Company lists · Data refreshed November 2026

Top 25 Full-service communications agencies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 75,214 companies tracked

RevenueBase identified 75,214 company matches for full-service communications agencies worldwide as of November 2026 and tracks 758,493 professional contacts across them, including 179,137 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for full-service communications 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 6, 2026. Country and city lists for full-service communications 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 6, 2026 How this list was built

75,214Companies

758,493Contacts tracked

179,137Verified emails

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The 25 largest full-service communications agencies worldwide

Ranked by team size

Top 25 of 75,214 company matches for full-service communications agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Edelman	Exact match	New York, GA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,721 contacts →
	Exact match “Edelman is a global communications firm that partners with businesses and organizations to evolve, promote and protect their brands and reputations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	LEO Burnett	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	5,001-10,000	5,785 contacts →
	Exact match “Leo Burnett is a communications agency powered by its HumanKind operating system, with the belief that creativity, data and technology work together to transform human behavior…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
4	Weber Shandwick	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,318 contacts →
	Exact match “Weber Shandwick is the earned-first global communications agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Thompson	Exact match	New York, United StatesHQ recorded Nov 6, 2026	5,001-10,000	3,822 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	OTHER	Exact match	Toronto, FL, CanadaHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
7	HAVAS	Exact match	Puteaux, FranceHQ recorded Nov 6, 2026	10001+	2,945 contacts →
	Exact match “Founded in 1835 in Paris, Havas is one of the world’s largest global communications groups, with nearly people in over 100 countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Mccann	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	2,939 contacts →
	Exact match “We build enduring brands that move people and markets through the radical creativity of Truth Well Told™.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Omnicom	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	2,762 contacts →
	Exact match “Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Mccann Worldgroup	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	2,664 contacts →
	Exact match “McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
12	Omnicom Media Group	Exact match	New York, United StatesHQ recorded Nov 6, 2026	10001+	2,447 contacts →
	Exact match “Omnicom Media Group (OMG), the media services division of Omnicom Group Inc, delivers transformational experiences for consumers, clients, and talent.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Almacén	Exact match	Olivos, ArgentinaHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
14	Adfactors PR	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	2,056 contacts →
	Exact match “Adfactors PR, founded in 1997, is India's largest Public Relations firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Improfit	Exact match	Montevideo, UruguayHQ recorded Nov 6, 2026	n/a	1,851 contacts →
	Exact match “Improfit es una agencia de comunicación corporativa y organizacional fundada en en Montevideo, Uruguay.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Young & Rubicam	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	1,743 contacts →
	Exact match “Y&R is a leading global marketing communications company, with more than 189 offices in 90+ countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Hill & Knowlton	Exact match	Edmonton, AB, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,430 contacts →
	Exact match “Hill & Knowlton is a strategic and creative partner to drive breakthrough opportunities for growth and value creation, advance corporate strategy, and build reputation capital and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	FSB Comunicação	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 6, 2026	501-1,000	1,387 contacts →
	Exact match “FSB Comunicações is an Integrated Communications agency focused on results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Serviceplan Group	Exact match	Munich, GermanyHQ recorded Nov 6, 2026	5,001-10,000	1,377 contacts →
	Exact match “Serviceplan Group is the largest independent, partner-led agency group in Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
21	Hakuhodo INC	Exact match	Minato-ku, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,310 contacts →
	Exact match “Founded in 1895, Hakuhodo Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	APS Group	Exact match	Stockport, United KingdomHQ recorded Nov 6, 2026	501-1,000	1,303 contacts →
	Exact match “We’ve been delivering marketing and communications since 1961.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	CMI Media Group	Exact match	Philadelphia, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,300 contacts →
	Exact match “CMI Media Group, a WPP company, is a global, full-service media agency focused solely on health, wellness, life sciences and pharmaceutical marketing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	MSL Global	Exact match	Paris, FranceHQ recorded Nov 6, 2026	1,001-5,000	1,079 contacts →
	Exact match “MSL is the most powerful influence engine for brands, companies and leaders, a global public relations and strategic communications agency, part of Publicis Groupe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Quadcubes	Exact match	Kozhikode, IndiaHQ recorded Nov 6, 2026	n/a	1,056 contacts →
	Exact match “We're not that yet another, ordinary marketing agency!” Recorded in the RevenueBase company graph · Nov 6, 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 communications 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 75,214 full-service communications agencies worldwide

See the full list, filter by size, metro and specialty, and access 179,137 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Full-service communications agencies worldwide at a glance

As of Nov 6, 2026

23.6%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

1.9%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

49,054

11-50

21,382

51-200

3,348

201-500

675

501-1,000

177

1,001-5,000

116

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 communications agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “full-service communications 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 179,137 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 6, 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 communications agencies by location

358 lists · largest first

Every Full-service communications 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 communications agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many full-service communications agencies are there worldwide?

RevenueBase identified 75,214 company matches for full-service communications 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?

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

Which country has the most full-service communications agencies?

The United States leads with 12,682 companies, followed by Brazil (4,457) and the United Kingdom (3,903). Every full-service communications agencies list by country and city is linked on this page.

Which city has the most full-service communications agencies?

London leads with 1442 company records, followed by Sao Paulo (1233) and New York (1079).

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 179,137 professional contacts with verified work emails tracked across these 75,214 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 6, 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 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.