William Seston (2 June 1900 – 2 October 1983) was a 20th-century French historian and epigrapher, a specialist of the history of the Roman Empire.
The son of a Protestant pastor, William Seston was a student of the École Normale Supérieure where he was formed by Jérôme Carcopino.
After teaching in high schools in Nîmes and Marseille, he obtained a position at the University of Strasbourg in 1929.
Called in Montpellier (1941) and Toulouse (1942), he became head of the then newly created division of historical antiquities.
An historian highly attentive to law, he made important contributions to the study of Roman citizenship, particularly through the publication of Tabula Banasitana.