The AMX Tracteur C was a super-heavy tank designed by Ateliers de construction d'Issy-les-Moulineaux(AMX).
In 1939, the French Army initiated a project for a “Fortress Tank” with large calibre gun intended to break through the Siegfried Line of Germany. AMX and Forges et Chantiers de la Méditerranée(FCM) company took part in this project. The AMX company designed the AMX Tracteur C while the FCM company designed the FCM F1. The name “Tracteur C” was used to conceal the true purpose of the project.