Rieger is a surname. Notable people with the surname include:
Bernhard Rieger, German Prelate of the Roman Catholic Church
Durhane Wong-Rieger, Canadian physician
František Ladislav Rieger, Czech politician and leader of nationalist movement
Fritz Rieger, German conductor
James E. Rieger, American lawyer and US Army officer
Joerg Rieger (born 1963), American professor
Jürgen Rieger, German lawyer and Holocaust denier
Ladislav Svante Rieger, Czech mathematician
Nicole Rieger, German pole-vaulter
Sabine Günther née Rieger, East German athlete
Silvia Rieger, German athlete
Michael Steven Reiger, Regional Vice President Quicken Loans
