Company lists · Data refreshed September 2026
Top 22 International law firms based in Belgium
RevenueBase identified 533 international law firms headquartered in Belgium as of September 2026 and tracks 9,733 professional contacts across them, including 4,541 with verified work emails and 996 with mobile numbers. Brussels is the largest hub.
This list covers international law 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 4, 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.
The 22 largest international law firms based in Belgium
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 223 contacts → | ||||
Partial evidence “Eubelius is Belgium's largest independent law firm.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 153 contacts → | ||||
Partial evidence “Monard Law, an independent business law firm in Belgium with 25+ years of experience.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 145 contacts → | ||||
Indirect evidence “At Claeys & Engels, we offer a full range of legal services in all areas concerning human resources.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 144 contacts → | ||||
Partial evidence “Lydian is a full-service, independent Belgian law firm that was founded in 2001, and has grown in just a few years to a stand-alone business law firm.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 125 contacts → | ||||
Strong evidence “Van Bael & Bellis is a leading independent international law firm headquartered in Brussels and with offices in London and Geneva.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 125 contacts → | ||||
Indirect evidence “Behind every case pleaded by GSJ lawyers there is a team of more than 80 specialised lawyers.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 123 contacts → | ||||
Partial evidence “KPMG Law is a Belgian law firm operating mainly in the fields of corporate and business law, real estate law, employment law, banking & finance, tax law and public law.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 118 contacts → | ||||
Partial evidence “Founded in 1950, Janson is a multidisciplinary and multilingual business law firm, with currently 33 partners and more than 60 associates.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 110 contacts → | ||||
Indirect evidence “Schoups offers customised legal services to clients in the business world.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 80 contacts → | ||||
Partial evidence “Welcome to the profile of elegis, a leading independent law firm in Belgium.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 76 contacts → | ||||
Indirect evidence “Our goal is to bring an excelling service at a reasonable price.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 73 contacts → | ||||
Partial evidence “Fieldfisher Belgium is a leading firm, providing a full range of legal services and alternative solutions to our local and international clients on European, international and…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 62 contacts → | ||||
Partial evidence “Astrea is a Belgian independent law firm with more than 50 dynamic and experienced lawyers, spread between offices in Antwerp and Brussels.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 57 contacts → | ||||
Strong evidence “Quinz brings together highly capable lawyers, most of which have worked with top international law firms.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 57 contacts → | ||||
Indirect evidence “GD & A Advocaten is een jong en dynamisch advocatenkantoor die als gespecialiseerde kennisonderneming met een reële meerwaardecreatie de preferentiële juridische dienstverlener…” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Indirect evidence “Since 2001 Caluwaerts Uytterhoeven is legal partner of (inter)national companies, entrepreneurs and government authorities.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 55 contacts → | ||||
Partial evidence “Everest is home to a team of highly specialised lawyers in a variety of different fields of law which you find yourself faced with on a day-to-day basis as a company.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 49 contacts → | ||||
Indirect evidence “We are Four & Five, legal experts with a business mindset.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 47 contacts → | ||||
Indirect evidence “Desdalex Advocaten is een advocatenkantoor verankerd in Antwerpen, gespecialiseerd in verscheidene rechtstakken.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 47 contacts → | ||||
Partial evidence “assists its clients with independent and specialized advice in its practice areas: competition law | corporate law | commercial law | dispute resolution.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 47 contacts → | ||||
Indirect evidence “Wij zien het recht als een opportuniteit om u en uw bedrijf te helpen groeien.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 46 contacts → | ||||
Indirect evidence “Since De Clercq & Partners has been dedicated to helping businesses protect their innovations and creativity.” Source: RevenueBase Database · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
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: international law 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 international law firms.
- Partial evidence
- Its own public description names part of international law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name international law 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 22 of 533 international law firms based in Belgium
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International law firms based in Belgium at a glance
As of Sep 4, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 international law 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 “international law 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 international law 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 international law 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, 4,541 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.
International law firms by metro
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 international law 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 international law firms are there based in Belgium?
RevenueBase identified 533 international law 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?
Eubelius, headquartered in Kortrijk, tops this list with the largest team on record.
Which city has the most international law firms?
Brussels leads with 55 headquartered companies, followed by Antwerpen (37) and Bruxelles (34).
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 4,541 verified decision-maker contacts tracked across these 533 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 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.
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