Ferdinand Chalandon (Lyon, February 10, 1875 – October 31, 1921, Lausanne, Switzerland) was a French medievalist and Byzantinist.

Chalandon’s work remains the most substantial study of the Normans in Italy and though the details of what he wrote a hundred years ago have in places been modified, it remains the single most important work available to historians.

Being a former member of the École française de Rome, Ferdinand Chalandon was a winner of the Grand Prix Gobert in 1909.

Publications

• Essai sur le règne d'Alexis Ier Comnène (1081-1118). Paris : A. Picard. 1900

• La diplomatique des Normands de Sicile et de l'Italie méridionale. Mélanges d'archéologie et d'histoire de l'École française de Rome, 1900

• Numismatique des Normands en Sicile, 1903

• Histoire de la domination normande en Italie et en Sicile. Paris : A. Picard. 1907

• Jean II Comnène, 1118-1143, et Manuel I Comnène, 1143-1180. Paris. 1912

• Histoire de la Première Croisade jusqu'à l'élection de Godefroi de Bouillon