Pierre Toubert (29 November 1932 – 5 June 2025) was a French historian. He was a professor of medieval history at the University of Paris and the Collège de France. Focusing on medieval history, his most monumental work is ''Les structures du Latium médiéval : Le Latium méridional et la Sabine du IXe siècle à la fin du XIIe siècle'' (1973), in which he outlines an influential, in-depth study of ''incastellamento'' (in English, encastellation) in the Lazio region of Italy.
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