Largest O&G Companies by Market Capitalization in 2026

Aerial view of multiple offshore oil platforms with a support vessel in the foreground, set against a clear blue ocean.
Offshore oil and gas facilities. Photo by Aron Razif on Pexels

Here are the 10 largest oil and gas companies by market capitalization in 2026.

1️⃣ Saudi Aramco — $1.7T

2️⃣ ExxonMobil — $630B

3️⃣ Chevron — $380B

4️⃣ PetroChina — $330B

5️⃣ Shell — $240B

6️⃣ CNOOC — $170B

7️⃣ TotalEnergies — $170B

8️⃣ ConocoPhillips — $143B

9️⃣ Sinopec — $122B

🔟 Enbridge — $118B

Source: INVEST

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