Sébastien Foucan (born 27 May 1974 in Paris) is a French freerunner of Guadeloupean descent.

He is the founder of freerunning and considered an early developer of parkour. Known for his views on the philosophy of parkour and freerunning, Foucan stresses the need for training in the basics of both for individual safety and to maintain a positive public perception of the activities.

He became known in the United Kingdom after Mike Christie's Channel 4 documentary Jump London in September 2003 and the subsequent documentary Jump Britain. In addition to those programmes, Foucan appeared as Mollaka in the 21st James Bond film Casino Royale. He spent three months in the Bahamas on the film. Foucan appeared in the music video for Madonna's 2005 single "Jump", accompanying the singer on her 2006 "Confessions Tour". He helped K-Swiss develop the Ariake, the first in a line of five freerunning-shoe models. Foucan appeared in a trailer for the game Mirror's Edge.

It was reported on 3 January 2012 that Foucan would be among 15 celebrities in the seventh series of Dancing on Ice. On 19 February he was eliminated in a double Ultimate Skills skate-off with Heidi Range.

Foucan has also won World Chase Tag PRO 2 GO Europe with the team he founded and created, Blacklist. He was the star of the tournament, defeating teams from around the continent. Blacklist also finished 3rd/4th in World Chase Tag 4, mainly due to Foucan.