Riemann is a German surname. Notable people with this surname include the following:

Bernhard Riemann (1826–1866), German mathematician, originator of Riemannian geometry Fritz Riemann (1859–1932), German chess master Fritz Riemann (psychologist) (1902–1979), German psychoanalyst Hugo Riemann (1849–1919), German musicologist Johannes Riemann (1888–1959), German actor Katja Riemann (born 1963), German actress Leopold Reimann (1892–1917), German flying ace Manuel Riemann (born 1988), German football (soccer) player Paula Riemann (born 1993), German actress Solomon Riemann (died c. 1873), Jewish traveller

See also Reimann, a similar surname List of topics named after Bernhard Riemann Riemann (crater), a lunar crater