The Ginetta G40 is a sports car which has been built by Ginetta Cars since 2010. It is available in two versions; a road-going version, named the G40R, and the race version, the G40, which is available in two specifications; one of which is the G40 Challenge, the other is the G40 Junior, which were designed for the Ginetta GT5 Challenge and the Ginetta Junior Championship respectively. The G40 replaced the Ginetta G20 race car, and also replaced the road version of the Ginetta G50.

Ginetta Cars Limited is a British specialist builder of racing and sports cars based in Garforth, Leeds, West Yorkshire.