Riedel is a German surname. Notable people with the surname include:

Adolph Friedrich Johann Riedel (1809–1872), German industrialist and politician August Riedel (Johann Friedrich Ludwig Heinrich August Riedel) (1799–1883), German painter Bruce Riedel (born 1953), U.S. foreign policy analyst and author Eberhard Riedel (1938–2026), German alpine skier Georg Riedel (Altstadt Kantor) (1676–1738), German composer Georg Riedel (jazz musician) (1934–2024), Czech-born Swedish musician Hermann Riedel (1847–1913), German composer Jan Riedel (born 1982), German politician Jesse Riedel (born 1999), American YouTuber Johan Gerard Friedrich Riedel (1832–1911), Dutch East Indies politician and anthropologist Johann Friedrich Riedel (1798–1860), German missionary Klaus Riedel (1907–1944), German engineer Lars Riedel (born 1967), German discus thrower Ludwig Riedel (1790–1861), German botanist Oliver Riedel (born 1971), German musician Ryszard Riedel (1956–1994), Polish blues singer and author of many songs of group Dzem Walter Riedel (1902–1968), German engineer Antje Göhler (born Riedel, 1967), German chess master and writer

See also Riedel's thyroiditis, a disease Riedel (glass manufacturer) Riedel Communications, A company for real-time networks for video, audio, data and communications. Riedel (crater), a Moon crater