Company lists · Data verified August 2026

Top 25 Antitrust law firms based in Washington, United States

Name: Antitrust law firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 51 companies tracked

There are 51 antitrust law firms headquartered in Washington, United States (RevenueBase, August 2026). RevenueBase tracks 6,831 professional contacts across them, including 4,333 with verified work emails and 3,568 with mobile numbers. New York is the largest hub.

This list covers antitrust law firms headquartered in Washington, 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.

51Companies

6,831Contacts tracked

4,333Verified emails

3,568Mobile numbers

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The 25 largest antitrust law firms based in Washington, United States

Ranked by team size

Top 25 of 51 antitrust law firms based in Washington, 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	Arnold & Porter	Washington, DC	1,001-5,000	2,324	1,648
2	Venable LLP	Washington, DC	1,001-5,000	1,791	1,184
3	Adams & Reese	Washington, DC	501-1,000	766	356
4	Wiley Rein LLP	Washington, DC	501-1,000	576	395
5	Robbins Geller Rudman & Dowd LLP	Washington, DC	201-500	339	220
6	Dickstein Shapiro LLP	Washington, DC	501-1,000	292	52
7	Hausfeld	Washington, DC	201-500	267	207
8	Ellis George LLP	Washington, DC	51-200	78	48
9	Constantine Cannon LLP	Washington, DC	51-200	74	43
10	Rule Garza Howley LLP	Washington, DC	11-50	34	34
11	Southbank Legal	Washington, DC	11-50	29	27
12	Stein Mitchell Beato & Missner LLP	Washington, DC	51-200	26	19
13	Shinder Cantor Lerner LLP	Washington, DC	11-50	20	15
14	Veritas LAW	Washington, DC	1-10	16	7
15	Trade Pacific Pllc	Washington, DC	11-50	14	12
16	Levine, Blaszak, Block & Boothby, LLP	Washington, DC	11-50	13	9
17	Jacobson Lopez Pllc	Washington, DC	1-10	11	10
18	Rock Creek Trade LLP	Washington, DC	1-10	11	6
19	Winton & Chapman Pllc	Washington, DC	1-10	11	4
20	Akrivis LAW Group, Pllc	Washington, DC	1-10	10	10
21	Freeh Sporkin & Sullivan LLP	Washington, DC	11-50	9	3
22	Franchise Lawyer	Washington, DC	1-10	9	1
23	Baker & Miller Pllc	Washington, DC	11-50	6	6
24	BLL LLP	Washington, DC	1-10	3	2
25	Temple LAW Offices	Washington, DC	1-10	3	1

Showing 25 of 51 antitrust law firms based in Washington, United States

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Antitrust law firms based in Washington, United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 74 HQs

3,568Contacts with mobile numbers

23Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Antitrust law firms by metro in the United States

Metro	Companies
Antitrust law firms in New York	74
Antitrust law firms in Washington	51
Antitrust law firms in Los Angeles	32
Antitrust law firms in Chicago	21
Antitrust law firms in Houston	18
Antitrust law firms in San Francisco	17
Antitrust law firms in Dallas	17
Antitrust law firms in Boston	14

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 “antitrust law firms”, with match quality audited by blind human judging, and headquartered in Washington, 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; 23 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 antitrust law firms are there based in Washington, United States?

There are 51 antitrust law firms headquartered in Washington, United States as of August 2026 (RevenueBase).

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 antitrust law firms?

New York leads with 74 headquartered companies, followed by Washington (51) and Los Angeles (32).

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 4,333 verified decision-maker contacts tracked across these 51 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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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.