Company lists · Data refreshed November 2026

Top 25 Change management communication companies worldwide

Name: Change management communication companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 16,163 companies tracked

RevenueBase identified 16,163 company matches for change management communication companies worldwide as of November 2026 and tracks 117,578 professional contacts across them, including 26,750 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for change management communication 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 change management communication 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

16,163Companies

117,578Contacts tracked

26,750Verified emails

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The 25 largest change management communication companies worldwide

Ranked by team size

Top 25 of 16,163 company matches for change management communication 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	Publicis Groupe	Exact match	Paris, FranceHQ recorded Nov 6, 2026	10001+	20,192 contacts →
	Exact match “Founded in 1926 by Marcel Bleustein-Blanchet, today Publicis Groupe is one of the largest communications groups in the world and a leader in marketing, communication, and digital…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	Integration Consulting	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	201-500	295 contacts →
	Exact match “Integration is a strategy & management consultancy committed to realizing the change that our clients need.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Miltton	Exact match	Helsinki, FinlandHQ recorded Nov 6, 2026	201-500	286 contacts →
	Exact match “We are an explorative, dynamic and constantly curious consulting group, equipped to offer insight and inspiration to our clients in a changing world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	National Public Relations	Exact match	Montreal, BC, CanadaHQ recorded Nov 6, 2026	201-500	257 contacts →
	Exact match “NATIONAL Public Relations provides creative communications solutions that move people in thought and actions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Kreab Worldwide	Exact match	Norrmalm, SwedenHQ recorded Nov 6, 2026	501-1,000	247 contacts →
	Exact match “With 50 years of experience in strategic communications, we are proud to say that we have played an integral part in shaping the business landscape as we know it today.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Moshi Moshi	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	51-200	239 contacts →
	Exact match “We are not just an ad agency or a creative agency, we are a Communication Company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Centigo	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	201-500	224 contacts →
	Exact match “Vi vitaliserar företag genom förändring.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Grupo Gpac Comunicação Integrada	Exact match	Curitiba, BrazilHQ recorded Nov 6, 2026	201-500	223 contacts →
	Exact match “Somos a primeira agência de Comunicação Integrada do estado.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Radley Yeldar	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	218 contacts →
	Exact match “Radley Yeldar is an award-winning, independent London and Birmingham-based creative consultancy with more than 200 communications specialists.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Norlop VML	Exact match	Guayaquil, EcuadorHQ recorded Nov 6, 2026	51-200	213 contacts →
	Exact match “60 años desarrollando Ideas con las cuales la gente quiera pasar más tiempo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	JA Consulting LTD	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	188 contacts →
	Exact match “JA Consulting Limited is a passionate change consultancy focussing on sales and business transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	TACT	Exact match	Québec, QC, CanadaHQ recorded Nov 6, 2026	51-200	185 contacts →
	Exact match “Founded in September 2011, TACT Intelligence-conseil is composed of a group of experienced, professional communicators seeking to create a Québec-owned consulting agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Wellcom	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	179 contacts →
	Exact match “How can you build and protect your Image without taking Opinions into account?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Oxygen	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	176 contacts →
	Exact match “Since our mission has been to support companies and organizations in building powerful and authentic communication strategies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Ostertag Detewe	Exact match	Düsseldorf, GermanyHQ recorded Nov 6, 2026	201-500	171 contacts →
	Exact match “Transform your business DeTeWe Communications have many years of experience in delivering tailored, integrated solutions for their clients internationally 365 days a year, 24…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Hanover Communications	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	169 contacts →
	Exact match “Hanover is an award-winning communications consultancy that advises enterprises, institutions, and individuals on rewiring their strategies for long-term success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	SIA Addison	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	166 contacts →
	Exact match “Sia/Addison creates strategy, design and communications for the world’s most respected corporate and B2B organizations, following our distinctive strategy made visible(TM)…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	H&h Agency	Exact match	Hessle, United KingdomHQ recorded Nov 6, 2026	n/a	163 contacts →
	Exact match “H&H - The UK’s leading Internal Communications and Employee Engagement agency Every day we throw our collective energy, knowledge and creativity into improving the way people…” 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 “change management communication 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 16,163 change management communication companies worldwide

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Change management communication companies worldwide at a glance

As of Nov 6, 2026

22.8%Verified-email coverage

7.3Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

13,129

11-50

2,513

51-200

358

201-500

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 change management communication companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “change management communication 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 26,750 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.

Change management communication companies by location

106 lists · largest first

Every Change management communication 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 “change management communication companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many change management communication companies are there worldwide?

RevenueBase identified 16,163 company matches for change management communication 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?

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

Which country has the most change management communication companies?

The United States leads with 2,645 companies, followed by France (1,289) and Germany (922). Every change management communication companies list by country and city is linked on this page.

Which city has the most change management communication companies?

London leads with 359 company records, followed by Paris (345) and Sao Paulo (290).

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 26,750 professional contacts with verified work emails tracked across these 16,163 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.