Company lists · Data verified August 2026

Top 25 Data protection law firms based in the United States

Name: Data protection law firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 191 companies tracked

There are 191 data protection law firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 1,083 professional contacts across them, including 594 with verified work emails and 496 with mobile numbers. New York is the largest hub.

This list covers data protection 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. Data current as of August 28, 2026.

191Companies

1,083Contacts tracked

594Verified emails

496Mobile numbers

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The 25 largest data protection law firms based in the United States

Ranked by team size

Top 25 of 191 data protection law firms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Mullen Coughlin LLC	Devon, PA	201-500	213	172
2	Zwillgen	Washington, DC	51-200	72	62
3	Compliancepoint	Duluth, GA	51-200	52	33
4	Ardent Privacy	Catonsville, MD	11-50	34	11
5	Bunsow DE Mory LLP	Redwood City, CA	11-50	28	25
6	Troutman Amin LLP	Irvine, CA	11-50	27	15
7	Infolawgroup LLP	Washington, DC	11-50	26	19
8	MAC Murray & Shuster LLP	New Albany, OH	11-50	25	16
9	Fllr Consulting	Alpharetta, GA	11-50	25	15
10	Security Validation Secval Mssp	Oradell, NJ	51-200	25	10
11	Hintze LAW Pllc	Seattle, WA	11-50	24	16
12	R Digital	New York, NY	11-50	24	3
13	CSR Privacy Solutions, INC	Jensen Beach, FL	11-50	22	5
14	Meru Data	Houston, TX	11-50	19	2
15	The LAW Offices Of Jibrael S. Hindi	Wilton Manors, FL	11-50	15	12
16	Truevault	San Francisco, CA	11-50	14	6
17	Privageo	Irvine, CA	11-50	12	6
18	Octillo	Buffalo, NY	11-50	11	11
19	The Beckage Firm Tech, Data Security & Privacy LAW Firm	Austin, TX	11-50	11	8
20	Consumer Action LAW Group	Los Angeles, CA	11-50	9	3
21	Lucid Privacy Group	San Francisco, CA	1-10	8	6
22	Dunlap LAW PLC	Richmond, VA	1-10	7	6
23	Hedin LLP	Washington, DC	1-10	6	6
24	Liftoff Mobile, INC	Redwood City	201-500	6	4
25	Stetson Cybergroup	Hauppauge, NY	11-50	6	2

Showing 25 of 191 data protection law firms based in the United States

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Data protection law firms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 16 HQs

496Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

147

11-50

51-200

201-500

501-1,000

Data protection law firms by metro

Metro	Companies
Data protection law firms in New York	16
Data protection law firms in San Francisco	11
Data protection law firms in Washington	10
Data protection law firms in Atlanta	7
Data protection law firms in Austin	6
Data protection law firms in Irvine	4
Data protection law firms in Los Angeles	4
Data protection law firms in Seattle	4

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “data protection law firms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many data protection law firms are there based in the United States?

There are 191 data protection law firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Mullen Coughlin LLC, headquartered in Devon, tops this list with the largest team on record.

Which city has the most data protection law firms?

New York leads with 16 headquartered companies, followed by San Francisco (11) and Washington (10).

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 594 verified decision-maker contacts tracked across these 191 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Data protection law firms by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.