Mitsubishi Motors North America, Inc. is the North American operation of Mitsubishi Motors Corporation, overseeing sales, manufacturing, finance, and research and development functions. The company manufactures and sells Mitsubishi brand cars and sport utility vehicles through a network of almost 700 dealers in the United States, Canada, Mexico, and the Caribbean.

It operates its administrative headquarters in Cypress, California. Also based there are its captive finance subsidiary Mitsubishi Motors Credit of America, Inc. (MMCA), established in 1991. Mitsubishi Motors R&D of America, Inc. (MRDA) also has its Californian Research and Design Center there, while the R&D head office is in Ann Arbor, Michigan.

MMNA's sole production facility, formerly known as Diamond-Star Motors and then Mitsubishi Motor Manufacturing of America, is based in Normal, Illinois, where 1,900 workers are employed building the Galant, Eclipse, and Endeavor models.

MMNA was formed in 1981 after tensions arose between Mitsubishi and its then U.S. import partner, the Chrysler Corporation over conflicts in the international subcompact market, leading the ambitious Japanese company to establish its own sales network. The first year's allocation of 30,000 vehicles in 1982 were the $6,500 Tredia sedan, and the $7,000 Cordia and $12,000 Starion coupes, followed shortly by the Mighty Max pickup truck, and were sold through 70 dealers in 22 states.