Company lists · Data refreshed November 2026

Top 25 Internal communications consulting companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 30,808 companies tracked

RevenueBase identified 30,808 company matches for internal communications consulting companies worldwide as of November 2026 and tracks 217,133 professional contacts across them, including 50,427 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for internal communications consulting companies 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 internal communications consulting companies 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

30,808Companies

217,133Contacts tracked

50,427Verified emails

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The 25 largest internal communications consulting companies worldwide

Ranked by team size

Top 25 of 30,808 company matches for internal communications consulting companies 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	Idol Image Consulting	Exact match	Kula, HI, TürkiyeHQ recorded Nov 6, 2026	n/a	12,972 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 · Nov 6, 2026 · View company records in RevenueBase
2	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
3	Diversified	Exact match	Plano, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,744 contacts →
	Exact match “At Diversified, we leverage the best in technology and ongoing advisory services to transform businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	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
5	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
6	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	930 contacts →
	Exact match “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	MANTU	Exact match	Chêne-bourg, SwitzerlandHQ recorded Nov 6, 2026	10001+	905 contacts →
	Exact match “Mantu is an international consulting and technology company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Ketchum	Exact match	New York, United StatesHQ recorded Nov 6, 2026	1,001-5,000	794 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 · Nov 6, 2026 · View company records in RevenueBase
9	Porter Novelli	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	784 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 · Nov 6, 2026 · View company records in RevenueBase
10	ICR	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	201-500	773 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 · Nov 6, 2026 · View company records in RevenueBase
11	Prosek Partners	Exact match	New York, United StatesHQ recorded Nov 6, 2026	201-500	592 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Allison Worldwide	Exact match	San Francisco, United StatesHQ recorded Nov 6, 2026	501-1,000	587 contacts →
	Exact match “We’re a global integrated marketing and communications consultancy dedicated to driving growth, innovation and positive change for clients, colleagues and communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	FSB Holding	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	1,001-5,000	561 contacts →
	Exact match “Reputação é resultado.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	MSL India	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	501-1,000	528 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 · Nov 6, 2026 · View company records in RevenueBase
15	NAE	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	501-1,000	525 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 · Nov 6, 2026 · View company records in RevenueBase
16	JKL	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	51-200	508 contacts →
	Exact match “JKL is now Kekst CNC Stockholm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Demarco	Exact match	Belo Horizonte, BrazilHQ recorded Nov 6, 2026	201-500	490 contacts →
	Exact match “Since 2004, we have helped companies solve their challenges in People, Management, Security and Trade Union Relations, delivering world-class results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Sodali & CO	Exact match	New York, United StatesHQ recorded Nov 6, 2026	501-1,000	452 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 · Nov 6, 2026 · View company records in RevenueBase
19	Emperor	Exact match	Aldgate, United KingdomHQ recorded Nov 6, 2026	201-500	445 contacts →
	Exact match “Emperor is one of the UK's leading employee-owned creative communications agencies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	WMH Project	Exact match	Courbevoie, FranceHQ recorded Nov 6, 2026	201-500	350 contacts →
	Exact match “WMH Project est un des groupes de communication hors média leaders en France et en Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	PR Pundit Havas RED	Exact match	Gurgaon, IndiaHQ recorded Nov 6, 2026	51-200	337 contacts →
	Exact match “PR Pundit Havas Red, part of the Havas Group (one of the world’s largest advertising and communication networks), is an award-winning integrated communications consultancy with a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Jeffreygroup	Exact match	Miami, United StatesHQ recorded Nov 6, 2026	201-500	331 contacts →
	Exact match “Founded in 1993, JeffreyGroup is the leading marketing, corporate communications and public affairs consultancy focused exclusively on Latin America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Publicis Canada	Exact match	Montreal, ON, CanadaHQ recorded Nov 6, 2026	501-1,000	318 contacts →
	Exact match “At Publicis we believe that change is shaped by those who are brave enough.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Newlink	Exact match	Miami, FL, United StatesHQ recorded Nov 6, 2026	201-500	293 contacts →
	Exact match “Newlink is a global consulting firm founded in 1998 by Sergio Roitberg, headquartered in Miami with offices in Argentina, Mexico, Peru, Spain, and the Dominican Republic, and a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Simplicity Consulting	Exact match	Kirkland, WA, United StatesHQ recorded Nov 6, 2026	201-500	292 contacts →
	Exact match “Simplicity Consulting helps organizations redesign how work gets done in an AI-enabled future.” 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 “internal communications consulting companies”. 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 30,808 internal communications consulting companies worldwide

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Internal communications consulting companies worldwide at a glance

As of Nov 6, 2026

23.2%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

24,563

11-50

5,152

51-200

739

201-500

143

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 consulting companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “internal communications consulting companies” 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 50,427 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.

Internal communications consulting companies by location

164 lists · largest first

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

How many internal communications consulting companies are there worldwide?

RevenueBase identified 30,808 company matches for internal communications consulting companies 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?

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 internal communications consulting companies?

The United States leads with 5,437 companies, followed by France (2,072) and Brazil (1,817). Every internal communications consulting companies list by country and city is linked on this page.

Which city has the most internal communications consulting companies?

London leads with 749 company records, followed by Paris (613) and Sao Paulo (607).

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 50,427 professional contacts with verified work emails tracked across these 30,808 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.