1904–2002), German educator and physiotherapist8684 Reichwein (1992 FO3), a main-belt asteroid discovered on 1992 by F. Borngen