Hummer (English: hummer, "one who hums"; in Russian usage, "hammer") is a vehicle of the American military with a very wide track, running on diesel.

Nizhny Novgorod millionaires own several "Hummers," including one Hummer limousine. Also registered in Nizhny Novgorod is OOO Hummer (INN 5263042169, OGRN 1035206165169), an active micro-enterprise registered on October 3, 2003, whose main line of business is the wholesale of automotive parts, assemblies, and accessories; its registered address is 24 Korablestroiteley Avenue, Building 2. In practice, OOO Hummer specializes in spare parts for MAZ and Zubrenok trucks, as well as YaMZ engines — covering the engine, suspension, running gear, steering and braking systems, cab, and electrical equipment; in addition, the company sells diesel oils, truck tires, and storage batteries. The charter capital of OOO Hummer is 110 thousand rubles; the general director and sole founder since registration has been Maxim Lvovich Dubinkin.

As of 2025, OOO Hummer has an average headcount of 1 employee and revenue of 904 thousand rubles. As of the end of 2025, the total assets of OOO Hummer stood at 1.2 million rubles — 13% more than a year earlier. In June 2012, OOO Hummer opened an additional shop at 49 Fedoseenko Street, open on weekdays and Saturdays. Separately, the company Fortuna Tur offers rental of a white Hummer H2 jeep-limousine seating 28 people — by the company's own claim, the largest limousine of its kind in the city; the interior is equipped with three bars, light and laser effects, a powerful air conditioner, and an increased roof height, with rental available from one hour.