Company lists · Data refreshed September 2026
Top 25 Gas oil companies worldwide
RevenueBase identified 1,181 gas oil companies worldwide as of September 2026 and tracks 310,437 professional contacts across them, including 60,405 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers gas oil companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for gas oil companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest gas oil companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 60,138 contacts → | ||||
Indirect evidence “Our greatest resource is our people.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 36,135 contacts → | ||||
Indirect evidence “Sonatrach (Société Nationale pour la Recherche, la Production, le Transport, la Transformation, et la Commercialisation des Hydrocarbures s.p.a.) is an Algerian government-owned…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 28,095 contacts → | ||||
Indirect evidence “Petroliam Nasional Berhad (PETRONAS) is a leading global energy company committed to powering society’s progress in a responsible and sustainable manner.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 25,939 contacts → | ||||
Indirect evidence “We are one of the world's leading energy producers, and a primary catalyst for Abu Dhabi’s growth and diversification.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 18,628 contacts → | ||||
Partial evidence “Fortune Global 500 Company, Bharat Petroleum is the second largest Indian Oil Marketing Company and one of the premier integrated energy companies in India, engaged in refining of…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 16,245 contacts → | ||||
Strong evidence “Oxy is an international energy company that produces, markets and transports oil and natural gas to maximize value and provide resources fundamental to life.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 12,478 contacts → | ||||
Strong evidence “We are the leading exploration and production company in the Sultanate of Oman that delivers the majority of the country's crude oil production and natural gas supply, but above…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 6,379 contacts → | ||||
Indirect evidence “Cenovus Energy Inc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4,897 contacts → | ||||
Strong evidence “Emirates National Oil Company Group (ENOC) is a leading integrated global oil and gas player operating across the energy sector value chain.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4,396 contacts → | ||||
Indirect evidence “CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4,277 contacts → | ||||
Indirect evidence “After more than a century, Imperial continues to be an industry leader in applying technology and innovation to responsibly develop Canada’s energy resources.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4,121 contacts → | ||||
Indirect evidence “Nayara Energy is an international energy company with a strong presence in the hydrocarbon value chain ranging from refining to production and marketing to retail.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3,932 contacts → | ||||
Strong evidence “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2,450 contacts → | ||||
Partial evidence “The pioneer of the natural gas industry in the country, Pakistan Petroleum Limited (PPL) has been a frontline player in the energy sector since the mid-1950s.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 2,259 contacts → | ||||
Indirect evidence “Bapco (with a legacy of being referred to as “The Company” in Arabic - Ash Shariqa locally) is a trusted and enterprising organisation, which has never stood still since its…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2,216 contacts → | ||||
Strong evidence “The largest independent oil and gas company listed on the London Stock Exchange.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,952 contacts → | ||||
Indirect evidence “Sinopec International Petroleum Service Corporation SSC” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,824 contacts → | ||||
Indirect evidence “BG Group is now part of Royal Dutch Shell plc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,396 contacts → | ||||
Indirect evidence “We are energy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,297 contacts → | ||||
Indirect evidence “Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,282 contacts → | ||||
Strong evidence “oil and gas” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,194 contacts → | ||||
Indirect evidence “Chennai Petroleum Corporation Limited (CPCL) is a subsidiary of IOCL with world class refining technologies and a dominant presence in South India.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,159 contacts → | ||||
Strong evidence “Somos la compañía de energía lider en la prestación de servicios integrados en la industria Oil & Gas Nuestros servicios y soluciones permiten integran toda la cadena de valor del…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,155 contacts → | ||||
Indirect evidence “WE ARE NOBLE.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,106 contacts → | ||||
Indirect evidence “Wintershall Dea is an energy company with a long history, whose final chapter is being written.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: gas oil companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names gas oil companies.
- Partial evidence
- Its own public description names part of gas oil companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name gas oil companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,181 gas oil companies worldwide
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Gas oil companies worldwide at a glance
As of Sep 21, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among gas oil companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for gas oil companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “gas oil companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names gas oil companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among gas oil companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 60,405 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Gas oil companies by location
6 lists · largest firstEvery Gas oil companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names gas oil companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many gas oil companies are there worldwide?
RevenueBase identified 1,181 gas oil companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Chevron, headquartered in Houston, tops this list with the largest team on record.
Which country has the most gas oil companies?
The United States leads with 321 companies, followed by the United Kingdom (45) and India (40). Every gas oil companies list by country and city is linked on this page.
Which city has the most gas oil companies?
Houston leads with 45 headquartered companies, followed by Calgary (22) and Dubai (22).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 60,405 verified decision-maker contacts tracked across these 1,181 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.