The SEAT 600 is a car made in Spain by SEAT from May 1957 to August 1973 under licence by Fiat. It helped to start the economic boom, the Spanish miracle (1959–1973), that came at the end of the slow recovery from the Spanish Civil War. It was a relatively inexpensive vehicle (then 60,000 Spanish pesetas) and was the first car that came within the modest but rapidly growing economic means of most Spanish families from the mid-1960s to the early 1970s. The vehicle has become an icon of the period.

The SEAT company was born as a joint venture of the Spanish state holding agency National Institute of Industry, six Spanish banks and Fiat - almost all SEAT models up to 1982 were license-built Fiat based cars although the 1200/1430 Sport "Boca negra" and 133 were models created in-house by SEAT in the 1970s.

Up to 797,319 SEAT 600 and 18,000 SEAT 800 were made until 1973. They were exported to Argentina, Mexico, Poland and Finland. The Fiat version enjoyed far less success in its homeland than the Spanish model, probably because the Italian market was more advanced than the Spanish at the time.

There is a rally version Seat 600D Group 5 in the collection of museum Collecio D'automobils Salvador Claret.