Johannes Antonius "Jan" Lammers is a Dutch racecar driver, most notable for winning the 1988 24 Hours of Le Mans world endurance race, for Silk Cut Jaguar/TWR; after four seasons in Formula One racing, from 1979 through 1982, for the F1 teams of Shadow, ATS, Ensign and Theodore, respectively. After a world-record setting ten-year hiatus, Lammers made a brief Formula One comeback, for two races, with team March in 1992. Aside from racing in these two of the highest leagues of global auto-sports, Lammers has raced in an exceptionally wide number of racing series and competitions, domestic and abroad, over four decades.

The 1988 24 Hours of Le Mans was the 56th Grand Prix of Endurance as well as the fifth round of the 1988 World Sports-Prototype Championship. It took place at the Circuit de la Sarthe, France, on the 11 and 12 June 1988. At their third attempt, Jaguar arrived with five cars to take on the strong Porsche works team of three cars, in their only race for the Championship season. The other potential rival was Sauber, now formally backed by Mercedes-Benz, but after a major high-speed tyre-blowout in practice, their two-car team was withdrawn.