Saturn is a division of the General Motors automobile manufacturer and a brand of automobiles. GM began manufacturing Saturn automobiles in 1990, largely in response to the success of Japanese small-car imports in the United States. Saturn vehicles are marketed in the United States, Canada, and Puerto Rico.

Its motto was "A different kind of company, a different kind of car". Not only would it copy Japanese car style, it would try to copy Japanese management style: workers would have more control and involvement in the plant, the UAW agreed to lay off the Saturn division, and in general things were 'done differently' than they had been at GM. Saturn inspired a cult following with annual 'meetings' in Tennessee of Saturn owners. However, the division never made a profit and by the 2000s was a several billion dollar loss for General Motors, which due to its massive financial problems closed the 'experiment' and folded Saturn back into its traditional corporate landscape.

Saturn's headquarters and primary manufacturing facility are located in Spring Hill, Tennessee, which was chosen in 1985, after a highly publicized nationwide search for a site. Since 2005, Jill Lajdziak has been the General Manager of Saturn.

Saturn is known for its company-wide "no-haggle" sale policy. Saturn dealers (called "retailers" by the company) are encouraged to sell vehicles at list price. Customer satisfaction with dealer service is among the highest of any car brand in the U.S. The company also won praise for its environmentally-conscious manufacturing processes and for its innovations such as using flexible plastic side panels on its cars to avoid minor dents. However, in 2005, the Saturn Relay became the first Saturn vehicle without polymer side paneling.