As of mid-2025, the top 10 oil and gas companies in the world—ranked by revenue, market capitalisation, and overall global influence—are:
1. Saudi Aramco (Saudi Arabia)
- Market Cap: ~$2.1 trillion
- Highlights: World’s largest oil producer; state-owned giant with the lowest production costs globally.
2. ExxonMobil (United States)
- Market Cap: ~$500 billion
- Highlights: Leading integrated energy company; significant operations in upstream, midstream, and downstream sectors.
3. Shell (United Kingdom / Netherlands)
- Market Cap: ~$270 billion
- Highlights: Strong global presence; diversified in LNG, refining, and renewable energy ventures.
4. Chevron (United States)
- Market Cap: ~$290 billion
- Highlights: Major player in US shale, deepwater, and international operations; active in decarbonisation tech.
5. BP (United Kingdom)
- Market Cap: ~$120 billion
- Highlights: Focused on transitioning to integrated energy solutions; significant investments in offshore wind and hydrogen.
6. TotalEnergies (France)
- Market Cap: ~$150 billion
- Highlights: Broad portfolio in oil, gas, solar, and battery storage; expanding in Africa and the Middle East.
7. PetroChina (China)
- Market Cap: ~$190 billion
- Highlights: Largest Chinese oil producer; central to China’s energy security and domestic refining capacity.
8. Sinopec (China)
- Market Cap: ~$80 billion
- Highlights: One of the world’s largest refiners and marketers of petroleum products.
9. Eni (Italy)
- Market Cap: ~$60 billion
- Highlights: Strong presence in Africa and the Mediterranean; aggressive transition strategy toward renewable gas and CCS.
10. QatarEnergy (Qatar)
- Market Cap (Est.): Privately held
- Highlights: World’s largest LNG exporter; driving massive expansion in LNG capacity and global partnerships.