World Top 100 Oil and Gas Companies List by Market Cap as of August 2026

World Top 100 Oil and Gas Companies List by Market Cap as of August 2026, World Biggest 100 Oil and Gas Companies by Market Cap, World Largest 100 Oil and Gas Companies in the World by market cap as of August 2026.

World Top Oil and Gas Companies in 2026
World Top Oil and Gas Companies by Market Cap in 2026, World Largest Oil and Gas Companies by Market Cap in 2026.

  1. HighPeak Energy Inc.

    World Rank (Aug-2026)
    9,523
    Market Cap (Aug-2026)
    0.940 Billion USD
    World Rank (Jan-05-2024)
    5,757
    Market Cap (Jan-05-2024)
    1.955 Billion USD
    World Rank (Jul-30-2023)
    6,184
    Market Cap (Jul-30-2023)
    1.777 Billion USD
    World Rank (Dec-25-2022)
    4,883
    Market Cap (Dec-25-2022)
    2.345 Billion USD
    World Rank (Jan-07-2022)
    6,831
    Market Cap (Jan-07-2022)
    1.75 Billion USD
    Annual Revenue in USD
    863 Million USD
    Annual Operating Income in USD
    150 Million USD
    Annual Net Income in USD
    19 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Company Profile
    HighPeak Energy is an independent oil and natural gas company focused on the development of unconventional oil and natural gas reserves in primarily Howard County of the Midland Basin. The headquarters is in USA.
    Facts About Company
    The company total assets are 538 million USD as on 2020.
    Company Website
    HIGHPEAK ENERGY, INC.

  2. Dor Alon Energy In Israel (1988)

    World Rank (Aug-2026)
    9,574
    Market Cap (Aug-2026)
    0.929 Billion USD
    World Rank (Jan-05-2024)
    15,249
    Market Cap (Jan-05-2024)
    0.327 Billion USD
    World Rank (Jul-30-2023)
    15,800
    Market Cap (Jul-30-2023)
    0.301 Billion USD
    World Rank (Dec-25-2022)
    13,141
    Market Cap (Dec-25-2022)
    0.447 Billion USD
    World Rank (Jan-07-2022)
    12,914
    Market Cap (Jan-07-2022)
    0.55 Billion USD
    Annual Revenue in USD
    1,490 Million USD
    Annual Net Income in USD
    64 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Israel
    Yahoo @ Israel
    Company Website
    DOR ALON ENERGY IN ISRAEL (1988)

  3. Karoon Energy Ltd

    World Rank (Aug-2026)
    9,591
    Market Cap (Aug-2026)
    0.925 Billion USD
    World Rank (Jan-05-2024)
    8,120
    Market Cap (Jan-05-2024)
    1.098 Billion USD
    World Rank (Jul-30-2023)
    9,647
    Market Cap (Jul-30-2023)
    0.840 Billion USD
    World Rank (Dec-25-2022)
    9,380
    Market Cap (Dec-25-2022)
    0.832 Billion USD
    World Rank (Jan-07-2022)
    11,100
    Market Cap (Jan-07-2022)
    0.75 Billion USD
    Annual Revenue in USD
    385 Million USD
    Annual Net Income in USD
    -64 Million USD
    Annual Results for Period Ending
    Jun-2022 ending year
    Headquarters Country
    Australia
    Stock Category
    Australia ADRs
    Yahoo @ Frankfurt
    Company Website
    KAROON ENERGY LTD

  4. Gulf International Services

    World Rank (Aug-2026)
    9,691
    Market Cap (Aug-2026)
    0.901 Billion USD
    World Rank (Jan-05-2024)
    7,166
    Market Cap (Jan-05-2024)
    1.368 Billion USD
    World Rank (Jul-30-2023)
    8,488
    Market Cap (Jul-30-2023)
    1.053 Billion USD
    World Rank (Dec-25-2022)
    9,726
    Market Cap (Dec-25-2022)
    0.780 Billion USD
    World Rank (Jan-07-2022)
    10,157
    Market Cap (Jan-07-2022)
    0.88 Billion USD
    Annual Revenue in USD
    849 Million USD
    Annual Net Income in USD
    15 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Qatar
    Yahoo @ Qatar
    Company Profile

