The consulting firms in Lille include a mix of established and young companies, primarily focused on business, IT, and specialized services. ACALY Conseil en Ingénierie provides technical and organizational consulting, while NIKITA offers consulting and creative communication services. Diligentia specializes in accounting and auditing, and Citéo Médiation focuses on mediation and facilitation for societal change. Les-Tilleuls.coop designs and develops open-source web and mobile projects.
A notable pattern among these firms is a strong presence of IT services and consulting, with companies like ICSIS, BeWe, and Meedz specializing in digital transformation, app development, and cybersecurity. The majority of these firms were founded in the 2010s, indicating a relatively recent growth in the consulting sector in Lille.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
ACALY Conseil en Ingénierieacaly.eu
The company provides technical and organizational consulting services, offers work packages for project outsourcing, and focuses on research and innovation for clients' success |
183 | |||
| 2 | 137 | ||||
| 3 |
Diligentia | Audit • Conseil • Expertisediligentia.fr
An accounting and auditing firm in Northern France offering personalized support in accounting, taxation, legal, and social matters for businesses and professionals |
133 | |||
| 4 |
Citéo Médiationciteo.org
Mediation and facilitation agency assisting businesses, communities, and citizens in navigating societal change through tailored guidance promoting understanding, participation, and sustainable collective action |
125 | |||
| 5 |
Les-Tilleuls.cooples-tilleuls.coop
Design and development of innovative web and mobile projects using open-source software, with democratic cooperative governance and profit sharing. |
74 | |||
| 6 | 57 | ||||
| 7 | 37 | ||||
| 8 | 36 | ||||
| 9 |
ORSEU ETHIXorseu-ethix.fr
Provide expertise and support to CSE representatives for economic understanding, negotiation, social policy improvement, and adapting to legislative changes. |
34 | |||
| 10 |
OZEO Consultingozeo-consulting.fr
OZEO Consulting is a young digital service company focusing on differentiated intellectual services with strong human values and excellence |
32 | |||
| 11 |
ZeTracezetrace.com
A leading consultancy specializing in digital commerce transformation and sustainability for medium to large B2C and B2B organizations, offering expertise and recruitment services |
31 | |||
| 12 |
L’Échappée Bièreevent.echappee-biere.com
A tourism and event agency specializing in beer, offering unique experiences, tours, and events focused on discovering the French and international beer culture |
26 | |||
| 13 | 24 | ||||
| 14 | 22 | ||||
| 15 |
Talositalosi.com
Talosi is a new generation IT consulting company focused on personalized and transparent services, where employees feel at home They embrace a geek culture |
21 | |||
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. | |||||
| 16 |
Data-IT - Groupe IT & You ©️data-it.fr
Data-IT is a high-end IT services company specialized in office and computer technologies, offering expertise and technical skills to develop and maintain clients' information systems |
20 | |||
| 17 |
Solenersolener.fr
Solener is a sustainable building consultancy with over 30 years of experience, focusing on energy efficiency, environmental optimization, and innovative solutions |
17 | |||
| 18 | 13 | ||||
| 19 |
Sapiologiesapiologie.com
A sustainability consulting firm offering life cycle analysis to measure environmental, social, and ethical impacts, providing recommendations for sustainable practices |
12 | |||
| 20 |
symbolist.symbolist.ai
A digital marketing and CRM agency based in Lille, euraNov aims to enhance businesses' digital performance and streamline innovative solutions implementation |
11 | |||
| 21 |
AFIGEC AUDIT HDFaltusfortin.fr
Accounting firm located in Lille, France, offering professional services in financial management, tax preparation, and auditing for businesses and individuals |
10 | |||
| 22 |
Point Triplepointtriple.com
Group of senior entrepreneurs and experts providing holistic, strategic, and creative consulting solutions focused on impactful, efficient models serving organizations and the planet. |
9 | |||
| 23 |
SCHOLA INGENIERIEschola-ingenierie.fr
The company is a training organization and consulting firm specializing in quality compliance, regulatory compliance, and training for employees and training teams |
8 | |||
| 24 |
NEOBIZneo-biz.fr
Operational consulting agency specializing in B2B commercial development, delivering qualified leads and business meetings to accelerate client growth. |
7 | |||
| 25 |
Cabinet Michel Simond Hauts de Francemsimond.fr
The company provides confidential support for buying and selling businesses and commercial properties, specializing in Mergers and Acquisitions |
7 | |||
| 26 |
Cécile Boury Conseil Internationalcbci-france.eu
Assists companies with international business, offering strategic and operational support for commercial and marketing development, including export projects and market entry. |
6 | |||
| 27 |
FCD conseil
Specializing in restaurant creation and development, we offer comprehensive services including market research, legal assistance, business planning, financing, branding, and staff recruitment |
4 | |||
| 28 |
SOCO&FI (Société Conseil & Finances)socoandfi.fr
A consulting firm specializing in supporting SMEs, startups, and social economy structures in strategy and financial engineering to optimize decision-making and performance |
4 | |||
| 29 |
Tidjeetidjee.com
A specialized consulting firm focusing on innovation transformation and financing Offers decision support, execution security, and launches projects in training, automation, and AI |
2 | |||
| 30 |
NSP Expertisensp-expertise.com
NSP EXPERTISE is a procurement services company focused on improving profitability and creating savings through innovative and pragmatic solutions Contact us for potential savings evaluation |
2 | |||
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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 11, 2026.
More company lists in Lille
- The largest companies in Lille 891
- SaaS companies in Lille 104
- Retail chains in Lille 77
- Software Development companies in Lille 77
- Multinational companies in Lille 76
- IT Services and IT Consulting companies in Lille 66
- Companies with in-house R&D in Lille 56
- IT services companies in Lille 56
- Professional services firms in Lille 54
- Education providers in Lille 51
- Public sector organisations in Lille 50
- Real Estate companies in Lille 43
- Companies with a mobile app in Lille 37
- Higher Education companies in Lille 36
- Professional Training and Coaching companies in Lille 32
- Law Practice companies in Lille 31
- Subscription businesses in Lille 31
- Advertising Services companies in Lille 30
- Technology, Information and Internet companies in Lille 30
- Critical infrastructure operators in Lille 28
- Business Consulting and Services companies in Lille 28
- Civic and Social Organizations companies in Lille 28
- Recruitment and staffing agencies in Lille 26
- Government Administration companies in Lille 25
The same list elsewhere in France
- Consulting firms in France 4,252
- Consulting firms in Île-de-France 2,408
- Consulting firms in the Hauts-de-Seine department 563
- Consulting firms in Auvergne-Rhône-Alpes 412
- Consulting firms in the Rhône department 242
- Consulting firms in Occitanie 236
- Consulting firms in Provence-Alpes-Côte d'Azur 233
- Consulting firms in Nouvelle-Aquitaine 166
- Consulting firms in Grand Est 165
- Consulting firms in Hauts-de-France 161
- Consulting firms in Pays de la Loire 161
- Consulting firms in the Haute-Garonne department 145
- Consulting firms in the Bouches-du-Rhône department 129
- Consulting firms in the Nord department 115
- Consulting firms in Brittany 99
- Consulting firms in the Loire-Atlantique department 94
- Consulting firms in the Gironde department 82
- Consulting firms in the Yvelines department 72
- Consulting firms in Paris 1,532
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- Consulting firms in Toulouse 98
- Consulting firms in Boulogne-Billancourt 88
- Consulting firms in Levallois-Perret 83
- Consulting firms in Neuilly-sur-Seine 73