Thierry Marc Boutsen (French: [tjɛ.ʁi but.sɛn]; born 13 July 1957) is a Belgian former racing driver, businessman and motorsport executive, who competed in Formula One from 1983 to 1993. Boutsen won three Formula One Grands Prix across 11 seasons.

Boutsen competed in Formula One for Arrows, Benetton, Williams, Ligier and Jordan. He finished fourth in the 1988 World Drivers' Championship with Benetton. Boutsen also competed in 10 editions of the 24 Hours of Le Mans from 1981 to 1999, finishing runner-up in 1993 and 1996 with Peugeot and Porsche, respectively.

Since retiring from motor racing, Boutsen has moved into the aviation industry, selling business jets from his firm in Monaco. He is also the founder, co-owner and advisor to Boutsen Racing, who have competed in touring car racing since 1998.