Antoine Petit (23 July 1722 – 21 October 1794) was a French physician, master of Joseph-Ignace Guillotin and Félix Vicq d'Azyr.

The professors, engaged and appointed by the University, had to teach for ten years then made way for younger.

He was a member of French Academy of Sciences and wrote several articles for the Diderot and d'Alembert Encyclopédie.

[5] Antoine Petit amassed a significant wealth then, because he had no child, spent a part to found places that accord medical treatment.

He spent more than 100,000 French livres to Orléans city: he appointed four physicians and two surgeons for free health care for sick people and those in every kind of need, in a house he built in this purpose.