Dejean is a surname. Notable people with the surname include: Cooper DeJean (born 2003), American football player Louis Dejean (circus owner) (1786–1879), French circus proprietor Louis Dejean (sculptor) (1872–1954), French sculptor and engraver Mike DeJean (born 1970), American baseball player Jean François Aimé Dejean (1749–1824), French army officer and minister of state in the service of the First French Republic and the First French Empire Jean-Luc Déjean (1921–2006), French writer Philippe DeJean (1736–c.1809), judge in Fort Detroit until he was captured during the American Revolution Pierre Charles Dejean (1807–1872), French general and politician Pierre François Marie Auguste Dejean (1780–1845), French entomologist See also Dejean's theorem