Gustav Brunner (born 12 September 1950, in Graz) is an Austrian Formula One (F1) designer and engineer. He started his career in racing car design at the German-based constructor McNamara. He first entered F1 in a brief spell working for the ATS team in 1978, before designing cars for Formula Two and sportscar racing. He came to prominence in Formula One in 1983, by returning to ATS. He designed two chassis for the team, the 1983 D6 and the 1984 D7, before quitting after a number of arguments with team principal Günter Schmid. In 1985 he joined RAM Racing, designing the RAM 03 car. By this time he was gaining a reputation within the sport for designing good chassis on a limited budget, even if the teams he had worked for had a conspicuous lack of results.