Sébastien Olivier Bourdais (born February 28, 1979 in Le Mans) is a French Formula One race car driver. He is one of the most successful drivers in the history of the Champ Car World Series, having won four successive championships from 2004 to 2007.
Born into a racing family (his father Patrick races in touring cars, hill climbs, and sports cars), Bourdais began his racing career at age 10 in karts. During the early 1990s, he competed in a variety of karting championships, winning the Maine Bretagne League in 1991 and the Cadet France championship in 1993. Bourdais was part of the winning Sologne Karting team which won the 1996 24 hour Le Mans kart race at the Circuit Alain Prost on a Merlin chassis with Atomic motors.
Bourdais progressed to single-seater racing in 1995, finishing 9th in the Formula Campus Championship. He then spent two years in the French Formula Renault Championship, ultimately finishing second in points in 1997 after winning four races and five pole positions. In 1998, he won five races to become Rookie of the Year (6th overall) in French F3. He won the series outright in 1999, with eight wins and three poles.