Patrick Le Roux (born 3 October 1943, in Morlaix) is a 20th–21st-century French historian.
After he obtained his agrégation d'histoire in 1967, Patrick Le Roux defended his State thesis entitled L'armée romaine et l'organisation des provinces ibériques d'Auguste à l'invasion de 409 in March 1980 at the Bordeaux Montaigne University under the direction of Robert Étienne.
A member of the Casa de Velázquez, he taught Roman history at Paris West University Nanterre La Défense then at Toulouse II, Rennes II and Paris XIII of which he is emeritus professor.
He also took part to excavations in Conimbriga (Portugal) and Baelo Claudia (Province of Cádiz) and more specifically in the civil basilica [fr] of the forum.
Finally, he has contributed to the systematic inclusion of historiographical constructions in research on Roman history.