Riess or Rieß is a German surname. Notable people with the surname include:Adam Riess (contemporary), American astrophysicist Erwin Riess, Austrian playwright Fritz Riess (1922–1991), German Formula One race car driver Peter Riess (1804-1883), German Jewish physicist L. W. Riess (1887–1946), American college sports coach Ludwig Riess (1861–1928), German-American historian and educator Ryan Riess, American professional poker player and 2013 World Series of Poker Main Event champion Stefan Rieß, German professional football player Susanne Riess-Passer, Austrian politician
