Hans-Joachim Richard Mass (30 September 1946 - 4 May 2025) was a former driver who competed in Formula One for Surtees, McLaren, ATS, Arrows and March. His only Formula 1 victory was the 1975 Spanish Grand Prix with McLaren and his best Formula 1 championship finish was 6th in 1977. In 1989, he won the 24 Hours of Le Mans alongside Manuel Reuter and Stanley Dickens. In 1990, Jochen Mass took on the role of mentor to the three Mercedes-Benz juniors who would later achieve excellence in their careers: Michael Schumacher, Heinz-Harald Frentzen and Karl Wendlinger.