The Jaguar D-Type is a sports racing car produced in between 1954 and 1957. It was designed specifically to win the 24 Hours of Le Mans. It shared the inline XK6 I6 engine and many other mechanical components with its C-Type predecessor. Its structure was different, with a monocoque design and aerodynamics that utilized aircraft technology. 

Engine capacity started at 3.4 litres, increased to 3.8 litres in 1957, and reduced to 3 litres in 1958 when rules limited capacity to that maximum. The cars won Le Mans in 1955, 1956 and 1957. After Jaguar temporarily retired from racing, the company offered unfinished models as road-going versions of the XKSS. According to Jaguar, a total of 75 examples were produced.