    Gulf international Services Q.P.S.C. operates in four distinct segments -

    • Insurance and reinsurance,
    • Drilling and associated services,
    • Helicopter transportation services and
    • Catering services.
    Company Website
    GULF INTERNATIONAL SERVICES

  5. CrossAmerica Partners Lp

    World Rank (Aug-2026)
    9,693
    Market Cap (Aug-2026)
    0.901 Billion USD
    World Rank (Jan-05-2024)
    9,215
    Market Cap (Jan-05-2024)
    0.891 Billion USD
    World Rank (Jul-30-2023)
    10,147
    Market Cap (Jul-30-2023)
    0.768 Billion USD
    World Rank (Dec-25-2022)
    9,766
    Market Cap (Dec-25-2022)
    0.773 Billion USD
    World Rank (Jan-07-2022)
    10,982
    Market Cap (Jan-07-2022)
    0.76 Billion USD
    Annual Revenue in USD
    3,663 Million USD
    Annual Operating Income in USD
    98 Million USD
    Annual Net Income in USD
    42 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile
    Cross America Partners LP is a Wholesale distributor of motor fuels and lessor of real estate for fuel retailers throughout the North-eastern United States. The company annual revenue is 398.4 million USD and 548 employees as on 2020. The headquarters is in USA.
    Company Website
    CROSSAMERICA PARTNERS LP

  6. AAG Energy Holdings

    World Rank (Aug-2026)
    9,773
    World Rank (Jan-05-2024)
    9,773
    World Rank (Jul-30-2023)
    9,773
    World Rank (Dec-25-2022)
    9,773
    Market Cap (Dec-25-2022)
    0.772 Billion USD
    World Rank (Jan-07-2022)
    12,398
    Market Cap (Jan-07-2022)
    0.59 Billion USD
    Annual Revenue in USD
    253 Million USD
    Annual Net Income in USD
    119 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Hong Kong
    Yahoo @ Frankfurt
    Company Website
    AAG ENERGY HOLDINGS

  7. Shawcor

    World Rank (Aug-2026)
    9,910
    Market Cap (Aug-2026)
    0.867 Billion USD
    World Rank (Jan-05-2024)
    10,278
    Market Cap (Jan-05-2024)
    0.736 Billion USD
    World Rank (Jul-30-2023)
    8,489
    Market Cap (Jul-30-2023)
    1.053 Billion USD
    World Rank (Dec-25-2022)
    10,303
    Market Cap (Dec-25-2022)
    0.707 Billion USD
    World Rank (Jan-07-2022)
    16,953
    Market Cap (Jan-07-2022)
    0.29 Billion USD
    Headquarters Country
    Canada
    Yahoo @ Toronto
    Company Website
    SHAWCOR LTD.

  8. Diversified Gas & Oil

    World Rank (Aug-2026)
    9,922
    World Rank (Jan-05-2024)
    9,922
    World Rank (Jul-30-2023)
    9,922
    Market Cap (Jul-30-2023)
    0.800 Billion USD
    World Rank (Dec-25-2022)
    8,533
    Market Cap (Dec-25-2022)
    0.968 Billion USD
    World Rank (Jan-07-2022)
    9,547
    Market Cap (Jan-07-2022)
    0.98 Billion USD
    Annual Revenue in USD
    1,919 Million USD
    Annual Operating Income in USD
    1,138 Million USD
    Annual Net Income in USD
    -625 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    USA
    Company Profile
    Diversified Gas & Oil is an established, independent owner and operator of producing natural gas & oil wells concentrated in the Appalachian Basin in the United States. It is having 130 employees as on 2019. The headquarters is in USA.
    Company Website
    Diversified Gas & Oil

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