The Amilcar CGS Grand Sport was a popular inter war lightweight sports car, manufactured by the French automobile maker Amilcar between 1923 and 1925.

A response to the successful Salmson VAL3 series, the "C Grand Sport" was developed from the Amilcar C.[1] The CGS had a longer, more rigid chassis, and improved brakes in addition to its bigger engine.

Its 1,074cc, 30 bhp, side valve engine with an aluminium head gave it a listed top speed of at least 120 km/h (75 mph), and could be tuned for better performance.

[1] A single CGS was entered as a works car at the 1924 24 Hours of Le Mans.

A single CGS was entered as a works car at the 1925 24 Hours of Le Mans.