Riegel may refer to:
- Riegel (glacial), German term that describes traverse ridges of bedrock that have been exposed by glacial erosion
- Riegel am Kaiserstuhl, German municipality in the district of Emmendingen in Baden-Württemberg
- Anton Pius Riegel (1789-?), an Austrian architect of the 19th century
- E.C. Riegel (1879 - 1953), an independent scholar, author and consumer advocate
- Eden Riegel (born 1981), an American actress
- Franz Riegel (1843 - August 26, 1904) was a German internist and gastroenterologist
- Hans Riegel (born 1923), a German entrepreneur
- Sam Riegel (born 1976), an American voice actor, writer and director
- Skee Riegel (1914 – 2009), an American professional golfer
- Tatiana S. Riegel, an award-winning American film editor