Geoff Brabham (born 20 March 1952) is an Australian racing driver. He is the son of three-time Formula One World Champion Jack Brabham. Brabham spent the majority of his racing career in the United States. He raced successfully in CART early in his career. In ten appearances in the Indianapolis 500, with a best result of fourth in 1983. His greatest source of success was in various forms of sports cars, winning four IMSA GTP titles (1988 - 1991) when racing for Nissan, and one Can-Am championship (1981). He also won the 1993 Le Mans 24 hours, took two race victories in the International Race of Champions (1992 and 1993), both at Michigan. Brabham made his only NASCAR Winston Cup Series start at the first ever Brickyard 400 at Indianapolis in 1994, driving for Michael Kranefuss. Brabham crashed in the second half of the race. He has two younger brothers; Gary and David. Brabham teamed with David to win the 1997 Bathurst 1000 in a BMW. Although the most successful of the second generation of racing Brabhams, unlike his siblings he did not compete in World Championship Formula One.

David Brabham (born 5 September 1965) is an Australian racing driver and one of the most successful and experienced specialists in sports car racing. He has won three international Sports Car series and is one of four Australians to have won the Le Mans 24 Hour sports car race, winning the event in 2009. Brabham is the reigning American Le Mans Series champion and also won the title in 2009. He also competed in Formula One, racing for the Brabham and Simtek teams in 1990 and 1994 respectively. David is the youngest son of three-time Formula One world champion Sir Jack Brabham.

Brabham, who was born in Wimbledon, London, spent his childhood in Australia. Despite his father's motor racing fame he took little interest in motor racing until after he left school. As a child he played the more accessible sport of soccer up until the age of twelve and then took up Australian rules football when the family moved to Sydney. Growing up, Sir Jack did not force David into racing, and it was only after discovering go-karts at 17, that he became enthusiastic enough to purchase a second-hand go-kart with his next-door neighbour and begin racing.

Sir John Arthur "Jack" Brabham, AO, OBE (born 2 April 1926) is an Australian former racing driver who was Formula One champion in 1959, 1960 and 1966. He was a founder of the Brabham racing team and race car constructor that bore his name.

Brabham was a Royal Australian Air Force flight mechanic and ran a small engineering workshop before he started racing midget cars in 1948. His successes in midgets and Australian and New Zealand road racing events led to him going to the United Kingdom to further his racing career. There he became part of the Cooper Car Company's racing team, building as well as racing cars. He contributed to the design of the mid-engined cars that Cooper introduced to Formula One and the Indianapolis 500, and won the Formula One world championship in 1959 and 1960. In 1962 he established his own Brabham marque with fellow Australian Ron Tauranac, which became the largest manufacturer of customer racing cars in the world in the 1960s. In 1966 Brabham became the first - and still the only - man to win the Formula One world championship driving one of his own cars.