Company lists · Data verified August 2026

Top 25 Creative advertising agencies based in Belgium

Name: Creative advertising agencies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,761 companies tracked

There are 1,761 creative advertising agencies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 15,212 professional contacts across them, including 4,517 with verified work emails and 550 with mobile numbers. Brussels is the largest hub.

This list covers creative advertising agencies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,761Companies

15,212Contacts tracked

4,517Verified emails

550Mobile numbers

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The 25 largest creative advertising agencies based in Belgium

Ranked by team size

Top 25 of 1,761 creative advertising agencies based in Belgium, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	IO	Brussels	1,001-5,000	3,702	1,035
2	SPACE	Brussels	51-200	283	53
3	Springbok Agency	Anderlecht	201-500	255	166
4	Bbdo Belgium	n/a	51-200	252	57
5	VAR	Sint-Stevens-Woluwe	51-200	198	53
6	Publicis Groupe Belgium	n/a	201-500	190	124
7	Tbwa Belgium	n/a	51-200	171	65
8	87seconds	n/a	51-200	121	54
9	Rossel Advertising	Bruxelles	51-200	75	8
10	The Reference	Ghent	51-200	64	25
11	Omcollective	Sint-Niklaas	51-200	60	40
12	Addretail Certified B Corp	n/a	51-200	57	26
13	D'm&s	Bruges	51-200	48	39
14	Havas Belgium	Brussels	51-200	48	5
15	Boondoggle	Leuven	51-200	47	17
16	Strategie Agency	Hermee	51-200	40	16
17	These Days	Antwerp	51-200	32	3
18	Onlyhumans	n/a	51-200	31	19
19	Créaset I The ART Of Visibility	n/a	51-200	27	8
20	OMD Belgium And Luxembourg	St-Jans-Molenbeek Brussels	51-200	21	12
21	Accenture Song Belux	Leuven	51-200	19	9
22	RCA	n/a	51-200	18	16
23	Propaganda Group	Gent	51-200	16	10
24	Biggie Benelux	Woluwe-Saint-Pierre Brussels	51-200	9	6
25	Publicis Brussels	Brussels	51-200	9	2

Showing 25 of 1,761 creative advertising agencies based in Belgium

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Creative advertising agencies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 99 HQs

550Contacts with mobile numbers

13Emails re-verified in last 30 days

Companies by employee count

1-10

1,409

11-50

268

51-200

201-500

1,001-5,000

10001+

Creative advertising agencies by metro

Metro	Companies
Creative advertising agencies in Brussels	99
Creative advertising agencies in Antwerpen	90
Creative advertising agencies in Bruxelles	85
Creative advertising agencies in Gent	57
Creative advertising agencies in Antwerp	53
Creative advertising agencies in Liege	34
Creative advertising agencies in Kortrijk	27

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “creative advertising agencies”, with match quality audited by blind human judging, and headquartered in Belgium.
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: Contact records re-verify on a rolling cadence; 13 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many creative advertising agencies are there based in Belgium?

There are 1,761 creative advertising agencies headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most creative advertising agencies?

Brussels leads with 99 headquartered companies, followed by Antwerpen (90) and Bruxelles (85).

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 4,517 verified decision-maker contacts tracked across these 1,761 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.