The Rhône department features a concentration of consulting firms, primarily mid-sized, with a strong presence in IT services and business consulting. Notable companies include In Extenso, a French accounting leader; EFOR, which supports pharmaceutical and medtech companies; SOLUTEC, providing IT engineering and consulting; and CTC, offering solutions for the leather, footwear, and textile industries. Many of these firms were founded in the 1990s and 2000s, reflecting a period of growth in specialized services.
A significant pattern is the prevalence of companies headquartered in Lyon and Villeurbanne, indicating these cities as key hubs for consulting activities within the region. The sector is diverse, spanning from accounting and HR to IT and environmental services, suggesting a broad demand for expert advice across various industries.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
In Extensoinextenso.fr
French accounting leader with broad services for businesses. Offers accounting, administrative, legal, tax, social, M&A, tourism, wealth, innovation, and legal advice. |
3,533 | |||
| 2 |
EFORefor-group.com
supports pharmaceutical, biotech, and medtech companies in ensuring production compliance and expediting the market launch of safe and effective medical products |
2,913 | |||
| 3 |
entreprise individuellegrandclement.fr
This company specializes in web development, SEO, online advertising campaigns, VBNet development, e-commerce, Access development, training, and consulting for SMEs |
2,587 | |||
| 4 |
STSsts-certified.com
Technical advisory and conformity assessment services for solar and storage components, including manufacturing audits and inspections for global renewable energy project developers. |
1,900 | |||
| 5 |
SOLUTECsolutec.fr
Provides IT engineering, consulting, and services. Supports clients through project phases like management, infrastructure, operations, and coordination across various sectors. |
1,659 | |||
| 6 |
CTCctcgroupe.com
CTC offers cross-disciplinary solutions for the leather, footwear, and textile industries, focusing on ethical practices, cost savings, waste reduction, and performance improvement worldwide |
1,622 | |||
| 7 |
Domino RHdomino-rh.com
Established in 1999, this group offers temporary assignments, recruitment, training, HR consulting, and management services with a national network across France and expanding internationally |
1,144 | |||
| 8 | 835 | ||||
| 9 |
Cabinet Merlincabinet-merlin.fr
Consulting and engineering services for water production, wastewater treatment, waste management, energy production, urban planning, and mobility for local authorities and industries. |
589 | |||
| 10 | 586 | ||||
| 11 |
CONSULTYSconsultys.com
Provides engineering, production, quality, R&D, and regulatory affairs consulting services to the bio industry for drug development projects. |
550 | |||
| 12 |
Endrixendrix.com
Team of 200 professionals supporting over 5000 clients with ISO 9001 certified quality, specialized technology, and expert business performance services. |
515 | |||
| 13 |
implidimplid.com
With over 40 years of experience, our team specializes in helping businesses improve organization, regulatory compliance, and system performance across various regions |
512 | |||
| 14 |
ING'EUROPing-europ.com
Specializes in engineering large industrial projects, managing from project control to assembly coordination, testing, and commissioning processes. |
501 | |||
| 15 |
delaware Francedelaware.pro
Helps companies with daily IT system use, guiding business transformation, deploying SAP and Microsoft solutions, and providing after-sales service. |
434 | |||
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 |
Percall Grouppercallgroup.com
French IT engineering services company, specializing in CAD, PLM, and IoT software integration for major high-tech industries, a PTC partner. |
347 | |||
| 17 |
PIMAN Grouppiman-group.fr
Consulting in industrial project and investment management for large industrial groups and SMEs, nationally and internationally, since 2009. |
331 | |||
| 18 |
EODD ingénieurs conseilseodd.fr
Provides expert ecological transition consulting and engineering services for sustainable projects, offering solutions for urban planning, energy, biodiversity, and waste management. |
319 | |||
| 19 |
Amiltoneamiltone.com
Partner in digital projects since 2012, specializing in user-centered design, data-driven strategies, AI integration, automated deployment, and cloud/on-premise infrastructure scaling Transforming businesses digitally |
311 | |||
| 20 |
GUARANÍguarani.fr
Provides digital services to over 150 partner companies with expertise, openness, support, and responsibility, fostering individual growth in a healthy environment. |
303 | |||
| 21 |
ERAS Engineeringeras.com
Providing high value-added engineering services for medium scale projects in chemicals, food, pharmaceuticals, cosmetics, and energy sectors. |
292 | |||
| 22 |
CCI Lyon Métropole Saint-Etienne Roannelyon-metropole.cci.fr
Supporting businesses, shop owners, and entrepreneurs in Lyon, Rhône, and Loire regions to enhance competitiveness and manage key infrastructure for regional attractiveness |
290 | |||
| 23 |
Alixio Mobilitéalixiomobilite.fr
Specializes in professional mobility and career transition support, offering tailored solutions respecting organizational culture and human challenges. |
279 | |||
| 24 |
ABGi Franceabgi-france.com
Support clients in structuring, financing, and executing research, development, innovation, operational optimization, technology adoption, and sustainable transformation projects internationally. |
261 | |||
| 25 | 246 | ||||
| 26 |
APLUSAaplusaresearch.com
A global healthcare market research consultancy specializing in brand performance monitoring, patient journey assessments, and real-world data insights for informed business decisions |
246 | |||
| 27 |
IM Projetimprojet.fr
Specializing in managing complex projects across various sectors, providing organization, planning, coordination, and tools for project success Emphasis on team collaboration and professional development |
243 | |||
| 28 |
3C Expertises3c-expertises.fr
A team of engineers, architects, and building technicians dedicated to serving insurers in various construction damage domains with competence and efficiency |
242 | |||
| 29 | 233 | ||||
| 30 |
SRAgroupe-sra.fr
The company specializes in optimizing information systems for businesses, offering sustainable management solutions, technical expertise, and personalized service across various locations |
212 | |||
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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 the Rhône department
- The largest companies in the Rhône department 4,813
- Multinational companies in the Rhône department 577
- Companies with in-house R&D in the Rhône department 509
- Professional services firms in the Rhône department 400
- Manufacturers in the Rhône department 322
- Retail chains in the Rhône department 302
- IT services companies in the Rhône department 286
- SaaS companies in the Rhône department 284
- Software Development companies in the Rhône department 264
- IT Services and IT Consulting companies in the Rhône department 253
- Hardware manufacturers in the Rhône department 243
- Business Consulting and Services companies in the Rhône department 219
- Distributors and wholesalers in the Rhône department 185
- Higher Education companies in the Rhône department 155
- Education providers in the Rhône department 154
- Law Practice companies in the Rhône department 152
- Real Estate companies in the Rhône department 151
- Family-owned companies in the Rhône department 149
- Subscription businesses in the Rhône department 149
- Construction companies in the Rhône department 140
- Pharmaceutical companies in the Rhône department 134
- Financial services firms in the Rhône department 132
- Advertising Services companies in the Rhône department 126
- Events Services companies in the Rhône department 126
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 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 the Isère department 57
- Consulting firms in Paris 1,532
- Consulting firms in Lyon 163
- Consulting firms in Toulouse 98
- Consulting firms in Boulogne-Billancourt 88
- Consulting firms in Levallois-Perret 83
- Consulting firms in Neuilly-sur-Seine 73