Rieger is a surname. Notable people with the surname include:
August Rieger, Austrian screenwriter and director Bernhard Rieger, German Prelate of the Roman Catholic Church Durhane Wong-Rieger, Canadian physician Eric Rieger, American artist Erich Rieger, German astrophysicist Eva Rieger, German musicologist František Ladislav Rieger, Czech politician and leader of nationalist movement Franz Rieger (1895–1965), German painter Franz Rieger (writer) (1923–2005), Austrian writer Fritz Rieger, German conductor Gottfried Rieger (1764–1855), Austrian composer Heinrich Rieger, Austrian dentist and art collector James E. Rieger, American lawyer and US Army officer Janusz Rieger, Polish linguist Joerg Rieger (born 1963), American professor Joy Rieger, Israeli actress Jürgen Rieger, German lawyer and Holocaust denier Ladislav Svante Rieger, Czech mathematician Lukas Rieger (born 1999), German singer Marc Oliver Rieger, German mathematician Max Rieger (skier) (born 1946), German alpine skier Max Rieger (musician) (born 1993), German singer-songwriter, musician and producer Nicole Rieger, German pole-vaulter Paul Rieger, New Zealand politician Reinhard Rieger, Austrian zoologist Renate Wagner-Rieger, Austrian art historian Sabine Günther née Rieger, East German athlete Silvia Rieger, German athlete Wendy Rieger, American journalist and actress William Rieger, American politician
See also De Reiger, Nijetrijne, a smock mill in Nijetrijne, Friesland, Netherlands De Dans van de Reiger, a 1966 Dutch film Rieger Orgelbau, Austrian organ-building firm Rieger–Kloss, Czech organ-building firm Rieger Tuning, automobile tuning specialist and bodykit manufacturer