The Belgian firms listed here are primarily large business consulting and services companies, alongside significant legal practices. Companies like Deloitte Belgium and BDO Belgium offer a broad spectrum of audit, tax, and advisory services. Stibbe is an international law firm, while Gevers specializes in intellectual property services.
Most of these firms, such as Vandelanotte, founded in 1948, and Moore Belgium, are well-established, mid-sized to large organizations. There is a strong concentration of headquarters in Brussels and Zaventem, indicating these areas are key hubs for professional services in Belgium.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Deloitte Belgiumdeloitte.com
A leading audit and consulting practice in Belgium offering services in audit, accounting, tax, consulting, and financial advisory to national and international clients |
2,840 | |||
| 2 |
Moore Belgiummoore.be
Leading independent accounting and consulting firm in Belgium helping entrepreneurs achieve their goals through a wide range of services including tax, audit, finance, and business consulting |
1,350 | |||
| 3 |
BDO Belgiumbdo.be
Providing audit, tax, legal, accounting, and advisory services with a personal approach, local presence, and global expertise for sustainable growth. |
987 | |||
| 4 |
Stibbestibbe.com
A leading independent international law firm providing high-quality legal advice, transactions, and litigation services to a diverse range of clients globally |
840 | |||
| 5 |
Vandelanottevandelanotte.be
A multidisciplinary team offering accountancy, audit, tax, legal, corporate finance, HR solutions, estate planning, cyber security, subsidy advice, and risk management services |
587 | |||
| 6 | 384 | ||||
| 7 |
PKF BOFIDIpkfbofidi.com
Professional network offering accounting, tax, and services in Brussels, Antwerp, and Ghent Customer-oriented for SMEs, professionals, and international companies with proactive expertise |
359 | |||
| 8 |
Van Havermaetvanhavermaet.be
Providing specialized financial, legal, tax, and HR advice nationally and internationally with a personal approach, over 54 years of experience, and a team of 170 experts |
286 | |||
| 9 |
Larcier-Intersentialarcier-intersentia.com
Publishing, training, and digital tools for legal and tax professionals, supporting regulated professions with innovative, precise, and proactive solutions. |
282 | |||
| 10 | 270 | ||||
| 11 | 268 | ||||
| 12 |
Forvis Mazars in Belgiumforvismazars.com
Innovative, multi-disciplinary firm offering audit, accounting, tax, and advisory services with personalized solutions and a focus on client needs |
253 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 13 |
Baker Tilly Belgiumbakertilly.be
Specializing in a wide range of financial and advisory services for businesses, offering personalized solutions with international reach and local expertise |
218 | |||
| 14 |
De Clercq & Partnersdcp-ip.com
Full-service intellectual property firm providing legal expertise in patents, trademarks, designs, and licensing for life sciences, chemistry, engineering, software, and brand-driven industries. |
55 | |||
| 15 |
Deminordeminor.com
International litigation funder supporting recovery cases and group actions through legal expertise in arbitration, enforcement, and securities settlements for global institutional investors. |
49 | |||
| 16 | 48 | ||||
| 17 |
Klea, a Quantios solutionklealegal.com
AI-powered global legal entity management solution with dashboards and workflows, offering outsourcing options for legal operational work with a network of specialists worldwide |
38 | |||
| 18 |
brantsandpatentsbrantsandpatents.com
Dynamic consultancy firm in Ghent and Brussels providing patent, trademark, and design protection services alongside tax advice for research institutes and SMEs. |
29 | |||
| 19 | 17 | ||||
| 20 |
Alterius - Recouvrement de cr茅ancesalterius.be
Specialized association of Judicial Officers focusing on amicable and judicial debt collection, offering efficient services through continuous missions from amicable to judicial phases |
15 | |||
| 21 |
Sirius Legal Business Law Firmsiriuslegaladvocaten.be
Sirius Legal provides proactive legal services with a focus on staying ahead of evolving laws and technology to guide businesses towards informed decisions |
8 | |||
| 22 | 6 | ||||
| 23 |
ICOSA EUROPEicosa-europe.com
An IP law firm specializing in Life Sciences, Chemistry, and Medical Devices, providing high value-added services through expert teams in science and intellectual property |
6 | |||
| 24 |
Jazz.legaljazz.legal
Provides specialized legal support for creative and innovative companies focusing on trademarks, designs, patents, copyright, contract drafting, and information technology law. |
3 | |||
| 25 |
Finnian & Columbafinniancolumba.be
Specializing in Intellectual Property and Media Law, this Belgian firm provides legal assistance on copyright, trademarks, media law, privacy, and more Focused on sectors like Media, IT, E-Commerce, and Innovation |
1 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.
More company lists in Belgium
- The largest companies in Belgium 6,986
- Multinational companies in Belgium 1,744
- Manufacturers in Belgium 630
- Retail chains in Belgium 622
- Companies with in-house R&D in Belgium 604
- IT services companies in Belgium 551
- IT Services and IT Consulting companies in Belgium 542
- Family-owned companies in Belgium 435
- Software Development companies in Belgium 430
- Transportation, Logistics, Supply Chain and Storage companies in Belgium 409
- SaaS companies in Belgium 407
- Professional services firms in Belgium 396
- Critical infrastructure operators in Belgium 354
- Hardware manufacturers in Belgium 320
- Financial services firms in Belgium 314
- Distributors and wholesalers in Belgium 314
- Consulting firms in Belgium 285
- Retail companies in Belgium 285
- Food and Beverage Manufacturing companies in Belgium 282
- Truck Transportation companies in Belgium 259
- Logistics companies in Belgium 258
- Advertising Services companies in Belgium 222
- Education providers in Belgium 209
- Consumer goods companies in Belgium 205
The same list elsewhere
- Law firms in the world 3,223
- Law firms in Europe 1,618