Company lists · Data refreshed September 2026

Top 25 Communication consulting firms worldwide

Name: Communication consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 38,762 companies tracked

RevenueBase identified 38,762 company matches for communication consulting firms worldwide as of September 2026 and tracks 254,174 professional contacts across them, including 65,285 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for communication consulting firms 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 21, 2026. Country and city lists for communication consulting firms 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 21, 2026 How this list was built

38,762Companies

254,174Contacts tracked

65,285Verified emails

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The 25 largest communication consulting firms worldwide

Ranked by team size

Top 25 of 38,762 company matches for communication consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Idol Image Consulting	Exact match	Kula, HI, TürkiyeHQ recorded Sep 21, 2026	n/a	12,976 contacts →
	Exact match “IDOL Image Consulting has developed strategies to help individuals, groups or corporate organizations face today’s challenges and fierce competition.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Edelman	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	5,001-10,000	6,242 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 · Sep 21, 2026 · View company records in RevenueBase
3	TENEO	Exact match	New York City, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,930 contacts →
	Exact match “Teneo is the global CEO advisory firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Adfactors PR	Exact match	Mumbai, IndiaHQ recorded Sep 21, 2026	1,001-5,000	1,920 contacts →
	Exact match “Adfactors PR, founded in 1997, is India's largest Public Relations firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Hill & Knowlton	Exact match	NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,450 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 · Sep 21, 2026 · View company records in RevenueBase
6	FSB Comunicação	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
7	Ketchum	Exact match	New York City, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	963 contacts →
	Exact match “We are Ketchum, a global communications consultancy fueled by empathy and intelligence – progress at work for innovation, our employees and our clients since 1923.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Scholz & Friends	Exact match	Hamburg, GermanyHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
9	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
10	Accuracy	Exact match	Paris, SingaporeHQ recorded Sep 21, 2026	501-1,000	868 contacts →
	Exact match “Accuracy is a wholly independent international consulting firm providing advice to company management and shareholders for their strategic or critical decisions, notably in…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Porter Novelli	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	821 contacts →
	Exact match “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	ICR	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	693 contacts →
	Exact match “ICR is a strategic communications and advisory firm that helps management teams align how they communicate with how markets think.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Atrevia	Exact match	Madrid, SpainHQ recorded Sep 21, 2026	501-1,000	623 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Prosek Partners	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	543 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	NAE	Exact match	Barcelona, SpainHQ recorded Sep 21, 2026	501-1,000	503 contacts →
	Exact match “Nae is an international consulting firm specialized in the telecom sector, providing deal & strategy, business, and technology advisory services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	R&r Partners	Exact match	Las Vegas, NV, United StatesHQ recorded Sep 21, 2026	201-500	493 contacts →
	Exact match “R&R partners isn’t our name, it’s our promise.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	MSL India	Exact match	Mumbai, IndiaHQ recorded Sep 21, 2026	501-1,000	469 contacts →
	Exact match “MSL is Publicis Groupe’s public relations and integrated communications network, one of the world’s largest.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Inpress Porter Novelli	Exact match	Sao Paulo, BrazilHQ recorded Sep 21, 2026	201-500	441 contacts →
	Exact match “Agência de comunicação full service com mais de 150 clientes nos segmentos corporativo, consumo, mídia e entretenimento, saúde, tecnologia e telecomunicações, dentre outros.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Sodali & CO	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	431 contacts →
	Exact match “Sodali & Co advises corporate clients worldwide as they navigate the complex dynamic of shareholder and stakeholder interests.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Emperor	Exact match	Aldgate, United KingdomHQ recorded Sep 21, 2026	201-500	415 contacts →
	Exact match “Emperor is one of the UK's leading employee-owned creative communications agencies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	CFC BIG Ideas	Exact match	Kyiv, UkraineHQ recorded Sep 21, 2026	n/a	414 contacts →
	Exact match “СFC Big Ideas is a communications agency specializing in international projects, government relations & PR.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Mercury Public Affairs, LLC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	390 contacts →
	Exact match “Mercury is a national bipartisan government relations and strategic communications firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Sunshine Sachs Morgan & Lylis	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	364 contacts →
	Exact match “Sunshine Sachs Morgan & Lylis is an independent, full-service firm specializing in communications and narrative strategy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	CMM DE LA Calle, Madrazo, Mancera SC	Exact match	Miguel Hidalgo, MexicoHQ recorded Sep 21, 2026	n/a	362 contacts →
	Exact match “Somos una empresa consultora en asuntos públicos que conjunta sustancia con forma y traduce pensamiento al considerar gran diversidad de puntos de vista y panoramas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	DKC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	349 contacts →
	Exact match “DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…” Recorded in the RevenueBase company graph · Sep 21, 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 “communication consulting firms”. 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 38,762 communication consulting firms worldwide

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Communication consulting firms worldwide at a glance

As of Sep 21, 2026

25.7%Verified-email coverage

6.6Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

31,238

11-50

6,386

51-200

845

201-500

138

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 communication consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “communication consulting firms” 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 65,285 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 21, 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.

Communication consulting firms by location

154 lists · largest first

Every Communication consulting firms 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 “communication consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many communication consulting firms are there worldwide?

RevenueBase identified 38,762 company matches for communication consulting firms 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?

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

Which country has the most communication consulting firms?

The United States leads with 7,555 companies, followed by France (2,587) and Brazil (2,278). Every communication consulting firms list by country and city is linked on this page.

Which city has the most communication consulting firms?

London leads with 965 company records, followed by Paris (838) and Sao Paulo (739).

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 65,285 professional contacts with verified work emails tracked across these 38,762 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 21, 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.