List of Famous people born in Île-de-France, France

Charles O'Brien,, 6th Viscount Clare was an Irish military officer in French service, known to posterity as the Maréchal de Thomond.

Chevalier Louis de Jaucourt was a French scholar and the most prolific contributor to the Encyclopédie. He wrote about 18,000 articles on subjects including physiology, chemistry, botany, pathology, and political history, or about 25% of the entire encyclopaedia, all done voluntarily. In the generations after the Encyclopédie's, mainly due to his aristocratic background, his legacy was largely overshadowed by the more bohemian Denis Diderot, Jean-Jacques Rousseau and others, but by the mid-20th century more scholarly attention was being paid to him.

Philippe Levillain was a French historian and academic. He specialized in the history of Catholicism and the papacy and notably wrote a historic encyclopedia of the papacy.