Nonpareil(s) from the French meaning 'without equal', it may also refer to:
- Nonpareil, Guyana, a village in Guyana
- Nonpareil, Oregon, a former community in the United States
- Nonpareils, a confectionery of small sweet spheres used to decorate cakes, sweets, and pastries
- Jack "Nonpareil" Dempsey (1862–1895), Irish boxer
- HMS Nonpareil, several ships
- Nonpareil, a rag composed by Scott Joplin published in 1907
- Nonpareil, an Al Cohn jazz recording from 1981
The French spelling may also be preserved as Sans Pareil
- Sans Pareil, an early steam locomotive that took part in the Rainhill Trials