Company lists · Data verified August 2026

Top 25 Advertising law firms based in the United States

Name: Advertising 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 2,421 companies tracked

There are 2,421 advertising law firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 49,201 professional contacts across them, including 26,841 with verified work emails and 26,827 with mobile numbers. New York is the largest hub.

This list covers advertising 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.

2,421Companies

49,201Contacts tracked

26,841Verified emails

26,827Mobile numbers

Unlock all 2,421 companies Free account · no credit card · 2 minutes

The 25 largest advertising law firms based in the United States

Ranked by team size

Top 25 of 2,421 advertising 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	Nelson Mullins Riley & Scarborough	Columbia, SC	1,001-5,000	2,036	1,215
2	Venable LLP	Washington, DC	1,001-5,000	1,791	1,184
3	Ballard Spahr LLP	Washington D.C., DC	1,001-5,000	1,720	1,097
4	Crowell & Moring	Chicago, IL	1,001-5,000	1,626	1,053
5	Clark Hill LAW	Grand Rapids, MI	1,001-5,000	1,355	836
6	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Washington, DC	501-1,000	942	534
7	Fredrikson & Byron, P.A	Mankato, MN	501-1,000	852	586
8	Hall Booth Smith, P.C	Missoula, MT	501-1,000	802	609
9	Adams & Reese	Washington, DC	501-1,000	766	356
10	Kelley Drye & Warren LLP	Los Angeles, CA	501-1,000	686	450
11	Honigman LLP	Kalamazoo, MI	501-1,000	666	525
12	Knobbe Martens	San Francisco, CA	501-1,000	618	370
13	Wiley Rein LLP	Washington, DC	501-1,000	576	395
14	Eckert Seamans	Boston, MA	501-1,000	567	312
15	Smith Gambrell Russell	Jacksonville, FL	501-1,000	558	397
16	Wolf Greenfield	New York, NY	201-500	432	311
17	Porter Wright Morris & Arthur LLP	Dayton, OH	201-500	418	246
18	Schwabe	Salem, OR	201-500	400	97
19	Sandberg Phoenix	Alachua, FL	201-500	389	248
20	Varnum LLP	Birmingham, MI	201-500	389	36
21	Post & Schell, P.C	Wheeling, WV	201-500	335	182
22	Mcnees Wallace & Nurick	Lancaster, PA	201-500	315	205
23	Howard & Howard Attorneys Pllc	Chicago, IL	201-500	307	158
24	Banner Witcoff	Chicago, IL	201-500	286	170
25	Messerli Kramer, P.A	Minneapolis, MN	201-500	286	146

Showing 25 of 2,421 advertising law firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 26,841 reachable decision-makers.

Free account · no credit card

See all 2,421 companies

Advertising law firms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 183 HQs

26,827Contacts with mobile numbers

153Emails re-verified in last 30 days

Companies by employee count

1-10

1,553

11-50

629

51-200

179

201-500

501-1,000

1,001-5,000

Advertising law firms by metro

Metro	Companies
Advertising law firms in New York	183
Advertising law firms in Washington	91
Advertising law firms in Los Angeles	80
Advertising law firms in Chicago	77
Advertising law firms in Houston	66
Advertising law firms in Dallas	50
Advertising law firms in Atlanta	43
Advertising law firms in San Francisco	38

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 “advertising 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; 153 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 advertising law firms are there based in the United States?

There are 2,421 advertising law firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Nelson Mullins Riley & Scarborough, headquartered in Columbia, tops this list with the largest team on record.

Which city has the most advertising law firms?

New York leads with 183 headquartered companies, followed by Washington (91) and Los Angeles (80).

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 26,841 verified decision-maker contacts tracked across these 2,421 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.

Ready to reach these companies? Verified emails and direct dials for all 2,421 advertising law firms based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Advertising law firms by geography

Browse the directory

Browse: Companies home · All United States lists · All Advertising law firms lists · New lists

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.