Pierre Langlois

Pierre Langlois may refer to:


 * Pierre Langlois (economist), Canadian economist and political strategist
 * Pierre Langlois (canoeist) (born 1958), French sprint canoer
 * Pierre Langlois (philatelist) (1909–1990), French chemist
 * Pierre Langlois (politician) (1750–1830), politician in Lower Canada