Leading global oil and gas producers based on market cap June 2023

ExxonMobil has the highest market capitalization of any oil and gas producer worldwide. As of June 8, 2023, the United States-based company had a market cap of 352.79 billion U.S. dollars.

Big Oil's place among the ten leading oil and gas companies

Of the ten largest companies in this ranking, five were considered Big Oil companies. Reliance Industries, the Indian conglomerate, which operates the world's largest oil refinery complex and is also involved in retail and telecommunications, ranked third, with a market cap of nearly 170 billion U.S. dollars.

KPI's of top oil & gas companies

While there has been little change in which companies are counted among the largest within their industry, their ranking varies depending on the metric used. Although ExxonMobil has often ranked first in terms of market capitalization, China's Sinopec was found to be the leading oil and gas company worldwide based on revenue, with ExxonMobil ranking third. Meanwhile, state-owned enterprises such as Gazprom and PetroChina are the leading oil and gas companies worldwide based on employment. In 2022, their respective workforce consisted of over 400,000 employees.