Company lists · Data refreshed September 2026
Top 25 Lead generation agencies based in Belgium
RevenueBase identified 98 lead generation agencies headquartered in Belgium as of September 2026 and tracks 369 professional contacts across them, including 87 with verified work emails and 22 with mobile numbers. Bruxelles is the largest hub.
This list covers lead generation agencies 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.
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.
The 25 largest lead generation agencies based in Belgium
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 69 | ||||
“Bereik commerciële groei in drie eenvoudige stappen: meer leads, betere verkoopresultaten en langdurige klantrelaties.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 17 | ||||
“Wij gaan verder dan het genereren van contacten.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 17 | ||||
“In veel bedrijven is marketing een bron van frustratie, omdat ze er niet in slagen aan te tonen hoeveel extra business ze genereren.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 12 | ||||
“Captar bv is sterk in sales-ready marketing.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 11 | ||||
“Online marketing is niet meer weg te denken uit de huidige marketingmix van KMO's.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 9 | ||||
“What would your marketing budget look like if you knew every € invested would make you in return?” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8 | ||||
“Clef2web sprl, créée en 2005, est une agence web spécialisée dans la génération de leads et le lead nurturing.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 8 | ||||
“Sellent helps B2B companies structure their sales process to win new customers, through targeted lead generation, consistent follow-up, and smart use of data and tools.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 | ||||
“0474 806 236 info@cbridge.be” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 | ||||
“Veel bedrijven willen groeien, maar hebben niet genoeg tijd voor actieve prospectie.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 6 | ||||
“Your strategic partner in growth.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 | ||||
“Met In The Lead helpen we vooral B2B-bedrijven in het genereren van kwalitatieve leads én zorgen we voor ondersteuning van de sales bij het verwerken ervan.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 | ||||
“Agence de growth marketing spécialisée en outbound B2B.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 | ||||
“Younyk is a digital marketing agency for B2B companies, located in Enghien, in the province of Hainaut in Belgium.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 | ||||
“De Commerce is een sales en marketing bureau.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 | ||||
“Voicemails, uninformed answers, fake phone numbers, competing for the same leads as your competitors and increasing prices for the same results.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 | ||||
“Piximo est une agence spécialisée en inbound marketing, nous permettons à nos clients de générer des nouveaux clients en utilisant principalement internet, soit en les formant…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 | ||||
“Toolbox reikt je de strategie, ideeën, inhoud en tools aan om je doelpubliek te bereiken en meer leads te creëren.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 | ||||
“We are a data driven growth marketing agency with a profound expertise in lead generation, SEO, digital strategy and conversion rate optimization.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 | ||||
“Met Sjuste genereren wij enkel kwalitatieve leads die exclusief voor jouw bedrijf zijn.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 | ||||
“Peak-Automations helpt bedrijven groeien met slimme AI-oplossingen voor leadgeneratie en cold outreach.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | Perez Content HUBIndirect evidence | 2 | |||
“Perez Content Hub helpt interieur- en woonbedrijven in Vlaanderen aan voorspelbare afspraken via Meta Ads.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | ExplordStrong evidence | 2 | |||
“Agence de Lead Generation” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 | ||||
“We help service businesses attract more clients on a pay per lead basis.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 | ||||
“Finger offers management consultancy in the fields of strategic marketing, lead generation & business development.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 98 lead generation agencies based in Belgium
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Lead generation agencies based in Belgium at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
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 lead generation agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Belgium whose own description of what they do matches “lead generation agencies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among lead generation agencies, 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 an evidence 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, 87 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 4, 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
How many lead generation agencies are there based in Belgium?
RevenueBase identified 98 lead generation agencies 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?
Salesup, headquartered in Erpe-Mere, tops this list with the largest team on record.
Which city has the most lead generation agencies?
Bruxelles leads with 7 headquartered companies, followed by Antwerpen (5) and Brussels (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 87 verified decision-maker contacts tracked across these 98 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 4, 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.
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