Company lists · Data refreshed September 2026

Top 25 Internal communications firms based in Belgium

Name: Internal communications firms based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 181 companies tracked

RevenueBase identified 181 internal communications firms headquartered in Belgium as of September 2026 and tracks 1,794 professional contacts across them, including 411 with verified work emails. Brussels is the largest hub.

This list covers internal communications firms headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

181Companies

1,794Contacts tracked

411Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest internal communications firms based in Belgium

Ranked by team size

Top 25 of 181 internal communications firms based in Belgium, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to internal communications firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ESN	Partial evidence	Brussels, BelgiumHQ checked Sep 20, 2026	51-200	226 contacts →
	Partial evidence “Established in 1986, European Service Network (ESN) is today one of the leading communications agencies and information service providers in Brussels serving private- and…” Source: RevenueBase Database · checked Sep 20, 2026
2	Akkanto	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	11-50	56 contacts →
	Indirect evidence “akkanto is an independent consultancy that aims to pro-actively manage organisations’ reputations and relations with all stakeholders through reputation management, employee…” Source: RevenueBase Database · checked Sep 20, 2026
3	Expansion Partners SA	Partial evidence	Wierde, BelgiumHQ checked Sep 20, 2026	11-50	53 contacts →
	Partial evidence “Expansion est une agence intégrée de marketing et communication.” Source: RevenueBase Database · checked Sep 20, 2026
4	Havas Belgium	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	51-200	48 contacts →
	Indirect evidence “Havas aims to be the world’s best company at creating meaningful connections between people and brands using creativity, media and innovation.” Source: RevenueBase Database · checked Sep 20, 2026
5	Whyte Corporate Affairs	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	11-50	47 contacts →
	Indirect evidence “Stakeholder oriented, objective driven.” Source: RevenueBase Database · checked Sep 20, 2026
6	Focus Advertising	Partial evidence	Kortrijk, BelgiumHQ checked Sep 20, 2026	11-50	37 contacts →
	Partial evidence “Focus Advertising is a communication agency based in Kortrijk (Belgium).” Source: RevenueBase Database · checked Sep 20, 2026
7	These Days	Partial evidence	Antwerp, BelgiumHQ checked Sep 20, 2026	51-200	32 contacts →
	Partial evidence “These Days - an integrated, multidisciplinary communication agency, digital at heart.” Source: RevenueBase Database · checked Sep 20, 2026
8	LOW	Partial evidence	Brussels, BelgiumHQ checked Sep 20, 2026	11-50	30 contacts →
	Partial evidence “LOW Associates is an independent, strategic communications and policy consultancy, based in Brussels and London.” Source: RevenueBase Database · checked Sep 20, 2026
9	Visible Creative Agency	Partial evidence	Herstal, BelgiumHQ checked Sep 20, 2026	11-50	22 contacts →
	Partial evidence “With Visible you will find true flexible solutions and the guarantee that your communication projects will reach maturity.” Source: RevenueBase Database · checked Sep 20, 2026
10	Bepublic Group	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Journalistic PR is in BePublic Group's DNA.” Source: RevenueBase Database · checked Sep 20, 2026
11	Propaganda Group	Partial evidence	Zaventem, BelgiumHQ checked Sep 20, 2026	51-200	16 contacts →
	Partial evidence “The Propaganda Group, founded in 2021, brings together a variety of agencies in the communications and marketing spectrum.” Source: RevenueBase Database · checked Sep 20, 2026
12	Ketchum Brussels	Partial evidence	Sint-jans-molenbeek, BelgiumHQ checked Sep 20, 2026	51-200	15 contacts →
	Partial evidence “Ketchum Brussels has evolved from its beginnings as a PR agency to an integrated communications consultancy.” Source: RevenueBase Database · checked Sep 20, 2026
13	TOP Secret Communication	Partial evidence	BelgiumHQ checked Sep 20, 2026	11-50	15 contacts →
	Partial evidence “Communication Consulting Agency in Brussels specialised in social media strategy, influencers, press, creative content (graphic design, community management, art direction)…” Source: RevenueBase Database · checked Sep 20, 2026
14	Thys Communicatie	Indirect evidence	Zolder, BelgiumHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Thys Communicatie ondersteunt bedrijven om uitzonderlijke resultaten te bereiken dankzij online marketing, strategisch advies, marketingmanagement, salesmanagement en recruitment.” Source: RevenueBase Database · checked Sep 20, 2026
15	DTS Connecting Worlds	Partial evidence	Nivelles, BelgiumHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “DTS helps communication teams handle unexpected situations and maintain their operational capacity.” Source: RevenueBase Database · checked Sep 20, 2026
16	Vonk Netwerk Voor Interne Communicatie	Partial evidence	Antwerpen, BelgiumHQ checked Sep 20, 2026	201-500	13 contacts →
