7 largest oil refineries in the world in 2026

Oil refineries are central to the global energy system, processing crude oil into fuels that power economies. The world’s largest facilities handle hundreds of thousands — even over a million — barrels per day, shaping international trade and energy supply.

Below are the top ten oil refineries in the world ranked by capacity and operational scale:

Read also: Dangote Refinery’s crude supply doubles amid high import costs

1. Jamnagar Refinery, India

Launched in 1999 and expanded in 2008, the Jamnagar Refinery in Gujarat is the largest oil refinery complex in the world, it’s owned by Reliance Industries, the refinery has a processing capacity of 1.24 million barrels per day (bpd).

2. Paraguaná Refining Complex, Venezuela

Operated by Petróleos de Venezuela, S.A. (PDVSA), this complex on Venezuela’s Paraguaná Peninsula handles about 940,000 bpd, making it one of the biggest in the Western Hemisphere.

3. Ulsan Refinery, South Korea

Run by SK Energy, the Ulsan Refinery has a capacity of about 850,000 bpd. It’s the largest refinery in South Korea and one of Asia’s most technologically advanced refining centres.

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4. Yeosu Refinery, South Korea 

Established in 1969, located in Yeosu and run by GS Caltex,, the Yeosu Refinery boasts a capacity of 840,000 bpd. Its 2021 expansion introduced cutting-edge environmental technologies, reinforcing its status as one of Asia’s most efficient and eco-friendly refining facilities

5. Ruwais Refinery, United Arab Emirates

Built in 1982 and significantly upgraded in 2015, Managed by the Abu Dhabi National Oil Company (ADNOC), the Ruwais Refinery in the UAE processes around 827,000 bpd and serves as a major export hub for refined products in the Middle East

6.Onsan Refinery, South Korea

Operational since 1979, S-Oil Corporation operates the Onsan Refinery, which produces up to 669,000 bpd. It’s known for its advanced technology and high output efficiency It is widely recognized for innovation and the production of ultra-clean fuels that comply with strict international environmental standards.

Read also: Dangote Refinery’s crude supply doubles amid high import costs

7. Dangote Refinery, Nigeria

Situated in Lagos, Nigeria, and owned by Dangote Industries, this newly built refinery has a capacity of 650,000 barrels per day, making it Africa’s largest and one of the most advanced globally.