Company lists · Data refreshed September 2026

Top 25 Internal communications agencies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 26,030 companies tracked

RevenueBase identified 26,030 company matches for internal communications agencies worldwide as of September 2026 and tracks 309,463 professional contacts across them, including 72,520 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for internal 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 September 20, 2026. Country and city lists for internal 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 Sep 20, 2026 How this list was built

26,030Companies

309,463Contacts tracked

72,520Verified emails

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The 25 largest internal communications agencies worldwide

Ranked by team size

Top 25 of 26,030 company matches for internal communications agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	LEO Burnett	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	5,385 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 · Sep 20, 2026 · View company records in RevenueBase
2	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	4,963 contacts →
	Exact match “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Mccann Worldgroup	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	3,874 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 · Sep 20, 2026 · View company records in RevenueBase
4	Thompson	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	3,574 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Young & Rubicam	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	1,602 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 · Sep 20, 2026 · View company records in RevenueBase
6	Serviceplan Group	Exact match	Munich, GermanyHQ recorded Sep 20, 2026	5,001-10,000	1,298 contacts →
	Exact match “Serviceplan Group is the largest independent, partner-led agency group in Europe.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	FSB Comunicação	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 20, 2026	501-1,000	1,277 contacts →
	Exact match “FSB Comunicações is an Integrated Communications agency focused on results.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Sep 20, 2026	n/a	1,255 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 · Sep 20, 2026 · View company records in RevenueBase
9	Hakuhodo INC	Exact match	Minato-ku, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,168 contacts →
	Exact match “Founded in 1895, Hakuhodo Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	APS Group	Exact match	Stockport, United KingdomHQ recorded Sep 20, 2026	501-1,000	1,152 contacts →
	Exact match “We’ve been delivering marketing and communications since 1961.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Brasil Monks	Exact match	São Paulo, BrazilHQ recorded Sep 20, 2026	1,001-5,000	963 contacts →
	Exact match “Media.Monks, the digital-first operating brand of S4Capital plc, connects content, data & digital media and technology services across one global team built from the bottom up.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Scholz & Friends	Exact match	Hamburg, GermanyHQ recorded Sep 20, 2026	1,001-5,000	944 contacts →
	Exact match “Scholz & Friends provides an all-inclusive selection of resources to assist client partners in sharing their stories and ideas.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Finn Partners	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	903 contacts →
	Exact match “1300+ People.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	501-1,000	887 contacts →
	Exact match “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Nike Communications, INC	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	n/a	872 contacts →
	Exact match “We are a full-service communications agency behind some of the world’s most revered and iconic brands.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Staffbase	Exact match	Chemnitz, GermanyHQ recorded Sep 20, 2026	501-1,000	859 contacts →
	Exact match “Staffbase is the first AI-native Employee Experience Platform, equipping many of the world’s leading companies with solutions to inspire every employee with motivating…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Mullenlowe Lintas Group	Exact match	Mumbai, IndiaHQ recorded Sep 20, 2026	201-500	851 contacts →
	Exact match “MullenLowe Lintas Group is one of India’s largest and most admired communication groups.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Banco Caroni	Exact match	Caracas, VenezuelaHQ recorded Sep 20, 2026	1,001-5,000	816 contacts →
	Exact match “Responsable de actividades de Mercadeo, Publicidad, Comunicaciones Corporativas, Calidad y Gestión Comercial de la Red de 122 agencias a Nivel Nacional.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Ruder Finn	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	815 contacts →
	Exact match “Ruder Finn is one of the world’s largest global independent integrated marketing and communications agencies, leading at the intersection of technology, human creativity, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Jimjam Ideas	Exact match	Sydney, AustraliaHQ recorded Sep 20, 2026	n/a	621 contacts →
	Exact match “JIMJAM Ideas is an award winning integrated communications agency that believes CONNECTED IDEAS to be the key to powerful and transformative marketing.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Betc Havas	Exact match	Sao Paulo, BrazilHQ recorded Sep 20, 2026	501-1,000	600 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 · Sep 20, 2026 · View company records in RevenueBase
22	Grayling	Exact match	London, United KingdomHQ recorded Sep 20, 2026	501-1,000	550 contacts →
	Exact match “We are Grayling, the world's local communications agency.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Mullenlowe Global	Exact match	London, United KingdomHQ recorded Sep 20, 2026	1,001-5,000	544 contacts →
	Exact match “Happy to see you came here to learn a little more about us!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Prosek Partners	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	201-500	543 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Everywhere Agency	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	n/a	527 contacts →
	Exact match “Everywhere Agency is now a part of MWWPR.” Recorded in the RevenueBase company graph · Sep 20, 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 “internal 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 26,030 internal communications agencies worldwide

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Internal communications agencies worldwide at a glance

As of Sep 20, 2026

23.4%Verified-email coverage

11.9Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

16,621

11-50

7,543

51-200

1,391

201-500

258

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 internal communications agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “internal 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 72,520 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 September 20, 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.

Internal communications agencies by location

116 lists · largest first

Every Internal 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 “internal communications agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internal communications agencies are there worldwide?

RevenueBase identified 26,030 company matches for internal communications agencies worldwide as of September 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?

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

Which country has the most internal communications agencies?

The United States leads with 2,570 companies, followed by Brazil (2,433) and France (2,057). Every internal communications agencies list by country and city is linked on this page.

Which city has the most internal communications agencies?

Sao Paulo leads with 707 company records, followed by London (605) and Paris (477).

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 72,520 professional contacts with verified work emails tracked across these 26,030 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 September 20, 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.