This selection of companies in the Rhône department is primarily composed of law firms and legal service providers. While most are mid-sized firms, the list is headed by In Extenso, a large accounting leader. Other notable firms include Delsol Avocats, which offers legal assistance in business, tax, and employment law, and FIDUCIAL Sofiral Avocats, providing counsel to small businesses. LAMY LEXEL focuses on pragmatic legal advice for company growth.
A clear pattern is the concentration of these firms in Lyon, which serves as the headquarters for almost all the listed companies. The founding dates range broadly, from established firms like RATHEAUX, founded in 1920, to newer entities such as BREMENS | AVOCATS, established in 2019, and AGRUME, a software development firm co-founded by lawyers and engineers.
| # | 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 |
Delsol Avocatsdelsolavocats.com
Providing legal assistance in business, tax, and employment law for industrial companies, financial institutions, non-profit organizations, and local authorities across France. |
245 | |||
| 3 |
FIDUCIAL Sofiral Avocatsfiducial-sofiral-avocats.fr
French inter-bar law firm providing legal counsel to small businesses, artisans, shopkeepers, and professionals through a network of nationwide local offices. |
226 | |||
| 4 |
LAMY LEXELlamy-lexel.com
Provides pragmatic, innovative legal advice and services to support company growth, strategy, risk management, and international development. |
133 | |||
| 5 |
Adaltys Avocatsadaltys.com
Providing legal advice, drafting contracts, representing clients in disputes, and handling arbitration across public, private, and international sectors. |
126 | |||
| 6 |
KELTEN AVOCATSkelten.fr
A business law firm with over 60 specialists providing collaborative advice and defense in various areas to help clients achieve growth and international success |
93 | |||
| 7 |
FBL Avocatsfbl-avocats.com
Providing multidisciplinary legal advice and litigation assistance to companies and managers, operating across borders with global network membership. |
92 | |||
| 8 |
OFFICE NOTARIAL DE L'EUROPEofficenotarialdeleurope.com
A multidisciplinary notary office in Lyon, specializing in legal and tax services for individuals, businesses, and organizations, with a focus on real estate, family, and international law |
49 | |||
| 9 |
Cabinet Requet Chabanelrequetchabanel.com
Specialized law firm in corporate, tax & employment law With a multidisciplinary team, they offer professional services to companies and their executives |
47 | |||
| 10 |
BREMENS | AVOCATSbremens-avocats.com
A firm specializing in business law services, providing legal guidance and support to clients in various industries |
43 | |||
| 11 |
RATHEAUXavocat-lyon-ratheaux.com
Established in 1920, this law firm specializes in business law disciplines such as corporate, tax, contract, social, economic, and intellectual property law, serving national and international clients |
38 | |||
| 12 |
Laurent et Charraslaurentcharras.com
Specializes in intellectual property law, providing legal advice and protection for patents, trademarks, copyrights, and related rights. |
36 | |||
| 13 |
implid Legalimplid.com
An innovative group providing expertise in accounting, law, and consulting to help businesses grow and navigate legal matters for various entities |
34 | |||
| 14 | 30 | ||||
| 15 |
Legi Avocatslegiavocats.eu
A team of 28 business attorneys in Lyon and Macon, providing tailored legal advice and litigation support to entrepreneurs and companies for over 32 years |
26 | |||
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 |
Stemm Avocatsstemm-avocats.fr
A multidisciplinary law firm serving businesses and entrepreneurs, providing solutions to recurrent issues faced by executives and business partners |
24 | |||
| 17 |
Ressource Avocatsressource-avocats.com
A French business law firm offering comprehensive services in corporate law, employment law, taxation, contracts, litigation, innovation, and restructuring with a focus on proximity, creativity, and simplicity |
24 | |||
| 18 |
1629 NOTAIRES1629notaires.com
1629 Notaires is a company that specializes in providing notarial services, legal advice, and assistance with real estate transactions |
23 | |||
| 19 |
Itinéraires Avocatsitineraires-avocats.fr
Itinéraires Avocats specializes in public law and local government law, offering expert legal services to local public sector entities and individuals Based in Lyon and Narbonne |
23 | |||
| 20 |
Cabinet ABDOU Associéscabinet-abdou.fr
Specializing in legal procedures against employers, the company offers a unique counsel combining expertise in social security, labor, and criminal labor law for comprehensive defense strategies |
18 | |||
| 21 |
ACO Avocatsaco-avocats.com
A team of 15 professionals specializing in various legal areas provide counsel and defense to businesses of all sizes |
17 | |||
| 22 |
Les Notaires du Rhônecin-lyon.notaires.fr
An order of professional notaries in Rhône, France, with 520 notaries and 1487 staff, providing legal services in various fields |
16 | |||
| 23 |
Archimède Avocats & Associésarchimede-avocats.fr
Archimède Avocats & Associés provides tailored, high-quality legal services in real estate and tax law, assisting individuals, businesses, and public entities with investment strategies |
16 | |||
| 24 |
SELARL LEVY ROCHE SARDAlevy-roche-sarda.fr
A law firm providing comprehensive legal services for private clients and businesses, specializing in family law, banking law, and corporate law for over 50 years |
16 | |||
| 25 |
Renaud Avocats - Lexicube Socialrenaud-avocats.com
Law firm specializing in advising businesses on HR and social risks, providing legal support for social and business disputes, and assisting with individual and collective social issues |
15 | |||
| 26 | 
PERICLES-AVOCATSpericles-avocats.fr
Specialized business law firm supporting companies and investors with strategic projects including creation, growth, mergers, funding, audits, governance, and development strategy |
14 | |||
| 27 |
Actanotactanot.notaires.fr
Actanot is a notary firm with 6 notaries and 21 staff in 4 areas: Family, Real Estate, Promotion, Business Law & Estate Management Specializing in various legal services |
13 | |||
| 28 | 13 | ||||
| 29 |
Office des Lumièresofficedeslumieres.com
An established notary office in Lyon offering legal services in real estate, family law, business law, wealth management, and more |
13 | |||
| 30 |
KAEUFLING NOTAIRESkaeufling.notaires.fr
An office notarial providing legal support to individuals and businesses across various sectors of the law |
13 | |||
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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 13, 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
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- Consulting firms in the Rhône department 242
- 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
The same list elsewhere in France
- Law firms in France 911
- Law firms in Île-de-France 490
- Law firms in Auvergne-Rhône-Alpes 92
- Law firms in Provence-Alpes-Côte d'Azur 57
- Law firms in Occitanie 49
- Law firms in Nouvelle-Aquitaine 47
- Law firms in Grand Est 42
- Law firms in the Bouches-du-Rhône department 33
- Law firms in Hauts-de-France 30
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- Law firms in the Gironde department 27
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The same list elsewhere
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