# Consulting firms headquartered in Luxembourg
Tamtam tracks 37 consulting firms headquartered in Luxembourg. This list ranks all of them by number of employees on LinkedIn, led by Majorel, European Investment Bank (EIB) and PwC Luxembourg. Their median headcount is 334. Half of them were founded in 2000 or later.
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.
π±πΊ Luxembourg Β· 37 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Majorel](https://www.tamtam.ai/c/majorel) (fr.linkedin.com)
Providing advanced, digitally-powered business services to help global brands streamline operations sustainably and deliver critical solutions worldwide. | Outsourcing and Offshoring Consulting | π±πΊ Luxembourg | 20,304 | 1978 |
| 2 | [European Investment Bank (EIB)](https://www.tamtam.ai/c/european-investment-bank-eib) (eib.org)
Provide finance and expertise for sustainable projects supporting EU policies, focusing on Europe and implementing external development policies. | Banking | π±πΊ Luxembourg | 5,011 | 1958 |
| 3 | [PwC Luxembourg](https://www.tamtam.ai/c/pwc-luxembourg) (pwc.lu)
Largest professional services firm providing audit, tax, and advisory services, including management consulting, to diverse local and multinational clients in Luxembourg. | Financial Services | π±πΊ Luxembourg | 3,543 | |
| 4 | [Sword Group](https://www.tamtam.ai/c/sword-group) (sword-group.com)
Specialists in data insights, digital transformation, and technology services supporting complex IT and business projects across over 50 countries. | IT Services and IT Consulting | π±πΊ Windhof | 2,170 | 2000 |
| 5 | [KPMG Luxembourg](https://www.tamtam.ai/c/kpmg-luxembourg) (kpmg.com)
Independent firms providing audit, tax, and advisory services worldwide, operating under a global brand with distinct legal entities. | Financial Services | π±πΊ Luxembourg | 1,863 | |
| 6 | [Netcompany-Intrasoft](https://www.tamtam.ai/c/netcompany-intrasoft) (netcompany.com)
A leading European IT Solutions and Services Group, offering innovative solutions to international and national public and private organizations worldwide | IT Services and IT Consulting | π±πΊ Luxembourg | 1,687 | 1996 |
| 7 | [Arendt & Medernach](https://www.tamtam.ai/c/arendt-and-medernach) (arendt.com)
Leading independent law firm providing specialist legal, regulatory, taxation, and advisory services for international and domestic clients conducting business activities within Luxembourg. | Law Practice | π±πΊ Luxembourg | 889 | 1988 |
| 8 | [Dennemeyer](https://www.tamtam.ai/c/dennemeyer) (dennemeyer.com)
Provides comprehensive Intellectual Property protection, management, legal services, strategy consulting, software, maintenance, and patent analytics for diverse global clients. | Law Practice | π±πΊ Howald | 812 | 1962 |
| 9 | [Zeentech](https://www.tamtam.ai/c/zeentech) (zeentech.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 | Business Consulting and Services | π±πΊ Luxemburgo - LU | 698 | |
| 10 | [BDO Luxembourg](https://www.tamtam.ai/c/bdo-luxembourg) (bdo.lu)
Provides audit, tax consultancy, accounting, payroll, financial engineering, investment fund services, advisory, human resources, and IT solutions to diverse business sectors. | Accounting | π±πΊ Luxembourg | 645 | 1977 |
| 11 | [DEEP](https://www.tamtam.ai/c/deep) (deep.eu)
Support companies and institutions in managing IT resources and digital transformation through cloud, cybersecurity, and data services with expert consultancy. | Technology, Information and Media | π±πΊ Luxembourg | 638 | 2024 |
| 12 | [SOA PEOPLE](https://www.tamtam.ai/c/soa-people) (soapeople.com)
Specializes in SAP consulting and services, supporting business transformation with proven methodologies and strong partnerships across various industries. | IT Services and IT Consulting | π±πΊ Bertrange | 613 | 2007 |
| 13 | [INTRASOFT International](https://www.tamtam.ai/c/intrasoft-international) (netcompany.com)
Providing innovative IT solutions and services to public and private organizations across multiple countries with a diverse skilled workforce. | IT Services and IT Consulting | π±πΊ Luxembourg | 547 | 1996 |
| 14 | [ATOZ Tax Advisers](https://www.tamtam.ai/c/atoz-tax-advisers) (atoz.lu)
High-end advisory firm specializing in tax, corporate implementation, and finance solutions for international organizations, with a focus on optimizing investment value | Financial Services | π±πΊ Senningerberg | 397 | 2004 |
