These Luxembourg consulting firms cover a range of specialized services, from large-scale IT and financial advisory to niche legal and IP management. The list includes major professional services networks and financial institutions, as well as specialized IT and legal consultancies. Firms like PwC Luxembourg and KPMG Luxembourg provide comprehensive audit, tax, and advisory services, while Majorel focuses on digitally-powered business services. Sword Group and Netcompany-Intrasoft specialize in IT services and digital transformation, and Arendt & Medernach offers legal and regulatory expertise.
A notable pattern among these companies is the strong presence of firms focused on financial services and IT consulting, reflecting Luxembourg's role as a financial hub and its growing digital economy. Many of these firms also have a significant international reach, serving clients globally from their Luxembourg headquarters.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Majorelfr.linkedin.com
Providing advanced, digitally-powered business services to help global brands streamline operations sustainably and deliver critical solutions worldwide. |
20,304 | |||
| 2 |
European Investment Bank (EIB)eib.org
Provide finance and expertise for sustainable projects supporting EU policies, focusing on Europe and implementing external development policies. |
5,011 | |||
| 3 |
PwC Luxembourgpwc.lu
Largest professional services firm providing audit, tax, and advisory services, including management consulting, to diverse local and multinational clients in Luxembourg. |
3,543 | |||
| 4 |
Sword Groupsword-group.com
Specialists in data insights, digital transformation, and technology services supporting complex IT and business projects across over 50 countries. |
2,170 | |||
| 5 |
KPMG Luxembourgkpmg.com
Independent firms providing audit, tax, and advisory services worldwide, operating under a global brand with distinct legal entities. |
1,863 | |||
| 6 |
Netcompany-Intrasoftnetcompany.com
A leading European IT Solutions and Services Group, offering innovative solutions to international and national public and private organizations worldwide |
1,687 | |||
| 7 |
Arendt & Medernacharendt.com
Leading independent law firm providing specialist legal, regulatory, taxation, and advisory services for international and domestic clients conducting business activities within Luxembourg. |
889 | |||
| 8 |
Dennemeyerdennemeyer.com
Provides comprehensive Intellectual Property protection, management, legal services, strategy consulting, software, maintenance, and patent analytics for diverse global clients. |
812 | |||
| 9 |
Zeentechzeentech.com.br
Specialists in engineering systems, simulations, testing, and high-tech solutions for automotive, railway, aerospace, and agricultural industries, providing innovative business solutions with certified quality management |
698 | |||
| 10 |
BDO Luxembourgbdo.lu
Provides audit, tax consultancy, accounting, payroll, financial engineering, investment fund services, advisory, human resources, and IT solutions to diverse business sectors. |
645 | |||
| 11 | 638 | ||||
| 12 |
SOA PEOPLEsoapeople.com
Specializes in SAP consulting and services, supporting business transformation with proven methodologies and strong partnerships across various industries. |
613 | |||
| 13 |
INTRASOFT Internationalnetcompany.com
Providing innovative IT solutions and services to public and private organizations across multiple countries with a diverse skilled workforce. |
547 | |||
| 14 |
ATOZ Tax Advisersatoz.lu
High-end advisory firm specializing in tax, corporate implementation, and finance solutions for international organizations, with a focus on optimizing investment value |
397 | |||
| 15 |
Forvis Mazars in Luxembourgforvismazars.com
International partnership providing audit, tax, advisory, accounting, and legal services with over 50,000 professionals supporting clients worldwide. |
367 | |||
| 16 |
AMPLEXOR Internationalacolad.com
Providing digital solutions for compliance, content management, consulting, and integration across multiple industries to improve efficiency and revenue. |
354 | |||
| 17 |
Schroeder & Associés S.A.schroeder.lu
With over 50 years of experience, our company provides construction engineering services, collaborating with architects and engineers to meet customers' needs efficiently |
343 | |||
| 18 |
Grant Thornton Luxembourggrantthornton.lu
Provider of Audit, Business Advisory, Tax, Financial Services, and Technology solutions in Luxembourg, serving various entities with global expertise and local market understanding |
334 | |||
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. | |||||
| 19 | 334 | ||||
| 20 |
Skeliaskelia.com
An international leader in building cross-border IT and engineering teams, offering services through a network of service centers in multiple countries |
299 | |||
| 21 | 215 | ||||
| 22 |
Luxcontrolluxcontrol.com
Luxcontrol offers safety, health, environmental, and product quality services to help clients comply with regulations They aim to build a safer world with a team of 250 experts |
210 | |||
| 23 |
Thales Cyber Solutions Luxembourgthalesgroup.com
Provides cybersecurity consulting, integrates solutions, and offers 24/7 detection and response services globally for various sectors, leveraging AI and post-quantum cryptography. |
183 | |||
| 24 |
HACA Partnershacapartners.lu
HACA Partners specializes in providing tailored governance models, internal and external audits, regulatory compliance, risk management, and consulting services for businesses |
130 | |||
| 25 |
SustainCERTsustain-cert.com
Provides independent validation and verification services for carbon markets and value chains, aligning with international sustainability frameworks. |
67 | |||
| 26 |
EBRC - European Business Reliance Centredeep.eu
A European Centre of Excellence offering end-to-end ICT Trusted Services with Data Centre, Cloud Computing, and Managed Services, promoting Business Resilience and Security |
61 | |||
| 27 |
Chemservice Groupchemservice-group.com
A global consultancy providing expert advice on national and international chemical regulations, offering scientific, technical, and strategic solutions for clients worldwide |
44 | |||
| 28 |
Fiduciaire Générale de Luxembourgfgl.lu
A respected player in auditing, taxation, and management consultancy services, with expertise spanning 60 years, serving local, cross-border, and international clients |
19 | |||
| 29 |
FRONT Consultingfront-consulting.com
Asset management consultants specializing in transformation projects, offering services from advisory to deployment in areas such as data management, reporting, compliance, and risk management |
18 | |||
| 30 |
sk consulting s.a. | Microsoft Partnerskc.lu
Luxembourg-based cloud solution provider offering modern and highly secure Microsoft 365, Dynamics 365 Business Central, and Azure subscription-based solutions |
14 | |||
| 31 |
Label R.label-r.com
Label R provides ESG and ethical certification, due diligence, and second party opinions for fund managers, private equity funds, and sustainable bonds |
11 | |||
| 32 |
TriFinance Luxembourgtrifinance.com
TriFinance is an international growth company offering finance and control services, focusing on hands-on advice, implementation support, and personalized career development |
10 | |||
| 33 |
OBIZCOobizco.com
A consulting firm based in Luxembourg specializing in aviation communication technologies, business strategy, and cost-benefit analysis for civil and military aviation industries |
8 | |||
| 34 |
Go4Valuesgo4values.lu
The company offers family office services, private equity consulting, and portfolio management expertise |
4 | |||
| 35 |
MasonBower Luxembourgmasonbower.lu
Consulting services focused on market understanding, data-driven research, and tailored strategic planning for business growth and communication. |
3 | |||
| 36 |
Ore & Coore-et-co.fr
Consulting and training firm supporting associations, small businesses, and independent workers in developing their skills through expert networks and tailored guidance |
2 | |||
| 37 |
Advanced Risk Management Solutions (ARMS) S.A.
A Luxembourg-based company specializing in quantitative risk management and mathematics, offering consulting and training services with a focus on innovation |
2 | |||
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How this list is built
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 12, 2026.
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