Brun Motorsport GmbH was a Swiss auto racing team founded by driver Walter Brun in 1983. They competed as a Porsche privateer team in sports car racing for their entire existence, running in a multitude of international championships. They notably won the World Sportscar Championship in 1986 and later became a full-fledged chassis constructor. Brun was also briefly part of the EuroBrun Formula One team from 1988 to 1990. The team was eventually dissolved in 1992.