| 15 | [Forvis Mazars in Luxembourg](https://www.tamtam.ai/c/forvis-mazars-in-luxembourg) (forvismazars.com)
International partnership providing audit, tax, advisory, accounting, and legal services with over 50,000 professionals supporting clients worldwide. | Financial Services | π±πΊ Luxembourg | 367 | |
| 16 | [AMPLEXOR International](https://www.tamtam.ai/c/amplexor-international) (acolad.com)
Providing digital solutions for compliance, content management, consulting, and integration across multiple industries to improve efficiency and revenue. | IT Services and IT Consulting | π±πΊ Bertrange | 354 | |
| 17 | [Schroeder & AssociΓ©s S.A.](https://www.tamtam.ai/c/schroeder-and-associes-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 | Civil Engineering | π±πΊ Kockelscheuer | 343 | 1961 |
| 18 | [Grant Thornton Luxembourg](https://www.tamtam.ai/c/grant-thornton-luxembourg) (grantthornton.lu)
Provider of Audit, Business Advisory, Tax, Financial Services, and Technology solutions in Luxembourg, serving various entities with global expertise and local market understanding | Financial Services | π±πΊ Luxembourg | 334 | 1987 |
| 19 | [InTech](https://www.tamtam.ai/c/intech-kayl) (intech.lu)
InTech is an IT service company specializing in consulting, custom solution development, digital transformation, and innovative projects across various industries | Software Development | π±πΊ Kayl | 334 | 1995 |
| 20 | [Skelia](https://www.tamtam.ai/c/skelia) (skelia.com)
An international leader in building cross-border IT and engineering teams, offering services through a network of service centers in multiple countries | IT Services and IT Consulting | π±πΊ Grand Duchy of Luxembourg | 299 | 2008 |
| 21 | [LSC360](https://www.tamtam.ai/c/lsc360) (lsc360.lu)
LSC Engineering Group is a collection of companies combining expertise in construction and urban development It has become a leader in Luxembourg and expanded internationally | Engineering Services | π±πΊ Contern | 215 | 2013 |
| 22 | [Luxcontrol](https://www.tamtam.ai/c/luxcontrol) (luxcontrol.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 | Construction | π±πΊ Belvaux | 210 | 1978 |
| 23 | [Thales Cyber Solutions Luxembourg](https://www.tamtam.ai/c/thales-cyber-solutions-luxembourg) (thalesgroup.com)
Provides cybersecurity consulting, integrates solutions, and offers 24/7 detection and response services globally for various sectors, leveraging AI and post-quantum cryptography. | Computer and Network Security | π±πΊ Contern | 183 | |
| 24 | [HACA Partners](https://www.tamtam.ai/c/haca-partners) (hacapartners.lu)
HACA Partners specializes in providing tailored governance models, internal and external audits, regulatory compliance, risk management, and consulting services for businesses | Financial Services | π±πΊ Luxembourg | 130 | 2016 |
| 25 | [SustainCERT](https://www.tamtam.ai/c/sustaincert) (sustain-cert.com)
Provides independent validation and verification services for carbon markets and value chains, aligning with international sustainability frameworks. | Environmental Services | π±πΊ Livange | 67 | 2018 |
| 26 | [EBRC - European Business Reliance Centre](https://www.tamtam.ai/c/ebrc-european-business-reliance-centre) (deep.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 | IT Services and IT Consulting | π±πΊ Leudelange | 61 | |
| 27 | [Chemservice Group](https://www.tamtam.ai/c/chemservice-group) (chemservice-group.com)
A global consultancy providing expert advice on national and international chemical regulations, offering scientific, technical, and strategic solutions for clients worldwide | Chemical Manufacturing | π±πΊ Mertert | 44 | 2007 |
| 28 | [Fiduciaire GΓ©nΓ©rale de Luxembourg](https://www.tamtam.ai/c/fiduciaire-generale-de-luxembourg) (fgl.lu)
A respected player in auditing, taxation, and management consultancy services, with expertise spanning 60 years, serving local, cross-border, and international clients | Accounting | π±πΊ Luxembourg | 19 | 1950 |
| 29 | [FRONT Consulting](https://www.tamtam.ai/c/front-consulting) (front-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 | Business Consulting and Services | π±πΊ Strassen | 18 | 2005 |
| 30 | [sk consulting s.a. \| Microsoft Partner](https://www.tamtam.ai/c/sk-consulting-s-a-microsoft-partner) (skc.lu)
