Company lists · Data refreshed September 2026

Top 25 Environmental maritime law firms worldwide

Name: Environmental maritime law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 8,659 companies tracked

RevenueBase identified 8,659 environmental maritime law firms worldwide as of September 2026 and tracks 110,907 professional contacts across them, including 44,096 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers environmental maritime 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 28, 2026. Country and city lists for environmental maritime 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

8,659Companies

110,907Contacts tracked

44,096Verified emails

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The 25 largest environmental maritime law firms worldwide

Ranked by team size

Top 25 of 8,659 environmental maritime law firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to environmental maritime law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Clyde & CO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	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 28, 2026
2	Kennedys	Indirect evidence	City Of London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	2,847 contacts →
	Indirect evidence “Every day we make a difference.” Source: RevenueBase Database · checked Sep 28, 2026
3	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,333 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 28, 2026
4	TLT LLP	Indirect evidence	Bristol, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,797 contacts →
	Indirect evidence “We’re your business advisers as well as your lawyers, working in step with you to protect your interests today and progress your ambitions for tomorrow.” Source: RevenueBase Database · checked Sep 28, 2026
5	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,682 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 28, 2026
6	Corrs Chambers Westgarth	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	1,001-5,000	1,506 contacts →
	Partial evidence “Corrs Chambers Westgarth is Australia’s leading independent law firm.” Source: RevenueBase Database · checked Sep 28, 2026
7	HFW	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,406 contacts →
	Partial evidence “HFW is a leading global law firm in the aerospace, commodities, construction, energy, insurance, and shipping sectors.” Source: RevenueBase Database · checked Sep 28, 2026
8	Watson Farley & Williams	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,331 contacts →
	Partial evidence “Watson Farley & Williams is a leading international law firm advising clients operating in the energy, infrastructure and transport sectors.” Source: RevenueBase Database · checked Sep 28, 2026
9	Wallem Group	Partial evidence	Hong KongHQ checked Sep 28, 2026	501-1,000	1,313 contacts →
	Partial evidence “First established in Shanghai in 1903, Wallem Group has a 120-year maritime heritage with a presence in 19 countries globally.” Source: RevenueBase Database · checked Sep 28, 2026
10	Hill Dickinson LLP	Partial evidence	Liverpool, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,231 contacts →
	Partial evidence “An unpredictable world calls for a progressive-thinking law firm that’s aligned to your ambitions.” Source: RevenueBase Database · checked Sep 28, 2026
11	Hinshaw & Culbertson LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	501-1,000	1,188 contacts →
	Partial evidence “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
12	Rechtsanwaltskanzlei	Indirect evidence	United StatesHQ checked Sep 28, 2026	n/a	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 28, 2026
13	Stoel Rives LLP	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	501-1,000	864 contacts →
	Indirect evidence “Stoel Rives is a leading U.S.” Source: RevenueBase Database · checked Sep 28, 2026
14	Phelps Dunbar LLP	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 28, 2026	501-1,000	824 contacts →
	Indirect evidence “As an AmLaw 200 firm, Phelps provides strategic legal counsel to businesses across the South, with 17 offices in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
15	Stibbe	Partial evidence	Brussels, BelgiumHQ checked Sep 28, 2026	501-1,000	811 contacts →
	Partial evidence “Stibbe is a leading independent, international law firm with main offices in Amsterdam, Brussels and Luxembourg, and a branch office in London.” Source: RevenueBase Database · checked Sep 28, 2026
16	Herzog	Partial evidence	Tel Aviv, IsraelHQ checked Sep 28, 2026	501-1,000	749 contacts →
	Partial evidence “Herzog Fox & Neeman is Israel’s largest law firm and has earned a reputation as market leader, evidenced by consistent top-tier rankings in both international and Israeli legal…” Source: RevenueBase Database · checked Sep 28, 2026
17	Marval O'farrell, Mairal	Indirect evidence	Ciudad De Buenos Aires, ArgentinaHQ checked Sep 28, 2026	501-1,000	688 contacts →
	Indirect evidence “Fundada en 1923, Marval O’Farrell Mairal es la firma legal más grande de la Argentina, líder en el país y también en Latinoamérica.” Source: RevenueBase Database · checked Sep 28, 2026
18	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 28, 2026
19	Eckert Seamans	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	501-1,000	570 contacts →
	Indirect evidence “Eckert Seamans Cherin & Mellott LLC has lawyers in offices throughout the United States, including Harrisburg, Philadelphia, and Pittsburgh, Pennsylvania; Boston, Massachusetts…” Source: RevenueBase Database · checked Sep 28, 2026
20	Gorrissen Federspiel	Partial evidence	Copenhagen V, DenmarkHQ checked Sep 28, 2026	501-1,000	559 contacts →
	Partial evidence “Gorrissen Federspiel is among the leading Danish law firms with distinguished international relations.” Source: RevenueBase Database · checked Sep 28, 2026
21	Lavery	Partial evidence	Montréal, QC, CanadaHQ checked Sep 28, 2026	201-500	546 contacts →
	Partial evidence “Over a century of legal advice to domestic and international organizations has made Lavery Lawyers the leading independent law firm in Quebec (Canadian Lawyer).” Source: RevenueBase Database · checked Sep 28, 2026
22	Michelmores	Partial evidence	United KingdomHQ checked Sep 28, 2026	201-500	531 contacts →
	Partial evidence “Michelmores is the destination law firm for the ambitious, the imaginative and the distinctive.” Source: RevenueBase Database · checked Sep 28, 2026
23	Marcelo Tostes Advogados	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	201-500	518 contacts →
	Indirect evidence “Fundado em o Marcelo Tostes Advogados firmou-se como um escritório de advocacia empresarial de excelência.” Source: RevenueBase Database · checked Sep 28, 2026
24	VDA Vieira DE Almeida	Partial evidence	Lisbon, PortugalHQ checked Sep 28, 2026	201-500	516 contacts →
	Partial evidence “Vieira de Almeida (VdA) is a leading international law firm with over 45 years of history, known for its unrivalled track record in corporate legal advice and for its innovative…” Source: RevenueBase Database · checked Sep 28, 2026
25	Morgan & Morgan	Partial evidence	Costa Del Este, PanamaHQ checked Sep 28, 2026	501-1,000	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 28, 2026

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: environmental maritime 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 environmental maritime law firms.
Partial evidence: Its own public description names part of environmental maritime law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental maritime 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 8,659 environmental maritime law firms worldwide

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Environmental maritime law firms worldwide at a glance

As of Sep 28, 2026

39.8%Verified-email coverage

12.8Average contacts per company

1-10Median size (employees)

2.9%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

5,350

11-50

2,723

51-200

415

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 environmental maritime 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 environmental maritime law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “environmental maritime 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 environmental maritime 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 environmental maritime 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, 44,096 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 28, 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.

Environmental maritime law firms by location

74 lists · largest first

Every Environmental maritime law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 environmental maritime 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 environmental maritime law firms are there worldwide?

RevenueBase identified 8,659 environmental maritime 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 environmental maritime law firms?

Brazil leads with 1,204 companies, followed by the United States (762) and Italy (481). Every environmental maritime law firms list by country and city is linked on this page.

Which city has the most environmental maritime law firms?

Sao Paulo leads with 248 headquartered companies, followed by Paris (200) and Istanbul (159).

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 44,096 verified decision-maker contacts tracked across these 8,659 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 28, 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.