	Partial evidence “vonk is er voor jou om- je kennis en competenties in interne communicatie te verbreden, te verdiepen en up to date te houden- je te laten ervaringen uitwisselen met collega's het…” Source: RevenueBase Database · checked Sep 20, 2026
17	cloth.kreativbureau	Partial evidence	Eupen, BelgiumHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “Since 2015, we consult start-ups, mid-sized and large companies in corporate communication and look for complete and efficient solutions.” Source: RevenueBase Database · checked Sep 20, 2026
18	Bullet Point	Indirect evidence	Lichtervelde, BelgiumHQ checked Sep 20, 2026	1-10	11 contacts →
	Indirect evidence “Als jouw strategische communicatiepartner zorgen wij voor samenhang over alle kanalen heen.” Source: RevenueBase Database · checked Sep 20, 2026
19	Xian Agency	Indirect evidence	Schilde, BelgiumHQ checked Sep 20, 2026	1-10	11 contacts →
	Indirect evidence “Xian agency, created by Joeri Bogaerts, located in the heart of Antwerp with one thought on its mind: your business and image.” Source: RevenueBase Database · checked Sep 20, 2026
20	Brum Smith	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “At Brum Smith, we believe that the most impactful stories often lie beneath the surface.” Source: RevenueBase Database · checked Sep 20, 2026
21	IKOON	Indirect evidence	Tielt, BelgiumHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “ikoon.biz inspireert met opwindende communicatie en stimuleert jouw groei, vandaag en morgen.” Source: RevenueBase Database · checked Sep 20, 2026
22	Morris & Chapman Belgium	Partial evidence	Brussels, BelgiumHQ checked Sep 20, 2026	11-50	10 contacts →
	Partial evidence “Morris & Chapman is a 360° online and offline agency with a focus on issue related and B2B communications.” Source: RevenueBase Database · checked Sep 20, 2026
23	Rothman & Roman Group	Partial evidence	Brussels, BelgiumHQ checked Sep 20, 2026	51-200	10 contacts →
	Partial evidence “Rothman & Roman Group Strategic communications and content development for your business How can we help you?” Source: RevenueBase Database · checked Sep 20, 2026
24	HANDS	Indirect evidence	Hasselt, BelgiumHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Hands is hét dynamisch communicatiebureau uit Hasselt.” Source: RevenueBase Database · checked Sep 20, 2026
25	DE Facto Image Building	Partial evidence	Sint-martens-latem, BelgiumHQ checked Sep 20, 2026	11-50	10 contacts →
	Partial evidence “Winner of the HR Excellence Award - Best Employer Branding & Communication Company.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: internal communications firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names internal communications firms.
Partial evidence: Its own public description names part of internal communications firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name internal communications firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 181 internal communications firms based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 411 reachable decision-makers.

Free signup · no credit card

View the full list →

Internal communications firms based in Belgium at a glance

As of Sep 20, 2026

22.9%Verified-email coverage

9.9Average contacts per company

1-10Median size (employees)

11.0%Largest-city concentration · Brussels

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

134

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 181 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among internal communications firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Belgium whose own description of what they do matches “internal communications firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names internal communications firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among internal communications firms, and records with no verified work email. Companies headquartered outside Belgium are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 411 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names internal communications firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many internal communications firms are there based in Belgium?

RevenueBase identified 181 internal communications firms headquartered in Belgium as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ESN, headquartered in Brussels, tops this list with the largest team on record.

Which city has the most internal communications firms?

Brussels leads with 20 headquartered companies, followed by Antwerpen (6) and Gent (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 411 verified decision-maker contacts tracked across these 181 companies.

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.

Ready to reach these companies? Verified emails and direct dials for all 181 internal communications firms based in Belgium. Start with a free account, no credit card.

Download this list →

Related lists

Internal communications firms by geography

Browse the directory

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 Smart Search, 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.