This list of companies in Sion predominantly features public sector entities and service providers, alongside some specialized industrial firms. Notable organizations include Etat du Valais - Staat Wallis, a major government administration employer; Hôpital du Valais, a regional healthcare provider; HES-SO Valais-Wallis, a higher education institution; and BCVs | WKB, a banking service provider. Other significant companies are HYDRO Exploitation SA, specializing in renewable energy services, and Le Nouvelliste, a long-established newspaper publisher.
The data shows a strong presence of public administration, healthcare, and education within Sion's economic landscape, indicating a focus on public services and knowledge-based industries. There is also a notable representation of banking and specialized manufacturing, such as H55 in aviation and aerospace, suggesting a diverse yet service-oriented local economy.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Etat du Valais - Staat Wallisvs.ch
One of the largest employers in Valais offering a variety of job opportunities in different services and professions to enhance the quality of life in the region |
2,616 | |||
| 2 |
Hôpital du Valaisspitalwallis.ch
Regional healthcare provider operating multiple hospital centers and specialized institutes, delivering extensive inpatient, outpatient, and emergency medical services. |
1,655 | |||
| 3 |
HES-SO Valais-Wallishevs.ch
Higher education institution offering practical degree programs across art, management, engineering, health sciences, and social work with research institutes. |
1,108 | |||
| 4 |
University of Applied Sciences and Arts Western Switzerland Valais (HES-SO Valais-Wallis)hevs.ch
This company operates five schools in Valais offering 10 degree programs, nine research institutes, with 700 staff members and over 2,500 students |
433 | |||
| 5 |
BCVs | WKBbcvs.ch
Provides retail banking, wealth management for individuals and institutions, and business banking services across the Canton of Valais with extensive digital offerings. |
433 | |||
| 6 |
HYDRO Exploitation SAhydro.ch
Specializing in operating and maintaining hydroelectric power stations, we provide services to owners of electrical generation facilities, producing a significant percentage of Swiss hydroelectric power |
295 | |||
| 7 | 285 | ||||
| 8 |
Le Nouvellistelinktr.ee
Established in 1903, a leading francophone regional daily newspaper in Sion, known for its high local readership and quality editorial content |
162 | |||
| 9 | 144 | ||||
| 10 |
La Collinech.lacolline-skincare.com
Development of advanced skin treatments supporting research to improve skin graft quality, combining safety, efficacy, and sensorial experience. |
92 | |||
| 11 |
Raiffeisen Sion et Régionraiffeisen.ch
A financial institution resulting from several mergers, now the largest Raiffeisen bank in Switzerland, with a focus on growth and market presence |
90 | |||
| 12 |
Banque Cantonale du Valaisbcvs.ch
A Swiss regional bank offering Retail, Private, and Business banking services with a focus on customer segments and regions within the Canton of Valais |
61 | |||
| 13 |
Audacia Groupaudacia.co
Audacia Group empowers e-commerce and online companies to grow through innovative digital experiences and operational excellence, supporting brand development and customer satisfaction |
39 | |||
| 14 |
Service de la culture - Etat du Valais / Dienststelle für Kultur - Staat Wallisvs.ch
The cultural service implements the canton's cultural policy by promoting a diverse and vibrant culture for individual and collective development It focuses on creation, animation, dissemination, cultural education, and protection of cultural heritage |
27 | |||
| 15 |
Sion Airportsionaeroport.ch
The company operates an international airport in the heart of the Alps, offering business, charter, and private flights, along with luxury hangarage and aircraft maintenance services |
22 | |||
| 16 |
Immoval SAimmoval.ch
Active in property development, brokerage, architecture, and general contracting across Fribourg, Vaud, and Valais regions, offering project design and sales. |
17 | |||
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. | |||||
| 17 | 15 | ||||
| 18 |
Berthod Transports SAberthodtransports.ch
A reliable and versatile transportation company offering regional, national, and international services, including exceptional transport, express delivery, ADR/SDR, and storage solutions |
14 | |||
| 19 |
Magic Mountains Cooperationmagicpass.ch
Free unlimited access to cable cars across numerous ski resorts and summer destinations offering skiing, biking, hiking, and family excursions. |
11 | |||
| 20 |
WattAnyWherewattanywhere.com
The company provides solid oxide fuel cell based mobile generators that use ethanol to rapidly deploy ultra-fast chargers for electric vehicles in Europe |
10 | |||
| 21 |
DiverSsiTy SAdiverssity.io
Multisensory, data-driven digital solutions for Autism Spectrum Disorder individuals, enhancing abilities, quality of life, and care through personalized home-based practice |
9 | |||
| 22 |
imvista SAimvista.ch
Specialized in real estate development and construction in the Valais region, serving institutional Swiss investors and private clients with residential and commercial projects Aim to be a trusted partner in the local real estate market |
7 | |||
| 23 |
EnergiQenergiq.ch
EnergiQ SA specializes in renewable energy solutions in Valais, offering holistic approaches for evolving energy needs and promoting independence Contact for sustainable energy future |
5 | |||
| 24 |
bolay.co SAbolay.co
Specialized in high availability and low power electronic systems for remote infrastructure monitoring and control, an Engineering Services Company develops innovative solutions |
5 | |||
| 25 |
Intersanté SA, Switzerlandintersante.com
Specializing in marketing and sales of medical devices for human and animal health, including wound management, disposable products, and innovative equipment in the EU market |
5 | |||
| 26 |
Valcoris & Partnersvalcoris.ch
Specializing in national and international consulting, our company provides objective, personalized advice in private and professional aspects, offering tailored services for clients' needs |
4 | |||
| 27 |
aeChem Life Technologies Sàrlaechem.ch
Revolutionizing diagnostic industry with state-of-the-art technology for accurate detection of low-concentration biomarkers, improving therapeutic outcomes for patients globally |
3 | |||
| 28 |
Nexnet Europegetnextnet.com
Nextnet specializes in generative AI for life sciences, utilizing a large biomedical knowledge graph and proprietary large language models for knowledge discovery in biotechnology |
2 | |||
| 29 |
Labsit Europelabsit.ch
Innovative company focused on creating transformative experiences and crafting success stories through cutting-edge solutions |
2 | |||
| 30 |
Moser & Barras services immobiliers sàrlmoserbarras.ch
Real estate services company founded in 2015, offering property management and condominium administration with a focus on trust, integrity, and availability |
2 | |||
| 31 |
CECIM - Centre de compétences immobilièrescecim.ch
CECIM offers personalized and professional real estate services to institutional clients, individuals, and real estate professionals, focusing on tailored, high-value projects |
2 | |||
| 32 |
123immo.ch123immo.ch
Real estate agency in Sion, Switzerland, specializing in buying, selling, and appraising houses, villas, apartments, chalets, land, and buildings in various locations |
2 | |||
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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 12, 2026.
The same list elsewhere in Switzerland
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