World

Top 52 largest Companies in the Oil & Gas Integrated industry in the World by Market Cap

This is the list of the largest public listed companies in the Oil & Gas Integrated industry in the world by market capitalization with links to their reference stock.

World Oil & Gas Integrated Industry Analysis
World Top Companies World Companies Analysis

Top Oil & Gas Integrated Companies in the World as of Jan. 01, 2026

Rank Company Market Cap (USD) Country Sector Industry
31 SNGN Romgaz SA $4.94 B

(July 1, 2024)

 Romania Romania Energy Romania Oil & Gas Integrated
32 Guanghui Energy Co. Ltd $4.53 B China Chinese Energy Chinese Oil & Gas Integrated
33 Cosmo Energy Holdings Co. Ltd $4.25 B Japan Japanese Energy Japanese Oil & Gas Integrated
34 Rabigh Refining and Petrochemical Company $4.05 B Saudi Arabia Saudi Arabian Energy Saudi Arabian Oil & Gas Integrated
35 Sasol Limited $3.99 B South Africa South African Energy South African Oil & Gas Integrated
36 Bashneft PJSC $3.39 B

(July 1, 2025)

 Russia Russian Energy Russian Oil & Gas Integrated
37 Hellenic Petroleum SA $3.06 B Greece Greece Energy Greece Oil & Gas Integrated
38 Avance Gas Holding Ltd $1.18 B

(July 1, 2024)

 Bermuda Bermuda Energy Bermuda Oil & Gas Integrated
39 Public Joint Stock Company Yakutsk Fuel and Energy Company $537.3 M

(July 1, 2025)

 Russia Russian Energy Russian Oil & Gas Integrated
40 Unit Corp $314.2 M United States US Energy US Oil & Gas Integrated
41 PT Super Energy Tbk $241.2 M Indonesia Indonesian Energy Indonesian Oil & Gas Integrated
42 John Wood Group plc $222.7 M United Kingdom UK Energy UK Oil & Gas Integrated
43 HIROSHIMA GAS Co.,Ltd. $164.5 M Japan Japanese Energy Japanese Oil & Gas Integrated
44 Adams Resources & Energy, Inc. $97.6 M

(Jan. 1, 2025)

 United States US Energy US Oil & Gas Integrated
45 Stabilis Energy, Inc. $82.2 M

(July 1, 2025)

 United States US Energy US Oil & Gas Integrated
46 China Energy Development Holdings Ltd $79.0 M

(July 1, 2025)

 Hong Kong HK Energy HK Oil & Gas Integrated
47 SPT Energy Group, Inc. $47.9 M China Chinese Energy Chinese Oil & Gas Integrated
48 Public Joint Stock Company Gazprom Russia Russian Energy Russian Oil & Gas Integrated
49 Savoy Energy Corp United States US Energy US Oil & Gas Integrated
50 Ojai Oil Co. United States US Energy US Oil & Gas Integrated
51 Quadrise Plc United Kingdom UK Energy UK Oil & Gas Integrated
52 Pacific Energy & Mining Co. United States US Energy US Oil & Gas Integrated

Top Oil & Gas Integrated Companies in the World as of Jan. 01, 2026

31. SNGN Romgaz SA

Company Profile: SNGN Romgaz SA
Market Cap (USD): $4.94 B (July 1, 2024)
Country: Romania
Sector: Romania Energy
Industry: Romania Oil & Gas Integrated

32. Guanghui Energy Co. Ltd

Company Profile: Guanghui Energy Co. Ltd
Market Cap (USD): $4.53 B
Country: China
Sector: Chinese Energy
Industry: Chinese Oil & Gas Integrated

33. Cosmo Energy Holdings Co. Ltd

Company Profile: Cosmo Energy Holdings Co. Ltd
Market Cap (USD): $4.25 B
Country: Japan
Sector: Japanese Energy
Industry: Japanese Oil & Gas Integrated

34. Rabigh Refining and Petrochemical Company

Company Profile: Rabigh Refining and Petrochemical Company
Market Cap (USD): $4.05 B
Country: Saudi Arabia
Sector: Saudi Arabian Energy
Industry: Saudi Arabian Oil & Gas Integrated

35. Sasol Limited

Company Profile: Sasol Limited
Market Cap (USD): $3.99 B
Country: South Africa
Sector: South African Energy
Industry: South African Oil & Gas Integrated

36. Bashneft PJSC

Company Profile: Bashneft PJSC
Market Cap (USD): $3.39 B (July 1, 2025)
Country: Russia
Sector: Russian Energy
Industry: Russian Oil & Gas Integrated

37. Hellenic Petroleum SA

Company Profile: Hellenic Petroleum SA
Market Cap (USD): $3.06 B
Country: Greece
Sector: Greece Energy
Industry: Greece Oil & Gas Integrated

38. Avance Gas Holding Ltd

Company Profile: Avance Gas Holding Ltd
Market Cap (USD): $1.18 B (July 1, 2024)
Country: Bermuda
Sector: Bermuda Energy
Industry: Bermuda Oil & Gas Integrated

39. Public Joint Stock Company Yakutsk Fuel and Energy Company

Company Profile: Public Joint Stock Company Yakutsk Fuel and Energy Company
Market Cap (USD): $537.3 M (July 1, 2025)
Country: Russia
Sector: Russian Energy
Industry: Russian Oil & Gas Integrated

40. Unit Corp

Company Profile: Unit Corp
Market Cap (USD): $314.2 M
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

41. PT Super Energy Tbk

Company Profile: PT Super Energy Tbk
Market Cap (USD): $241.2 M
Country: Indonesia
Sector: Indonesian Energy
Industry: Indonesian Oil & Gas Integrated

42. John Wood Group plc

Company Profile: John Wood Group plc
Market Cap (USD): $222.7 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Integrated

43. HIROSHIMA GAS Co.,Ltd.

Company Profile: HIROSHIMA GAS Co.,Ltd.
Market Cap (USD): $164.5 M
Country: Japan
Sector: Japanese Energy
Industry: Japanese Oil & Gas Integrated

44. Adams Resources & Energy, Inc.

Company Profile: Adams Resources & Energy, Inc.
Market Cap (USD): $97.6 M (Jan. 1, 2025)
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

45. Stabilis Energy, Inc.

Company Profile: Stabilis Energy, Inc.
Market Cap (USD): $82.2 M (July 1, 2025)
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

46. China Energy Development Holdings Ltd

Company Profile: China Energy Development Holdings Ltd
Market Cap (USD): $79.0 M (July 1, 2025)
Country: Hong Kong
Sector: HK Energy
Industry: HK Oil & Gas Integrated

47. SPT Energy Group, Inc.

Company Profile: SPT Energy Group, Inc.
Market Cap (USD): $47.9 M
Country: China
Sector: Chinese Energy
Industry: Chinese Oil & Gas Integrated

48. Public Joint Stock Company Gazprom

Company Profile: Public Joint Stock Company Gazprom
Country: Russia
Sector: Russian Energy
Industry: Russian Oil & Gas Integrated

49. Savoy Energy Corp

Company Profile: Savoy Energy Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

50. Ojai Oil Co.

Company Profile: Ojai Oil Co.
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

51. Quadrise Plc

Company Profile: Quadrise Plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Integrated

52. Pacific Energy & Mining Co.

Company Profile: Pacific Energy & Mining Co.
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

Stay in touch