World Top 100 Oil and Gas Companies List by Market Cap as of August 2026

Advantage Oil and Gas Ltd. is a growth-oriented corporation company focused entirely on development of significant position in the Montney natural gas and liquids. The company annual revenue is 464 million CAD and annual net income is 411 million CAD for year ending December 2021. The headquarters is in Canada.

United Energy Group is a Oil and Gas Exploration and Production company. It has significant operations in the Middle East and North Africa region for a transaction value of approximately US$1 billion. The company has grown into a medium size international oil and gas company with about 1,308 full time employees working at its offices and field facilities, in the MENA and Asia region. The headquarters is in Hong Kong.

Noble Midstream Partners LP is a Provides Crude Oil, Natural Gas and Water Related Midstream Services company. It have acreage dedications spanning approximately 3,00,000 acres from 2,35,000 dedicated acres from Noble and 65,000 from a third party. The headquarters is in USA.

Z Energy is New Zealand largest fuel supplier and it has more than 550 service stations. Headquarters is in New Zealand.

Noreco is a publicly owned company with focus on the oil, gas and offshore industry. The company's shares are listed on the Oslo Stock Exchange. Headquarters is in Norway.