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Top 30 critical infrastructure operators in the Haute-Savoie department

Tamtam tracks 35 critical infrastructure operators headquartered in the Haute-Savoie department. This list ranks the 30 largest by number of employees on LinkedIn, led by Crédit Agricole des Savoie, CH Annecy Genevois and Centre Hospitalier Alpes Léman. Their median headcount is 145. Half of them were founded in 1980 or later. The most common headquarters are Annecy (9) and Annemasse (3).

🇫🇷 Haute-Savoie30 companiesUpdated Nov 11, 2026

The critical infrastructure operators in Haute-Savoie are mostly public service providers, with a strong presence of healthcare institutions and government administrations. These are mid-sized to large organizations. Crédit Agricole des Savoie is a regional mutual bank, while CH Annecy Genevois and Centre Hospitalier Alpes Léman are major hospitals. Agglomération du Grand Annecy coordinates economic and social initiatives across 34 communes.

Key sectors include hospitals and health care, represented by institutions like Hôpitaux du Léman, which provides comprehensive care for Chablais residents, and Établissement Public de Santé Mentale 74, specializing in mental health services. Government administration entities such as Service Départemental d'Incendie et de Secours de la Haute-Savoie, which handles emergency responses, are also prominent. A notable pattern is the concentration of healthcare and public service providers across the department.

#CompanyIndustryHeadquarters EmployeesFounded
1
Crédit Agricole des Savoietous-acteurs-des-savoie.coop

Regional mutual bank with 166 agencies and 2200 employees serving 705,000 clients, focused on innovation, customer relationships, and local presence.

Banking 🇫🇷 Annecy 1,625 1885
2
CH Annecy Genevoisch-annecygenevois.fr

A leading hospital in Haute-Savoie resulting from the merger of Annecy and St Julien-en-Genevois hospitals, with over 4600 dedicated staff providing top-notch care

Hospitals and Health Care 🇫🇷 Épagny Metz-Tessy 810 n/a
3
Centre Hospitalier Alpes Lémanch-alpes-leman.fr

A hospital center providing comprehensive care, promoting public hospital values, offering improved patient conditions, ensuring diverse healthcare options, and prioritizing environmental sustainability

Hospitals and Health Care 🇫🇷 Contamine-sur-Arve 651 n/a
4
CENTRE HOSPITALIER ANNECY GENEVOIS

Hospital offering comprehensive medical services including patient care, diagnostics, treatment, and healthcare support in the Auvergne-Rhône-Alpes region.

Medical Practices 🇫🇷 Épagny-Metz-Tessy 649 n/a
5
Hôpitaux du Lémanhopitauxduleman.fr

Provides comprehensive health care services for 130,000 Chablais residents, including hospitalizations, emergency care, medical consultations, and elderly care.

Hospitals and Health Care 🇫🇷 Thonon-les-Bains 526 1998
6
Établissement Public de Santé Mentale 74ch-epsm74.org

Provides comprehensive mental health services, including inpatient care, outpatient centers, specialized units for adults and children across several locations.

Hospitals and Health Care 🇫🇷 La Roche-sur-Foron 404 1975
7
Agglomération du Grand Annecygrandannecy.fr

Coordination of economic, ecological, mobility, housing, and social initiatives across 34 communes to enhance residents' quality of life.

Government Administration 🇫🇷 Annecy 375 2017
8
Service Départemental d'Incendie et de Secours de la Haute-Savoiesdis74.fr

The company is a public firefighting department in Haute-Savoie, France, consisting of professional and volunteer firefighters, as well as administrative and technical staff They respond to various natural, industrial, technological, and everyday risks in the region

Government Administration 🇫🇷 Annecy 314 n/a
9
Hôpitaux du Pays du Mont-Blanchpmb.fr

Provides comprehensive healthcare services across four sites, including hospitals and nursing homes, with over 1,130 professionals, advanced technical facilities, and medical imaging.

Hospitals and Health Care 🇫🇷 Sallanches 306 n/a
10
Annemasse Aggloannemasse-agglo.fr

Management of environment, economy, housing, transport, culture, and social services to improve quality of life in a transborder urban area.

Government Administration 🇫🇷 Annemasse 290 2007
11
CPAM de Haute-Savoieameli.fr

A social security organization in Haute-Savoie, part of a national network, working to protect the health of over 60 million insured individuals through various healthcare projects

Government Administration 🇫🇷 Annecy 227 n/a
12
ATMB - Autoroutes et Tunnel du Mont Blancatmb.com

Management and operation of mountain highways and the Mont Blanc Tunnel, ensuring safety, mobility, and sustainable transport in the Alps.

