PSA Peugeot Citroën (officially Peugeot S.A., informally PSA) is a French multinational manufacturer of automobiles and motorcycles sold under the Peugeot and Citroën marques. Headquartered in the 16th arrondissement of Paris, PSA is the second-largest Europe-based automaker (after Volkswagen Group) and the eighth-largest in the world measured by 2010 unit production.

PSA is listed on the Euronext Paris stock exchange and is a constituent of the CAC 40 index.

In December 1974 Peugeot S.A. acquired a 38.2% share of Citroën. On 9 April 1976 they increased their stake of the then bankrupt company to 89.95%, thus creating the PSA Group (where PSA is short for Peugeot Société Anonyme), becoming PSA Peugeot Citroën. Since Citroën had two successful new designs in the market at this time (the GS and CX) and Peugeot was typically prudent in its own finances, the PSA venture was a financial success from 1976 to 1979.

In late 1978, PSA purchased the failing Chrysler Europe (which was formerly Rootes and Simca), from the troubled U.S. parent firm for a nominal USD $1.00, plus assumption of outstanding debt, leading to losses for the consortium from 1980 to 1985. Further investment was required because PSA decided to create a new brand for the entity for the disparate French and British models, based on the Talbot sports car last seen in the 1950s. From then on, the whole Chrysler/Simca range was sold under the Talbot badge until production of Talbot-branded passenger cars was shelved in 1987 and on commercial vehicles in 1992.