Company lists · Data verified August 2026

Top 24 B2B SEO agencies based in Belgium

Name: B2B SEO agencies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 91 companies tracked

There are 91 B2B SEO agencies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 333 professional contacts across them, including 116 with verified work emails and 16 with mobile numbers. Antwerpen is the largest hub.

This list covers B2B SEO 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.

91Companies

333Contacts tracked

116Verified emails

16Mobile numbers

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The 24 largest B2B SEO agencies based in Belgium

Ranked by team size

Top 24 of 91 B2B SEO 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	Bluetime SA	Auderghem	11-50	39	27
2	Eteamsys	Liege	11-50	30	5
3	TOP On WEB	Nivelles	11-50	19	11
4	Kingsberry	Zandhoven	1-10	16	9
5	Référenceur	Sart-Lez-Spa	11-50	14	4
6	Inbound	Edegem	1-10	14	3
7	Fresh Blend	Schilde	1-10	7	6
8	Online Marketing Monkey	n/a	1-10	6	2
9	WEB Solution WAY	Vinalmont	1-10	5	1
10	Younyk	Enghien	1-10	4	3
11	Sherlock SEO Agency	Leuven	1-10	4	1
12	Adspecialist	Mechelen	1-10	3	2
13	Customer Impact	Antwerpen	1-10	3	2
14	IMZA	Diest	11-50	3	1
15	Dunesearch	Tienen	1-10	2	2
16	Media A	Bruxelles Brussels	11-50	2	1
17	Onlion	Torhout	1-10	2	1
18	That's WHY	Wevelgem	1-10	2	1
19	Gromark	Antwerpen	1-10	2	1
20	Upshift	Antwerpen	1-10	1	1
21	Webwolven	Diksmuide	1-10	1	1
22	Highup Makes The Difference	Brussels	1-10	1	1
23	Weblion	Wachtebeke Wachtebeke	1-10	1	1
24	Fameus	n/a	1-10	1	1

Showing 24 of 91 B2B SEO agencies based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 116 reachable decision-makers.

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B2B SEO agencies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

AntwerpenLargest hub · 6 HQs

16Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

B2B SEO agencies by metro

Metro	Companies
B2B SEO agencies in Antwerpen	6
B2B SEO agencies in Antwerp	4
B2B SEO agencies in Mont-Saint-Guibert	3
B2B SEO agencies in Ghent	3
B2B SEO agencies in Liege	3
B2B SEO agencies in Bruxelles Brussels	2
B2B SEO agencies in Bruxelles	2

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 “B2B SEO 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; 2 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 B2B SEO agencies are there based in Belgium?

There are 91 B2B SEO agencies headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Bluetime SA, headquartered in Auderghem, tops this list with the largest team on record.

Which city has the most B2B SEO agencies?

Antwerpen leads with 6 headquartered companies, followed by Antwerp (4) and Mont-Saint-Guibert (3).

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 116 verified decision-maker contacts tracked across these 91 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.