The Logan is a low-cost compact automobile produced jointly by the French manufacturer Renault and its affiliate Dacia of Romania. The car is intended for sale in developing countries where the population has a lower purchasing power than in developed countries. It was launched in 2004 as the Dacia Logan and will also be sold as the Renault Logan in Russia and in various other markets. Renault originally had no plans to sell Logan in Western Europe, but began importing a more expensive version of the car in June 2005.

The Logan is the end result of Project X90, announced by Renault in 1999 after the buy-out of Dacia in 1998. During a visit to Russia by French President Jacques Chirac, Louis Schweitzer noted that at Lada and Renault dealerships the €6,000 Ladas were selling like hot cakes, while the €12,000 Renaults stayed in the showroom. "Seeing those antiquated cars, I found it unacceptable that technical progress should stop you making a good car for €6,000." (He later revised this target to €5,000.) However, the cheapest version of the car is priced almost €6,000, and can reach €8,500, depending on equipment and customs duty. It is based on the B platform that is used by the 3rd-generation Renault Clio, Renault Modus and the latest version of the Nissan Micra.

The car replaces many older cars in production, including the Romanian Dacia 1300 series of Renault 12-based cars and Iran's Hillman Hunter-based Paykan. Production is initially of a 4 door sedan, although hatchback and wagon versions are due to follow. Initial production is in Romania, but the car will also be built in Russia, Iran, Colombia, Morocco, India, and South America. Whether or not the car is badged Dacia or Renault in certain markets depends on the existing presence of the Renault marque in the countries in question. In markets where Renault has a limited presence, like Russia, it will be sold as a Renault. On other markets, like Morocco, the Logan will allow Dacia to make itself known. In June 2005 the car achieved a 3 star rating at the EuroNCAP crash tests. This result confirms initial expectations stated earlier by Renault. Dacia Logan production for 2005 is estimated to be around 150,000 cars