Citroën is a French automobile brand. The "Automobiles Citroën" manufacturing company was founded in 4 June 1919 by André Citroën. Citroën has been owned by Stellantis since 2021 and previously was part of the PSA Group after Peugeot acquired 89.95% share in 1976. Citroën's head office is located in the Stellantis Poissy Plant in Saint-Ouen-sur-Seine since 2021 and its offices studies and research in Vélizy-Villacoublay, Poissy (CEMR), Carrières-sous-Poissy and Sochaux-Montbéliard.

André-Gustave Citroën was a French industrialist and the founder of French automaker Citroën. He is also remembered for his application of double helical gears.