Hess is an American oil and gas company that is one of the largest independent oil and gas companies in the world. It is often referred to as an oil and gas giant due to its size and influence in the industry. Hess is headquartered in New York City and has operations in more than 20 countries. The company produces crude oil, natural gas, and refined products such as gasoline, diesel, and jet fuel. Hess also has a large presence in the exploration and production of oil and gas, as well as in refining and marketing.