AGCO Corporation is an agricultural equipment manufacturer based in Duluth, Georgia. It was formed in 1990 when executives at Deutz-Allis bought out Deutz-Allis' North American operations from KHD, Klockner-Humboldt-Deutz , a German company that owned the Deutz-Fahr brand of agriculture equipment. The new company was first called Gleaner-Allis Corporation, then rearranged to be Allis-Gleaner Corporation, or AGCO. The Deutz-Allis line of tractors were renamed Agco-Allis, and Gleaner became a brand of its own for combines. The Deutz-Allis brand continued in South America until 2001, when they were renamed Agco-Allis . They continue in the lime-green livery.

In 1991, AGCO purchased the Hesston Corporation , gaining hay and forage equipment. Hesston had a 50 percent joint venture with Case International , now a part of CNH . AGCO purchased the White tractor line from the Allied Corporation's White-New Idea company. In 1993, AGCO purchased the remainder of White-New Idea , gaining New Idea hay equipment and manure spreaders, and White planters.

Also in 1993, AGCO purchased the North American distribution rights to Massey Ferguson, a world-wide agricultural equipment company. In 1994, they purchased McConnell Tractors, manufacturer of the large articulated Massey Ferguson tractors. AGCO developed the Agcostar line of articulated tractors. Later in 1994, the Black Machine line of planters was purchased.

1995 saw the purchase of the AgEquipment Group, which manufactured tillage equipment and loaders under the Glenco, Tye and Farmhand brands. In 1996, acquisitions went international with the purchase of Iochpe-Maxion in Brazil. This was the Brazilian company that had rights to the Massey Ferguson brand and manufacturing in the region, as well as the Maxion brand of industrial equipment. This was also the year that AGCO purchase Deutz Argentina, the number one leader of tractors in Argentina. Also in 1996, AGCO purchased Western Combine Corporation and Portage Manufacturing in Canada. Western Combine had previously purchased the assets of the Massey Combine Corporation's combine operation, which had been spun of by Massey-Ferguson.

1997 was the year of the major purchase of Fendt in Germany, the leading German tractor company. Fendt is well known for its advanced technology. AGCO also acquired Dronningborg Industries in Denmark, the manufacturer of European Massey-Ferguson combines.

In 1998, AGCO made a joint venture with Deutz AG to produce engines in Argentina, and purchased the Spra-Coupe and Willmar companies. Spra-Coupe and Willmar are leading sprayer companies in North America.

For the year 2000, AGCO bought out its partner Case International in the Hay and Forage Industries joint venture. In 2001, AGCO purchased Ag-Chem Equipment, expanding its spreader business. That year, the Agco-Allis and White tractor lines were merged in North America to become simply AGCO, continuing in the orange color.

2002 was the year that AGCO purchased the Challenger line from the Caterpillar Corporation, giving AGCO a well-known brand name and high-power tracked tractors. AGCO also purchased the Sunflower Manufacturing Company, which manufactures tillage, seeding and specialty harvesting equipment.

2004 brought about the purchase of the Valtra tractor company from the Kone Group, in Finland. Valtra has some licensing agreements with the Eicher company in India for tractor production, and also with the Hema group in Turkey. The purchase of Valtra also includes the Sisu engines.