Riegel is a German surname. Notable people with the surname include:
Anton Pius Riegel (1789–?), Austrian architect Bill Reigel (1932-1993) American basketball player and coach E.C. Riegel (1879–1953), independent scholar, author and consumer advocate Eden Riegel (born 1981), American actress Ella Riegel (1867 - 1937), American suffragist Franz Riegel (1843–1904), German internist and gastroenterologist Hans Riegel (1923–2013), German entrepreneur Hans Riegel Sr. (1893-1945), German entrepreneur Jan Riegel (born 1980), Czech footballer Jacob Riegel (born 2004), German racing driver Jeffrey K. Riegel (born 1945), American sinologist Peter Riegel (1935–2018), American research engineer who developed a formula for predicting an athlete's race times Sam Riegel (born 1976), American voice actor, writer and director Skee Riegel (1914–2009), American golfer Tatiana S. Riegel, American film editor
See also Riegels (surname) Reuben Reigel's Covered Bridge Alois Riegl