Jean d'Arcet or Jean Darcet (7 September 1724 – 12 February 1801) was a French chemist, and director of the porcelain works at Sèvres.

Darcet was probably born in Doazit, where his family resided, but was baptised in Audignon.

In 1774 he was appointed professor of chemistry in the Collège de France and in 1795 he became a member of the Institute.

His publications include: Sur l'action d'un feu égal sur un grand nombre de terres (1766–71); Expériences sur plusieurs diamants et pierres précieuses (1772); Rapport sur l'electricité dans les maladies nerveuses (1783).

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