Deere & Company, usually known by its brand name John Deere (NYSE: DE), is an American corporation based in Moline, Illinois, and the leading manufacturer of agricultural machinery in the world. In 2010, it was listed as 107th in the Fortune 500 ranking. Deere and Company agricultural products, sold under the John Deere name, include tractors, combine harvesters, cotton harvesters, balers, planters/seeders, sprayers, and UTVs. The company is also a leading manufacturer of construction equipment and forestry equipment, as well as a supplier of diesel engines and drivetrains (axles, transmissions, gearboxes) used in heavy equipment. Additionally, John Deere manufactures equipment used in lawn, grounds, and turf care, such as walk-behind lawn mowers, zero-turn lawn mowers, lawn tractors, and snowthrowers. To support the core businesses, John Deere also provides financial services and other related activities.

The company's slogan is "Nothing Runs Like a Deere" and has a picture of a leaping deer as a logo, a word play pun on "nothing runs like a deer". Carl Westby is known as the person who coined the phrase "Nothing Runs Like a Deere" for a marketing campaign to sell snowmobiles. The company's products are also easily identifiable by its distinct shade of green paint, usually augmented by yellow trim.