Esso is an international trade name for
Exxon Mobil Corporation and its related companies. Pronounced S-O, it is derived from the name of the pre-1911
Standard Oil Company, and as such became the focus of much litigation and regulatory restriction in the United States. In 1973, it was largely replaced in the U.S. by the
Exxon brand, while Esso remained widely used elsewhere. In most of the world, the Esso brand and the
Mobil brand are the primary brand names of ExxonMobil, with the Exxon brand name still in use only in parts of the United States.
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