| Jean Claude Eugène Péclet | |
| Birth Date: | 10 February 1793 |
| Birth Place: | Besançon, France |
| Death Place: | Paris |
| Known For: | Péclet number Triboelectricity Radiant barrier |
| Work Institutions: | École Centrale Paris École Normale Supérieure |
Jean Claude Eugène Péclet (10 February 1793 – 6 December 1857) was a French physicist.
He was born in Besançon, France.
Péclet became, in 1812, one of the first students of the École Normale in Paris with Gay-Lussac and Dulong being his professors. In 1816, he was elected professor at the Collège de Marseille and taught physical sciences there until 1827. Being nominated maître de conférences (tenured position) at the École Normale Supérieure, he returned to Paris. In 1829, he became a professor of physics at the École Centrale des Arts et Manufactures that was being founded by the businessman Alphonse Lavallée, by Péclet, and by two other scientists, Jean-Baptiste Dumas and Théodore Olivier. His salary was then 3000 Francs per year, plus a share of the profits of this private engineering school. In 1840, Péclet became inspecteur général de l'instruction publique.
The Péclet number is named after him. He was Coriolis's brother-in-law.
He died in Paris.