Riedel is a German surname. Notable people with the surname include:
August Riedel (Johann Friedrich Ludwig Heinrich August Riedel) (1799–1883), German painterBeau Riedel (born 1975), Canadian-born ice hockey goalieBruce Riedel (born c. 1953), U.S. foreign policy analyst and authorEberhard Riedel (born 1938), German former alpine skierGeorg Riedel (Altstadt Kantor) (1676-1738), German composerGeorg Riedel (Swedish jazz musician) (born 1934), Czech-born Swedish musicianHermann Riedel (1847–1913), German composerKlaus Riedel (1907-1944), German engineerLars Riedel (born 1967), German discus throwerLudwig Riedel (1790-1861), German botanistOliver Riedel (born 1961), German musicianRyszard Riedel (1956-1994), Polish blues singer and author of many songs of group DzemWalter Riedel (1902-1968), German engineer