Company lists · Data refreshed September 2026

Top 25 Business to business advertising agencies based in the United States

Name: Business to business advertising agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 38,660 companies tracked

RevenueBase identified 38,660 business to business advertising agencies headquartered in the United States as of September 2026 and tracks 363,667 professional contacts across them, including 101,923 with verified work emails and 127,224 with mobile numbers. New York is the largest hub.

This list covers business to business advertising agencies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 2026.

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 23, 2026 86% judged on-target in blind review

38,660Companies

363,667Contacts tracked

101,923Verified emails

127,224Mobile numbers

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The 25 largest business to business advertising agencies based in the United States

Ranked by team size

Top 25 of 38,660 business to business advertising agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business to business advertising agencies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	QUAD	Indirect evidence	Sussex, WI, United StatesHQ checked Sep 23, 2026	10001+	9,567 contacts →
	Indirect evidence “Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online.” Source: RevenueBase Database · checked Sep 23, 2026
2	IPG Mediabrands	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	4,963 contacts →
	Indirect evidence “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Source: RevenueBase Database · checked Sep 23, 2026
3	Omnicom Media Group	Indirect evidence	New York, United StatesHQ checked Sep 23, 2026	10001+	3,989 contacts →
	Indirect evidence “Omnicom Media Group (OMG), the media services division of Omnicom Group Inc, delivers transformational experiences for consumers, clients, and talent.” Source: RevenueBase Database · checked Sep 23, 2026
4	Mccann Worldgroup	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	3,874 contacts →
	Indirect evidence “McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.” Source: RevenueBase Database · checked Sep 23, 2026
5	Thompson	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	3,574 contacts →
	Indirect evidence “J.” Source: RevenueBase Database · checked Sep 23, 2026
6	Spark Foundry	Indirect evidence	NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,822 contacts →
	Indirect evidence “As one of the fastest-growing global media agency networks, Spark Foundry is not beholden to legacy.” Source: RevenueBase Database · checked Sep 23, 2026
7	Digitas North America	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,654 contacts →
	Indirect evidence “Digitas is the Networked Experience Agency, built on the vision that we create magnetic experiences that earn the right for brands to exist in human networks.” Source: RevenueBase Database · checked Sep 23, 2026
8	GREY	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	2,648 contacts →
	Indirect evidence “Grey’s mission is to create Famously Effective ideas that move people, business, and the world forward-harnessing the power of creativity to solve business problems and deliver…” Source: RevenueBase Database · checked Sep 23, 2026
9	Publicis	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,531 contacts →
	Indirect evidence “You can either adapt to change, ignore it or lead it.” Source: RevenueBase Database · checked Sep 23, 2026
10	Best Version Media	Indirect evidence	Brookfield, WI, United StatesHQ checked Sep 23, 2026	n/a	2,416 contacts →
	Indirect evidence “Best Version Media simplifies local marketing by offering small and midsize businesses a complete mix of solutions to keep them top-of-mind, from community magazine ads to digital…” Source: RevenueBase Database · checked Sep 23, 2026
11	Horizon Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,368 contacts →
	Indirect evidence “Horizon Media is a leader in driving business-based outcomes for marketers.” Source: RevenueBase Database · checked Sep 23, 2026
12	R GA	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,189 contacts →
	Indirect evidence “R/GA is an independent creative innovation company for the intelligence age.” Source: RevenueBase Database · checked Sep 23, 2026
13	Omnicom	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	1,727 contacts →
	Indirect evidence “Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.” Source: RevenueBase Database · checked Sep 23, 2026
14	Wieden Kennedy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,711 contacts →
	Indirect evidence “Wieden+Kennedy is an independent, global creative company that has built and transformed some of the world’s most well-known, exciting brands for over forty years.” Source: RevenueBase Database · checked Sep 23, 2026
15	Bbdo Worldwide	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	1,501 contacts →
	Indirect evidence “Do Big Things” Source: RevenueBase Database · checked Sep 23, 2026
16	Creative Circle	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	1,473 contacts →
	Indirect evidence “Everforth Creative Circle, part of the Everforth ™ network, delivers marketing and creative solutions to help companies solve business challenges of all sizes.” Source: RevenueBase Database · checked Sep 23, 2026
17	Vaynermedia	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,395 contacts →
	Indirect evidence “VaynerMedia is a contemporary global creative and media agency with an expertise in driving relevance for clients and delivering impactful business results.” Source: RevenueBase Database · checked Sep 23, 2026
18	TBC	Strong evidence	Baltimore, MD, United StatesHQ checked Sep 23, 2026	n/a	1,255 contacts →
	Strong evidence “TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.” Source: RevenueBase Database · checked Sep 23, 2026
19	Tbwa Worldwide	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	1,252 contacts →
	Indirect evidence “TBWA is The Disruption Company®.” Source: RevenueBase Database · checked Sep 23, 2026
20	CMI Media Group	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,236 contacts →
	Indirect evidence “CMI Media Group, a WPP company, is a global, full-service media agency focused solely on health, wellness, life sciences and pharmaceutical marketing.” Source: RevenueBase Database · checked Sep 23, 2026
21	Mccann	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	1,207 contacts →
	Indirect evidence “We build enduring brands that move people and markets through the radical creativity of Truth Well Told™.” Source: RevenueBase Database · checked Sep 23, 2026
22	Tinuiti	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,173 contacts →
	Indirect evidence “Tinuiti is a media agency that not only builds brands, but architects business outcomes.” Source: RevenueBase Database · checked Sep 23, 2026
23	FCB Health NEW York	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,173 contacts →
	Indirect evidence “Part of Omnicom Health, FCB Health New York is a full-service agency with more than 40 years of experience marketing to healthcare professionals, patients and consumers.” Source: RevenueBase Database · checked Sep 23, 2026
24	FCB Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	1,080 contacts →
	Indirect evidence “FCB is a global creative powerhouse committed to transforming brands, businesses, and lives through the economic power of creativity.” Source: RevenueBase Database · checked Sep 23, 2026
25	Mediaocean	Strong evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,050 contacts →
	Strong evidence “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: RevenueBase Database · checked Sep 23, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: business to business advertising agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names business to business advertising agencies.
Partial evidence: Its own public description names part of business to business advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business to business advertising agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 38,660 business to business advertising agencies based in the United States

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Business to business advertising agencies based in the United States at a glance

As of Sep 23, 2026

28.0%Verified-email coverage

35.0%Mobile-number coverage

9.4Average contacts per company

1-10Median size (employees)

5.0%Largest-city concentration · New York

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

28,038

11-50

8,753

51-200

1,394

201-500

268

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

76,3500–30

23,34531–60

1,29861–90

7690–180

854180+

Company record updated

Median 86.0d

00–30

97,10231–60

156,68361–90

91,71490–180

18,168180+

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 business to business advertising agencies, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “business to business advertising agencies”. 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 business to business advertising agencies), 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 business to business advertising agencies, 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 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, 101,923 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 23, 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.

Business to business advertising agencies by metro

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 business to business advertising agencies, 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 business to business advertising agencies are there based in the United States?

RevenueBase identified 38,660 business to business advertising agencies 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?

QUAD, headquartered in Sussex, tops this list with the largest team on record.

Which city has the most business to business advertising agencies?

New York leads with 1917 headquartered companies, followed by Los Angeles (1313) and Miami (825).

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 101,923 verified decision-maker contacts tracked across these 38,660 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 23, 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.