The Peugeot 406 is a large family car that was produced by French automaker Peugeot between 1995 and 2004. Available in saloon, estate and coupé bodystyles with a choice of petrol or turbodiesel engines, the 406 replaced the Peugeot 405 in Peugeot's lineup, and was itself replaced by the Peugeot 407.

Peugeot is a French brand of automobiles owned by Stellantis. The family business that preceded the current Peugeot companies was founded in 1810, and it is regarded as the oldest car company in the world. On 20 November 1858, Émile Peugeot applied for the lion trademark. Armand Peugeot (1849–1915) built the company's first car steam tricycle. They joined forces with Léon Serpollet in 1886; this was followed in 1890 by an internal combustion car with a Panhard-Daimler engine.