Company lists · Data refreshed September 2026
Top 25 Regulatory compliance law firms based in the United States
RevenueBase identified 1,639 regulatory compliance law firms headquartered in the United States as of September 2026 and tracks 33,391 professional contacts across them, including 19,001 with verified work emails and 17,329 with mobile numbers. New York is the largest hub.
This list covers regulatory compliance law firms headquartered in the United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 regulatory compliance law firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,333 | ||||
“Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,041 | ||||
“Dechert is the law firm that helps business leaders lead.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,012 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,790 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,682 | ||||
“Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,343 | ||||
“At Clark Hill, our value proposition is simple.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,197 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,188 | ||||
“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 902 | ||||
“For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 815 | ||||
“Established in 1989, Hall Booth Smith, P.C.(HBS) is a full-service law firm with 33 offices across the United States.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 788 | ||||
“CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 746 | ||||
“FordHarrison LLP - your partner in employment law.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 690 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 584 | ||||
“Businesses and local governments turn to Parker Poe to structure transactions, navigate regulations, and resolve disputes.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 576 | ||||
“Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 426 | ||||
“A full-service law firm representing clients across the United States and internationally, Stites & Harbison, PLLC is known as a preeminent firm managing sophisticated…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 336 | ||||
“For over 50 years, Post & Schell’s attorneys have combined the operational knowledge and insight into the industries they represent with creative legal solutions – and helped…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 308 | ||||
“At Comply, we pride ourselves on being the champion for compliance professionals.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 307 | ||||
“Since 1935, McNees Wallace & Nurick has been a trusted, client-focused law firm delivering practical, results-driven legal solutions to businesses, individuals, and organizations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Keller And Heckman LLPStrong evidence | 230 | |||
“Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 213 | ||||
“Founded by John F.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 192 | ||||
“As a collaborative and integrated group of attorneys, we work as a unified team, not as sole practitioners.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 190 | ||||
“At ComplyRight®, our mission is to empower employers by simplifying the complex world of employment law.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Smith Currie Oles LLPIndirect evidence | 184 | |||
“Smith Currie Oles (SCO) provides comprehensive legal services to all parts of the construction industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 150 | ||||
“We provide innovative compliance solutions by embracing complexity and making it simple.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,639 regulatory compliance law firms based in the United States
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Regulatory compliance law firms based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States 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.
- What we exclude
- Companies whose own description does not clearly place them among regulatory compliance law firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- 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 an evidence 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, 19,001 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 5, 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 metro
- Regulatory compliance law firms in New York108
- Regulatory compliance law firms in Washington106
- Regulatory compliance law firms in Miami40
- Regulatory compliance law firms in Atlanta37
- Regulatory compliance law firms in Los Angeles37
- Regulatory compliance law firms in Chicago34
- Regulatory compliance law firms in Houston32
- Regulatory compliance law firms in Boston28
- Regulatory compliance law firms in Dallas28
- Regulatory compliance law firms in Austin26
Frequently asked
How many regulatory compliance law firms are there based in the United States?
RevenueBase identified 1,639 regulatory compliance law firms headquartered in the United States 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?
Arnold & Porter, headquartered in Washington, tops this list with the largest team on record.
Which city has the most regulatory compliance law firms?
New York leads with 108 headquartered companies, followed by Washington (106) and Miami (40).
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 19,001 verified decision-maker contacts tracked across these 1,639 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 5, 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 SmartSearch, 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.
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