Company lists · Data refreshed September 2026
Top 25 Offshore energy law firms worldwide
RevenueBase identified 1,219 offshore energy law firms worldwide as of September 2026 and tracks 26,956 professional contacts across them, including 10,243 with verified work emails. The United States is the largest market and London the largest hub.
This list covers offshore energy law firms 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 29, 2026. Country and city lists for offshore energy law firms 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 offshore energy law firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,079 contacts → | ||||
Partial evidence “Clyde & Co is a leading global law firm, helping organisations successfully navigate risk and maximise opportunity in the sectors that underpin global trade and commercial…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,643 contacts → | ||||
Strong evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,406 contacts → | ||||
Strong evidence “HFW is a leading global law firm in the aerospace, commodities, construction, energy, insurance, and shipping sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 960 contacts → | ||||
Indirect evidence “O ve r t wo d e c a d e s (2 0 0 1 - P re s e n t) o f s p e c i a l i z e d ex p e r i e n c e i n I n t e r n a t i o n a l M a r i t i m e L a w a n d Ya c h t I n s u r a n c…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 761 contacts → | ||||
Strong evidence “Appleby is one of the world’s leading offshore law firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 757 contacts → | ||||
Strong evidence “Steptoe & Johnson PLLC is a law firm nationally recognized for its strengths in energy law with more than a century of know-how in the areas of business, employment, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 720 contacts → | ||||
Partial evidence “Yantai CIMC Raffles Offshore Technology Group Co, Ltd.(“CIMC Raffles”) is a leading offshore engineering and high-end marine equipment group in China, with a strong focus on the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 705 contacts → | ||||
Strong evidence “Carey Olsen is a leading offshore law firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 629 contacts → | ||||
Partial evidence “Always do better" is our guiding principle leading us through the energy transition and towards our vision of becoming the preferred supplier of drilling services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 484 contacts → | ||||
Partial evidence “Morgan & Morgan is a full-service Panamanian law firm, regularly assisting local and multinational corporations from different industries, as well as recognized financial…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 420 contacts → | ||||
Strong evidence “Somos una empresa integradora de servicios offshore para la industria energética, mediante embarcaciones especializadas, ofreciendo soluciones con la máxima relación costo-tiempo…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 288 contacts → | ||||
Partial evidence “About Rem Offshore Rem Offshore is a new company with old roots – tracing back to 1978 with fishery activities in Norway, Rem Offshore organisation today operates worldwide, with…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 272 contacts → | ||||
Partial evidence “GustoMSC, part of NOV, provides offshore designs, reliable equipment and engineering solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 271 contacts → | ||||
Partial evidence “Schouest, Bamdas, Soshea & BenMaier PLLC is a law firm focused on your needs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 259 contacts → | ||||
Indirect evidence “Liskow was founded in 1935 and includes nearly 150 lawyers across our five offices, strategically located in New Orleans, Lafayette, and Baton Rouge, Louisiana, Houston, Texas…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 194 contacts → | ||||
Partial evidence “Atlantic Towing is a leading provider of Offshore Supply, Port and Coastal marine services, operating in the North Atlantic, South Atlantic, Arctic and Pacific Coastal regions, as…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 185 contacts → | ||||
Partial evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 183 contacts → | ||||
Strong evidence “Bedell Cristin is a global, full-service offshore law firm, providing corporate, institutional and private clients with straight-talking legal advice.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 175 contacts → | ||||
Strong evidence “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 174 contacts → | ||||
Strong evidence “Van Ness Feldman is a nationally recognized mid-sized law firm specializing in the areas of energy, environment, and natural resources law and policy, with offices in Washington…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 158 contacts → | ||||
Partial evidence “Ince & Co is an international commercial law firm, with 13 offices worldwide, founded in 1870.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 138 contacts → | ||||
Indirect evidence “Com 94 anos de história, possuímos vasta experiência na prestação de assessoria jurídica a clientes nacionais e internacionais.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 136 contacts → | ||||
Indirect evidence “DOF Brasil is a company based out of Brazil.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 124 contacts → | ||||
Partial evidence “JUMBO Consulting Group is a highly experienced and specialised advisory that offers strategic services and project delivery consultancy for offshore wind, offshore transmission…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 115 contacts → | ||||
Partial evidence “As a leading commercial law firm, we are internationally recognized for our core competencies in real estate, maritime industry, and the transportation/aviation/logistics market.” Source: RevenueBase Database · checked Sep 29, 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: offshore energy law firms. 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 offshore energy law firms.
- Partial evidence
- Its own public description names part of offshore energy law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name offshore energy law firms. 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 1,219 offshore energy law firms worldwide
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Offshore energy law firms worldwide at a glance
As of Sep 29, 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 offshore energy law firms, 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 offshore energy law firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “offshore energy law firms”. 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 offshore energy law firms), 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 offshore energy law firms, 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, 10,243 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 29, 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.
Offshore energy law firms by location
12 lists · largest firstEvery Offshore energy law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Offshore energy law firms based in the United States180
- Offshore energy law firms based in the United Kingdom109
- Offshore energy law firms based in Brazil65
- Offshore energy law firms based in the Netherlands48
- Offshore energy law firms based in Germany47
- Offshore energy law firms based in Spain47
- Offshore energy law firms based in Türkiye44
- Offshore energy law firms based in Norway41
- Offshore energy law firms based in France29
- Offshore energy law firms based in Italy25
Cities
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 offshore energy law firms, 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 offshore energy law firms are there worldwide?
RevenueBase identified 1,219 offshore energy law firms 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?
Clyde & CO, headquartered in London, tops this list with the largest team on record.
Which country has the most offshore energy law firms?
The United States leads with 180 companies, followed by the United Kingdom (109) and Brazil (65). Every offshore energy law firms list by country and city is linked on this page.
Which city has the most offshore energy law firms?
London leads with 44 headquartered companies, followed by Houston (43) and Rio De Janeiro (23).
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 10,243 verified decision-maker contacts tracked across these 1,219 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 29, 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.