Company lists · Data refreshed November 2026

Top 25 Assertiveness training services worldwide

RevenueBase identified 763 company matches for assertiveness training services worldwide as of November 2026 and tracks 7,570 professional contacts across them, including 376 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for assertiveness training services 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 assertiveness training services 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
763Companies
7,570Contacts tracked
376Verified emails
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The 25 largest assertiveness training services worldwide

Ranked by team size
Top 25 of 763 company matches for assertiveness training services 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWest Hartford, NY, United StatesHQ recorded Nov 6, 2026n/a131 contacts →

Exact match

“Sandler | TEM Associates provides services designed to increase ability, confidence and effectiveness in dealing and communicating with other people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBoulogne Billancourt, FranceHQ recorded Nov 6, 2026n/a63 contacts →

Exact match

“Leader français* de l'accompagnement et du perfectionnement en communication pour les dirigeants, cadres et managers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchFort Lauderdale, NY, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“Since 1969, Communispond has helped over client associates – including CEOs, board chairs, sales leaders, and a wide range of business executives – achieve business goals by…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“Working Voices is a niche consultancy teaching Interpersonal Communication Skills to Big Business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBangalore, IndiaHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Organizations invest heavily in learning, leadership development, and capability building, yet most struggle to answer: Has performance improved?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-1027 contacts →

Exact match

“Challenging, memorable and effective - our training uses a combination of demonstration, practical exercises and individual feedback.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Wavelength provides effective communication skills training to individuals and organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Quantum Connections helps individuals and organizations build stronger relationships, improve communication, and create workplaces where people feel seen, heard, and able to do…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchJohannesburg, South AfricaHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Develop personal impact power and communication skills of clients to be brand ambassadors, achieve their own and their organisations goals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWarsaw, PolandHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“Intra Szkolenia i Rozwój to projekt, który realizujemy w ramach Ośrodka Pomocy i Edukacji Psychologicznej Intra.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchTallinn, EstoniaHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“SpeakSmart is Estonia’s leading training and consultancy firm specializing in reasoned communication skills.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLisbon, PortugalHQ recorded Nov 6, 20261-1014 contacts →

Exact match

“O nosso propósito é ajudá-lo a tornar-se um grande comunicador, capaz de criar ligações fortes e de influenciar positivamente a sua equipa, parceiros e clientes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchJakarta, IndonesiaHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“At CommunicatingWorld, we specialize in delivering high-impact training workshops and executive coaching programs that elevate communication effectiveness across all levels of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchUnited StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“WHO WE ARE: Welcome to Innovative Formula.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“SpeechSkills is a California-based communication training company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMelle, GermanyHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Imboorling laat jou en je team groeien door beter te communiceren.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAh, NetherlandsHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Mansal werkt voor iedereen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSingaporeHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Stop doubting yourself when writing an email or speaking in public.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLeiden, NetherlandsHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Hoi!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-109 contacts →

Exact match

“We help leaders and teams master crucial conversation skills, strengthening relationships, maximising outcomes and ultimately, driving growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNew York, FL, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“The Graceworks team travels around the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchKönigstein/taunus, GermanyHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Seit über 40 Jahren unterstützt das Königsteiner Dialog-Training® als einzigartiges Weiterbildungs- und Seminarkonzept Mitarbeitende, Auszubildende und Führungskräfte dabei, eine…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBoston, MA, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Our goal is to make it easy for you & your organization to thrive in the work you do by helping you understand & execute strong interpersonal communication practices.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Turpin Communication is a training provider with more than 30 years of experience helping presenters, meeting facilitators, and corporate trainers take control of their…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchVancouver, BC, CanadaHQ recorded Nov 6, 20261-107 contacts →

Exact match

“We are Metonomy!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 763 assertiveness training services worldwide

See the full list, filter by size, metro and specialty, and access 376 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Assertiveness training services worldwide at a glance

As of Nov 6, 2026
5.0%Verified-email coverage
9.9Average contacts per company
1-10Median size (employees)
3.9%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
708
11-50
51
51-200
2

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 assertiveness training services are linked below.
What qualifies
Company records worldwide whose business descriptions match “assertiveness training services” 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 376 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.

Assertiveness training services by location

6 lists · largest first

Every Assertiveness training services 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 “assertiveness training services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many assertiveness training services are there worldwide?

RevenueBase identified 763 company matches for assertiveness training services 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?

Sandler TEM Associates, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most assertiveness training services?

The United States leads with 105 companies, followed by the Netherlands (77) and France (71). Every assertiveness training services list by country and city is linked on this page.

Which city has the most assertiveness training services?

London leads with 30 company records, followed by Paris (17) and New York (13).

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 376 professional contacts with verified work emails tracked across these 763 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.