The Peugeot 504 is a mid-size, front-engine, rear-wheel-drive automobile manufactured and marketed by Peugeot from 1968 to 1983 over a single generation, primarily in four-door sedan and wagon configurations – but also as twin two-door coupé and cabriolet configurations as well as pickup truck variants.

The sedan/berline was styled by Aldo Brovarone of Pininfarina, and the coupé and cabriolet twins were styled by Franco Martinengo at Pininfarina, with sketches produced in-house at Peugeot.

The 504 was noted for its robust body structure, long suspension travel, high ground clearance and torque tube drive shaft – enclosed in a rigid tube attached at each end to the gearbox housing and differential casing, relieving drive train torque reactions. The 504 ultimately achieved widespread popularity in far-flung rough-terrain countries – including Brazil, Argentina, Australia, Ivory Coast, Ghana, Cameroon, Benin, Kenya and Nigeria.

More than three million 504s were manufactured in its European production, with production continuing globally under various licensing arrangements – including 27,000 assembled in Kenya and 425,000 assembled in Nigeria, using knock-down kits – with production extending into 2006.

Having debuted as Peugeot's flagship at the 1968 Paris Salon, the 504 received the 1969 European Car of the Year. In 2013, the Los Angeles Times called it "Africa's workhorse.