Luxembourg-based cloud solution provider offering modern and highly secure Microsoft 365, Dynamics 365 Business Central, and Azure subscription-based solutions | IT Services and IT Consulting | π±πΊ Luxembourg | 14 | 2016 |
| 31 | [Label R.](https://www.tamtam.ai/c/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 | Business Consulting and Services | π±πΊ Luxembourg | 11 | 2017 |
| 32 | [TriFinance Luxembourg](https://www.tamtam.ai/c/trifinance-luxembourg) (trifinance.com)
TriFinance is an international growth company offering finance and control services, focusing on hands-on advice, implementation support, and personalized career development | Financial Services | π±πΊ Luxembourg | 10 | |
| 33 | [OBIZCO](https://www.tamtam.ai/c/obizco) (obizco.com)
A consulting firm based in Luxembourg specializing in aviation communication technologies, business strategy, and cost-benefit analysis for civil and military aviation industries | Aviation and Aerospace Component Manufacturing | π±πΊ Luxembourg | 8 | 2000 |
| 34 | [Go4Values](https://www.tamtam.ai/c/go4values) (go4values.lu)
The company offers family office services, private equity consulting, and portfolio management expertise | Financial Services | π±πΊ Beiler | 4 | 2016 |
| 35 | [MasonBower Luxembourg](https://www.tamtam.ai/c/masonbower-luxembourg) (masonbower.lu)
Consulting services focused on market understanding, data-driven research, and tailored strategic planning for business growth and communication. | Business Consulting and Services | π±πΊ Luxembourg | 3 | |
| 36 | [Ore & Co](https://www.tamtam.ai/c/ore-and-co) (ore-et-co.fr)
Consulting and training firm supporting associations, small businesses, and independent workers in developing their skills through expert networks and tailored guidance | Professional Training and Coaching | π±πΊ Luceau | 2 | 2015 |
| 37 | [Advanced Risk Management Solutions (ARMS) S.A.](https://www.tamtam.ai/c/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 | Financial Services | π±πΊ Windhof | 2 | |
## 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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- [Financial services firms in Luxembourg](https://www.tamtam.ai/l/financial-services-firms-luxembourg) (255)
- [Financial Services companies in Luxembourg](https://www.tamtam.ai/l/financial-services-companies-luxembourg) (171)
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- [Investment Management companies in Luxembourg](https://www.tamtam.ai/l/investment-management-companies-luxembourg) (75)
- [Venture capital and private equity firms in Luxembourg](https://www.tamtam.ai/l/vc-and-private-equity-firms-luxembourg) (71)
- [Manufacturers in Luxembourg](https://www.tamtam.ai/l/manufacturers-luxembourg) (59)
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- [IT Services and IT Consulting companies in Luxembourg](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-luxembourg) (42)
- [SaaS companies in Luxembourg](https://www.tamtam.ai/l/saas-companies-luxembourg) (41)
- [Corporate groups and holding companies in Luxembourg](https://www.tamtam.ai/l/holding-companies-luxembourg) (39)
- [Retail chains in Luxembourg](https://www.tamtam.ai/l/retail-chains-luxembourg) (37)
- [IT services companies in Luxembourg](https://www.tamtam.ai/l/it-services-companies-luxembourg) (37)
- [Software Development companies in Luxembourg](https://www.tamtam.ai/l/software-development-companies-luxembourg) (36)
- [Banking companies in Luxembourg](https://www.tamtam.ai/l/banking-companies-luxembourg) (34)
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- [Family-owned companies in Luxembourg](https://www.tamtam.ai/l/family-owned-companies-luxembourg) (32)
- [Logistics companies in Luxembourg](https://www.tamtam.ai/l/logistics-companies-luxembourg) (31)
- [Construction companies in Luxembourg](https://www.tamtam.ai/l/construction-companies-luxembourg) (30)
- [Transportation, Logistics, Supply Chain and Storage companies in Luxembourg](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-luxembourg) (30)
- [Insurance companies in Luxembourg](https://www.tamtam.ai/l/insurance-companies-luxembourg) (29)
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## The same list elsewhere
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Consulting firms in Europe](https://www.tamtam.ai/l/consulting-firms-in-europe) (8,900)
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Source: https://www.tamtam.ai/l/consulting-firms-luxembourg