Company lists · Data refreshed September 2026

Top 25 Regulatory compliance law firms worldwide

RevenueBase identified 8,574 regulatory compliance law firms worldwide as of September 2026 and tracks 98,230 professional contacts across them, including 34,293 with verified work emails and 21,313 with mobile numbers. Brazil is the largest market and Sao Paulo the largest hub.

This list covers regulatory compliance 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 5, 2026. Country and city lists for regulatory compliance 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 5, 2026 86% judged on-target in blind review
8,574Companies
98,230Contacts tracked
34,293Verified emails
21,313Mobile numbers
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The 25 largest regulatory compliance law firms worldwide

Ranked by team size
Top 25 of 8,574 regulatory compliance law firms worldwide, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to regulatory compliance 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLondon, United KingdomHQ checked Sep 5, 2026n/a6,284 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 5, 2026
2Partial evidenceWashington, DC, United StatesHQ checked Sep 5, 20261,001-5,0002,333 contacts →

Partial evidence

“Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.”

Source: RevenueBase Database · checked Sep 5, 2026
3Indirect evidenceSão Paulo, BrazilHQ checked Sep 5, 20261,001-5,0002,267 contacts →

Indirect evidence

“Desde a NWADV transforma desafios jurídicos complexos em decisões mais seguras para empresas nacionais e internacionais.”

Source: RevenueBase Database · checked Sep 5, 2026
4Strong evidenceMadurai, IndiaHQ checked Sep 5, 20261,001-5,0002,064 contacts →

Strong evidence

“Aparajitha: Revolutionising India's Regulatory Compliance Space With 25 years of experience, Aparajitha covers compliance for over establishments, factories, and 52 lakh contract…”

Source: RevenueBase Database · checked Sep 5, 2026
5Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 5, 20261,001-5,0002,041 contacts →

Partial evidence

“Dechert is the law firm that helps business leaders lead.”

Source: RevenueBase Database · checked Sep 5, 2026
6Partial evidenceColumbia, SC, United StatesHQ checked Sep 5, 20261,001-5,0002,012 contacts →

Partial evidence

“Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.”

Source: RevenueBase Database · checked Sep 5, 2026
7Strong evidenceWashington, DC, United StatesHQ checked Sep 5, 20261,001-5,0001,790 contacts →

Strong evidence

“Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…”

Source: RevenueBase Database · checked Sep 5, 2026
8Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 5, 20261,001-5,0001,682 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 5, 2026
9Partial evidenceSão Paulo, BrazilHQ checked Sep 5, 20261,001-5,0001,580 contacts →

Partial evidence

“TozziniFreire is one of the leading legal services organizations in Latin America, operating in all areas of Business Law and with a significant track record in serving national…”

Source: RevenueBase Database · checked Sep 5, 2026
10Indirect evidenceDetroit, MI, United StatesHQ checked Sep 5, 20261,001-5,0001,343 contacts →

Indirect evidence

“At Clark Hill, our value proposition is simple.”

Source: RevenueBase Database · checked Sep 5, 2026
11Partial evidenceLiverpool, United KingdomHQ checked Sep 5, 20261,001-5,0001,231 contacts →

Partial evidence

“An unpredictable world calls for a progressive-thinking law firm that’s aligned to your ambitions.”

Source: RevenueBase Database · checked Sep 5, 2026
12Strong evidencePittsburgh, PA, United StatesHQ checked Sep 5, 2026501-1,0001,197 contacts →

Strong evidence

“Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…”

Source: RevenueBase Database · checked Sep 5, 2026
13Partial evidenceChicago, IL, United StatesHQ checked Sep 5, 2026501-1,0001,188 contacts →

Partial evidence

“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.”

Source: RevenueBase Database · checked Sep 5, 2026
14Partial evidenceDenver, CO, United StatesHQ checked Sep 5, 2026501-1,000902 contacts →

Partial evidence

“For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.”

Source: RevenueBase Database · checked Sep 5, 2026
15Partial evidenceAtlanta, GA, United StatesHQ checked Sep 5, 2026501-1,000815 contacts →

Partial evidence

“Established in 1989, Hall Booth Smith, P.C.(HBS) is a full-service law firm with 33 offices across the United States.”