Truck Transportation 🇫🇷 Bonneville 206 1957
13
HOPITAL PRIVE PAYS DE SAVOIEhopital-prive-pays-de-savoie-annemasse.ramsaysante.fr

A private hospital near Switzerland and ski resorts, providing quality care in a serene natural setting since 2012 with a team of 400 employees and 130 practitioners

Hospitals and Health Care 🇫🇷 Annemasse 206 2012
14
Clinique Générale Annecy - Vivalto Santéclinique-generale-annecy.vivalto-sante.com

Multidisciplinary healthcare facility providing surgical interventions, maternity care, chemotherapy, emergency services, and daily medical consultations with advanced technical resources.

Hospitals and Health Care 🇫🇷 Annecy 192 1924
15
HBG Hélicoptères Groupehbg-helicopteres.aero

Family group global helicopter operations, passenger transport, rescue, air work, pilot training, maintenance, sales, and leasing in Europe, Africa, South America, French Polynesia.

Airlines and Aviation 🇫🇷 Annemasse 145 n/a

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16
Syanesyane.fr

Public energy and digital services provider supporting local authorities with electricity, gas, renewable energy, lighting, mobility, and digital infrastructure projects.

Government Administration 🇫🇷 Poisy 128 1950
17
CLINIQUE D'ARGONAYclinique-d-argonay.ramsaysante.fr

A leading surgical facility in Annecy, known for its high patient satisfaction rate (over 95%) due to renovated operating rooms and quality care

Hospitals and Health Care 🇫🇷 Argonay 126 1976
18
CREDIT MUTUEL SAVOIE-MONT BLANCcreditmutuel.fr

With 1,000 employees, this company offers a diverse range of banking services to individuals, professionals, and businesses in Haute-Savoie and Savoie

Banking 🇫🇷 Annecy 121 1990
19
Fondation Aliafondationalia.fr

The Foundation Alia prioritizes person-centered care, promoting human values, responsiveness to emerging healthcare needs, and collaboration for quality services in Savoie and Haute-Savoie

Hospitals and Health Care 🇫🇷 Bonneville 114 1922
20
Clinique des Valléescdv-inicea.fr

The clinic aims to enhance hospitalization by providing exceptional infrastructure and resources in a peaceful and strategic location near Geneva and Annecy

Hospitals and Health Care 🇫🇷 Ville-la-Grand 102 n/a
21
SILA (Syndicat Mixte du Lac d'Annecy)sila.fr

Established in 1957 to protect Lake Annecy, the company specializes in wastewater treatment, waste management, environmental preservation, and water cycle management

Government Administration 🇫🇷 Annecy 75 1957
22
COMUNICcomunic.fr

A consulting and services company in IT, Telephony, Video Surveillance, and Web for professionals, providing comprehensive solutions from conception to maintenance

IT Services and IT Consulting 🇫🇷 Annecy 59 2004
23
SIBRA (Société Intercommunale des Bus de la Région Annécienne)sibra.fr

Operates and manages urban and interurban bus services across Grand Annecy and Rumilly, promoting sustainable mobility and multimodal connections.

Truck Transportation 🇫🇷 Annecy 58 1980
24
Hôpital Départemental Dufresne Sommeillerhopital-dufresne-sommeiller.fr

L'HDDS is a community hospital offering a wide range of healthcare and social services focused on caring for vulnerable adults losing autonomy

Hospitals and Health Care 🇫🇷 La Tour 56 1923
25
Centre Hospitalier Gabriel DEPLANTEch-rumilly.fr

Hospital located in the heart of Rumilly city, providing healthcare services to the local community

Hospitals and Health Care 🇫🇷 Rumilly 45 n/a
26
O des Aravisodesaravis.com

Specializing in water management in the mountains, this public local company handles water supply, sanitation, and stormwater for communities and clients while promoting health, environment, and local economy

Utilities Administration 🇫🇷 Saint-Jean-de-Sixt 44 1996
27
Groupe Jean-Claude Mermetmermetjc.com

Specialized freight transport including pallets, hazardous materials, storage, and logistics across France and Europe with environmental focus.

Truck Transportation 🇫🇷 Marnaz 40 1968
28
HOPITAL ANDREVETAN - Centre de rééducation et d'hébergementch-andrevetan.fr

The company is a public healthcare facility offering rehabilitation, long-term care for elderly, nursing services at home, and temporary accommodation for the elderly

Hospitals and Health Care 🇫🇷 La Roche-sur-Foron 36 2017
29
MGEN Evian SSRproximite.mgen.fr

Specialized in post-acute care and rehabilitation, offering a total capacity of 200 beds for both inpatient and day hospitalization services

Hospitals and Health Care 🇫🇷 Évian-les-Bains 35 n/a
30
AUTOCARS PAYS DE SAVOIEaps74.fr

The company provides a range of transportation services such as school transport, regular and urban transport, airport transfers, and tours in France and Europe

Truck Transportation 🇫🇷 La Roche-sur-Foron 28 2011

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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 11, 2026.

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