World Top 100 Oil or Gas Pipeline Transport Companies List by Market Cap as of August 2026

Indian Oil Corporation is State-Owned Oil and Gas company with headquarters is in New Delhi of India. Exploring, Refining, Pipe Line Transportation and Marketing of Oil and Gas related products is core business of IOC. It had more than 10 oil refineries. Markets petrol and diesel through its petrol outlets which are present across India. Headquarters is in India.

Servo engine oil brand belongs to IOCL.

It is pursuing diverse business interests with the setting up of over 15 joint ventures with reputed business partners from India.

PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY is a national petroleum exploration and production company. The company operates three business segments: Oil and gas exploration and production, overseas pipelines and investment in projects strategically connected to the energy business. It is a subsidiary of the state owned PTT public company limited. The headquarters is in Thailand.

PLAINS ALL AMERICAN PIPELINE is involved in intrastate crude oil pipeline transportation and terminal storage activities. The company is operates in three segments: transportation, facilities, and supply and logistics. By this segments the company is engaged in transportation, storage, terminating and marketing of crude oil, NGL and natural gas. The headquarters is in USA.

DT Midstream is an owner, operator and developer of natural gas midstream interstate and intrastate pipelines, storage and gathering systems and compression, treatment and surface facilities company. It provide clean, natural gas to gas and electric utilities, power plants, marketers, large industrial customers and energy producers across the Southern, North-eastern and Midwestern USA and into Canada. The headquarters is in USA.

Bollore operates as a holding transportation company. The Company offers cargo transportation, logistics, communications, and electricity and storage solutions, as well as manages a portfolio of communication and agricultural sector which includes oil palm and rubber trees plantations, video game console supplies and manufacturing of steel tubes. The headquarters is in France.

MOL is Oil and gas sector company with headquarters is in Hungary. As on 2019 they have 26000 employees. They have 3 refineries.