The AMC 35, also known under a manufacturer's designation Renault ACG-1, was a French medium cavalry tank of the later Interwar era that served in the Second World War. It was developed as a result of the change of the specification that had led to the design of the AMC 34, calling for a vehicle that was not only well-armed and mobile but also well-armoured. Due to technological and financial problems production was delayed and limited. The AMC 35 was one of the few French tanks of the period featuring a two-man turret.

French development into tanks began during World War I as an effort to overcome the stalemate of trench warfare, and largely at the initiative of the manufacturers. The Schneider CA1 was the first tank produced by France, and 400 units were built. The French also experimented with various tank designs, such as the Frot-Laffly landship, Boirault machine and Souain experiment. Another 400 Saint-Chamond tanks were manufactured from April 1917 to July 1918 but they were underpowered and were of limited utility because the caterpillar tracks were too short for the tank's length and weight. The most significant French tank development during the war was the Renault FT light tank, which set the general layout for future tank designs and was used or redesigned by various military forces, including those of the United States.