Company lists · Data verified August 2026

Top 14 Advertising agencies based in Brussels, Belgium

Name: Advertising agencies based in Brussels, Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 29 companies tracked

There are 29 advertising agencies headquartered in Brussels, Belgium (RevenueBase, August 2026). RevenueBase tracks 449 professional contacts across them, including 79 with verified work emails and 14 with mobile numbers. Antwerpen is the largest hub.

This list covers advertising agencies headquartered in Brussels, 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.

29Companies

449Contacts tracked

79Verified emails

14Mobile numbers

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The 14 largest advertising agencies based in Brussels, Belgium

Ranked by team size

Top 14 of 29 advertising agencies based in Brussels, 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	SPACE	Brussels	51-200	283	53
2	Havas Belgium	Brussels	51-200	48	5
3	LEO Burnett Brussels	Brussels	11-50	10	2
4	Publicis Brussels	Brussels	51-200	9	2
5	Asteron	Brussels	11-50	8	1
6	Tramway21	Brussels	11-50	6	3
7	Boukan Studio	Brussels	1-10	5	2
8	Zt1 Projects	Brussels	1-10	4	2
9	The Oval Office	Brussels	51-200	4	1
10	intergalactic.world	Brussels	11-50	3	3
11	Macrocosm	Brussels	1-10	3	1
12	Nice Work Agency	Brussels	1-10	2	2
13	Sparroo Full Service Marketing Agency	Brussels	1-10	1	1
14	Streamline	Brussels	1-10	1	1

Showing 14 of 29 advertising agencies based in Brussels, Belgium

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Advertising agencies based in Brussels, Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

AntwerpenLargest hub · 33 HQs

14Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Advertising agencies by metro in Belgium

Metro	Companies
Advertising agencies in Antwerpen	33
Advertising agencies in Brussels	29
Advertising agencies in Bruxelles	28
Advertising agencies in Gent	20
Advertising agencies in Ixelles	11
Advertising agencies in Hasselt	11
Advertising agencies in Kortrijk	11

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 “advertising agencies”, with match quality audited by blind human judging, and headquartered in Brussels, 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; 0 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 advertising agencies are there based in Brussels, Belgium?

There are 29 advertising agencies headquartered in Brussels, Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most advertising agencies?

Antwerpen leads with 33 headquartered companies, followed by Brussels (29) and Bruxelles (28).

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 79 verified decision-maker contacts tracked across these 29 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.