Renault S.A. is a French vehicle manufacturer producing small to upper-midsize cars, vans, buses, tractors and trucks.

When its cars were imported to and sold in the United States during the 1950s and 1960s, it was decided to pronounce the name as "Ren-ALT" in marketing to the American public, and the Anglicized pronunciation continues in common usage. However, Renault is correctly pronounced "Rhen-oh" (as it is commonly in the UK).

The government of France owns 15.7 per cent of the company. Louis Schweitzer has been the Chairman of Renault since 1992 and CEO from 1992 to 2005. In 2005, Carlos Ghosn (also CEO of Nissan) has become Renault's CEO, Louis Schweitzer staying Chairman.

Renault has a stake of 44.4 per cent in Japanese automaker Nissan together with which they form the Renault-Nissan Alliance. Nissan in turn took a 15 per cent stake in Renault in 2002. Renault also owns Samsung Motors (Renault Samsung Motors) and Dacia, as well as retaining a minority stake (20%) in Volvo Trucks.

In 2004, Renault was the fifth most popular car maker in Britain behind the Ford Motor Company, Vauxhall Motors, Peugeot and Volkswagen. The most popular French car in Britain is currently the Renault Clio, which has been a strong seller throughout Europe since its launch 14 years ago.

For 2004 Renault reported a 43% rise in net income to €3.5 billion and 5.9% operating margin, of which Nissan contributed €1,767 million. The Group (Renault, Dacia, Renault Samsung Motors) posted a 4.2% increase in worldwide sales to a record 2,489,401 vehicles, representing a global market share of 4.1%. Renault retained its position as the leading brand in Europe with 1.8 million passenger cars and light commercial vehicles sold and market share of 10.8%.

Renault, together with associated brands Dacia and Renault Samsung, aims to sell 4 million vehicles worldwide in 2010.