The Chrysler Six was a series of cars that were all installed with the Chrysler Straight Six when the company assumed operations of the Maxwell Automobile Company in 1924, and Chalmers Automobile Company in 1926. The Chrysler Six initially consisted of several Models, then Series designations that originally declared the approximate top speed each vehicle was able to consistently maintain, then each series number was incrementally updated every new model year, and each series was offered in several body style choices. The engines were technically advanced for their time and were entered in the 24 Hours of Le Mans for 1925, 1928 and 1929.

FCA US, LLC, doing business as Stellantis North America and known historically as Chrysler ( KRY-slər), is one of the "Big Three" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. Stellantis North America sells vehicles worldwide under the Chrysler, Dodge, Jeep, and Ram nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The division also distributes Alfa Romeo, Fiat and Maserati vehicles in North America.