Company lists · Data refreshed November 2026

Top 25 Full-service advertising agencies worldwide

Name: Full-service advertising agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 40,960 companies tracked

RevenueBase identified 40,960 company matches for full-service advertising agencies worldwide as of November 2026 and tracks 344,070 professional contacts across them, including 63,550 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for full-service advertising agencies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026. Country and city lists for full-service advertising agencies follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

40,960Companies

344,070Contacts tracked

63,550Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest full-service advertising agencies worldwide

Ranked by team size

Top 25 of 40,960 company matches for full-service advertising agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	10001+	4,396 contacts →
	Exact match “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Thompson	Exact match	New York, United StatesHQ recorded Nov 5, 2026	5,001-10,000	3,822 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Mediacom	Exact match	London, NY, United KingdomHQ recorded Nov 5, 2026	5,001-10,000	3,500 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	OTHER	Exact match	Toronto, FL, CanadaHQ recorded Nov 5, 2026	n/a	3,078 contacts →
	Exact match “Other.™ is a modern integrated media agency built for marketers who need more from their agency partner.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	GREY	Exact match	New York, United StatesHQ recorded Nov 5, 2026	5,001-10,000	2,800 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,506 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Almacén	Exact match	Olivos, ArgentinaHQ recorded Nov 5, 2026	n/a	2,401 contacts →
	Exact match “Agencia de Publicidad fundada en 2003 por Daniel Onorato y Claudio Lucini.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Bbdo Worldwide	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	5,001-10,000	1,655 contacts →
	Exact match “Do Big Things” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Nov 5, 2026	n/a	1,328 contacts →
	Exact match “TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Hakuhodo INC	Exact match	Minato-ku, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,310 contacts →
	Exact match “Founded in 1895, Hakuhodo Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Mediaocean	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,111 contacts →
	Exact match “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	IVE Group	Exact match	Sydney, AustraliaHQ recorded Nov 5, 2026	1,001-5,000	933 contacts →
	Exact match “IVE Group is Australia’s largest diversified marketing company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Smartly	Exact match	Helsinki, FinlandHQ recorded Nov 5, 2026	501-1,000	922 contacts →
	Exact match “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Mullenlowe Lintas Group	Exact match	Mumbai, IndiaHQ recorded Nov 5, 2026	201-500	809 contacts →
	Exact match “MullenLowe Lintas Group is one of India’s largest and most admired communication groups.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Laboratory	Exact match	Toronto, ON, CanadaHQ recorded Nov 5, 2026	n/a	794 contacts →
	Exact match “We develop strategic, creative solutions that aren’t afraid of challenging tradition, because the way we see it – great marketing shouldn’t have to feel like marketing.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	COX Media	Exact match	Atlanta, KS, United StatesHQ recorded Nov 5, 2026	501-1,000	788 contacts →
	Exact match “Cox Media is now Spectrum Reach.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Pt. Indolima Perkasa	Exact match	Jakarta Selatan, IndonesiaHQ recorded Nov 5, 2026	5,001-10,000	778 contacts →
	Exact match “Indolima is a privately owned company established in 1995 comprising 12 branch offices throughout Indonesian Archipelago.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	DONER	Exact match	Southfield, MI, United StatesHQ recorded Nov 5, 2026	501-1,000	748 contacts →
	Exact match “Doner unlocks all the tools of Modern marketing to build lasting connections with every day, Main Street consumers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	TING	Exact match	Mumbai, IndiaHQ recorded Nov 5, 2026	501-1,000	707 contacts →
	Exact match “ting is an integrated creative agency established in 2009, built for brands that want strategy, ideas, media and production working as one.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Betc Havas	Exact match	Sao Paulo, BrazilHQ recorded Nov 5, 2026	501-1,000	651 contacts →
	Exact match “A BETC foi fundada em Paris em 1994 e segue sendo reconhecida como uma das agências mais criativas e premiadas do mundo.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Barkleyokrp	Exact match	Kansas City, MO, United StatesHQ recorded Nov 5, 2026	501-1,000	649 contacts →
	Exact match “BarkleyOKRP is one of the largest independent ad agencies in the U.S, matching scale with soul to help build brands like Burger King, Corona Premier, Metro by T-Mobile, Planet…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Ogilvy South Africa	Exact match	Cape Town, South AfricaHQ recorded Nov 5, 2026	501-1,000	617 contacts →
	Exact match “In 1948, David Ogilvy founded the agency that would become Ogilvy & Mather.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Stream Companies	Exact match	Malvern, CA, United StatesHQ recorded Nov 5, 2026	501-1,000	600 contacts →
	Exact match “Stream Companies is a full service advertising agency that specializes in launching, positioning, and long term management of brands on full service contracts and a…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Tombras	Exact match	Knoxville, NY, United StatesHQ recorded Nov 5, 2026	501-1,000	541 contacts →
	Exact match “Tombras is a 550+ person, full-service agency with a digital mindset.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	R&r Partners	Exact match	Las Vegas, United StatesHQ recorded Nov 5, 2026	201-500	520 contacts →
	Exact match “R&R partners isn’t our name, it’s our promise.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “full-service advertising agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 40,960 full-service advertising agencies worldwide

See the full list, filter by size, metro and specialty, and access 63,550 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Full-service advertising agencies worldwide at a glance

As of Nov 5, 2026

18.5%Verified-email coverage

8.4Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

25,652

11-50

12,443

51-200

1,933

201-500

459

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage: Every country. Country and city lists for full-service advertising agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “full-service advertising agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 63,550 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Full-service advertising agencies by location

253 lists · largest first

Every Full-service advertising agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “full-service advertising agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many full-service advertising agencies are there worldwide?

RevenueBase identified 40,960 company matches for full-service advertising agencies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

IPG Mediabrands tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most full-service advertising agencies?

The United States leads with 7,512 companies, followed by India (3,651) and Brazil (1,956). Every full-service advertising agencies list by country and city is linked on this page.

Which city has the most full-service advertising agencies?

London leads with 476 company records, followed by Sao Paulo (401) and Istanbul (381).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 63,550 professional contacts with verified work emails tracked across these 40,960 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 40,960 full-service advertising agencies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.