The Citroën C2 is a supermini that was produced by the French manufacturer Citroën, with production starting August 2003. It replaced the Citroën Saxo and was built at the Aulnay plant, on the outskirts of Paris. The Citroën C2 was discontinued in October 2009, and replaced by the Citroën DS3 in January 2010.

Along with the Citroën C3, the C2 successfully replaced the popular, but ageing Citroën Saxo. The two cars have relatively different designs however retain the same dashboard, allowing Citroën to grab different submarkets of the supermini class. The C2 was designed by Donato Coco. The C3 was originally designed as a larger "family-friendly vehicle", with its five doors, whereas the C2 was to project a "young driver" image with two doors and flatter styling.

Unlike the Saxo, with 2 of 5 stars from Euro NCAP, the C2 achieved 4 out of 5 stars.