Source: RevenueBase Database · checked Sep 5, 2026
16Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 5, 2026501-1,000799 contacts →

Indirect evidence

“Our clients, people and drive for quality are the energisers of our firm.”

Source: RevenueBase Database · checked Sep 5, 2026
17Strong evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,000788 contacts →

Strong evidence

“CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.”

Source: RevenueBase Database · checked Sep 5, 2026
18Partial evidenceAtlanta, GA, United StatesHQ checked Sep 5, 2026201-500746 contacts →

Partial evidence

“FordHarrison LLP - your partner in employment law.”

Source: RevenueBase Database · checked Sep 5, 2026
19Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 2026501-1,000690 contacts →

Partial evidence

“Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…”

Source: RevenueBase Database · checked Sep 5, 2026
20Indirect evidenceSao Paulo, BrazilHQ checked Sep 5, 2026201-500634 contacts →

Indirect evidence

“vezzilapolla.legal foi fundado em 2016, e conta atualmente com cerca de 600 profissionais.”

Source: RevenueBase Database · checked Sep 5, 2026
21Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 5, 2026501-1,000584 contacts →

Indirect evidence

“Businesses and local governments turn to Parker Poe to structure transactions, navigate regulations, and resolve disputes.”

Source: RevenueBase Database · checked Sep 5, 2026
22Indirect evidenceWashington, DC, United StatesHQ checked Sep 5, 2026501-1,000576 contacts →

Indirect evidence

“Founded in 1983, Wiley is a dominant presence in the nation’s capital.”

Source: RevenueBase Database · checked Sep 5, 2026
23Indirect evidenceSao Paulo, BrazilHQ checked Sep 5, 2026201-500518 contacts →

Indirect evidence

“Fundado em o Marcelo Tostes Advogados firmou-se como um escritório de advocacia empresarial de excelência.”

Source: RevenueBase Database · checked Sep 5, 2026
24Indirect evidenceSão Paulo, BrazilHQ checked Sep 5, 2026201-500480 contacts →

Indirect evidence

“Somos um escritório focado no direito empresarial, destacando-se nas áreas Cível, Recuperação de Crédito, Trabalhista, Consumidor, Administrativo, Societário e Contratos…”

Source: RevenueBase Database · checked Sep 5, 2026
25Indirect evidenceCardiff, United KingdomHQ checked Sep 5, 20261,001-5,000453 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 5, 2026

Showing 25 of 8,574 regulatory compliance law firms worldwide

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Regulatory compliance law firms worldwide at a glance

As of Sep 5, 2026
34.9%Verified-email coverage
21.7%Mobile-number coverage
11.5Average contacts per company
1-10Median size (employees)
5.4%Largest-city concentration · Sao Paulo
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
5,978
11-50
2,166
51-200
312
201-500
56
501-1,000
15
1,001-5,000
21

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 regulatory compliance 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
31 countries, largest first: Brazil, the United States, India, Spain, the United Kingdom, Italy, Mexico, France, Germany, Türkiye and 21 more. Country and city lists for regulatory compliance law firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “regulatory compliance 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 regulatory compliance 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 regulatory compliance 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, 34,293 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 between September 5, 2026 and September 14, 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.

Regulatory compliance law firms by location

69 lists · largest first

Every Regulatory compliance 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 regulatory compliance 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 regulatory compliance law firms are there worldwide?

RevenueBase identified 8,574 regulatory compliance 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?

LAW Firm, headquartered in London, tops this list with the largest team on record.

Which country has the most regulatory compliance law firms?

Brazil leads with 1,793 companies, followed by the United States (1,639) and India (864). Every regulatory compliance law firms list by country and city is linked on this page.

Which city has the most regulatory compliance law firms?

Sao Paulo leads with 459 headquartered companies, followed by London (191) and Paris (140).

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 34,293 verified decision-maker contacts tracked across these 8,574 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 5, 2026 and September 14, 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.