Sébastien Pourcel (born 11 February 1985) is a French former professional motocross racer. He competed in the Motocross World Championships from 2002 to 2014. Pourcel was born in Martigues, Bouches-du-Rhône. He started international motocross competition in 2002 in the MX2-GP class. In 2007, he moved up to the premier MX1-GP class and finished in a career-high fourth place. He joined his brother Christophe Pourcel on the official Kawasaki GPKR Team, which was started by their father, Roger, and Patrick Gelade.