Oil majors: ExxonMobil (USA), Chevron (USA), Royal Dutch Shell (UK and Netherlands), BP (UK), TOTAL (French)

Traditionally, being an oil major has meant being a fully vertically integrated company from oil exploration, drilling, refining, and chemical production. ExxonMobil continues to fulfill that role, but they are much more than an oil company today. Although they are typically billed as an oil AND gas company. They are much more.