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Critical infrastructure operators headquartered in Canton of Zurich

Tamtam tracks 70 critical infrastructure operators headquartered in Canton of Zurich. This list ranks all of them by number of employees on LinkedIn, led by UBS, Credit Suisse and Zurich Insurance. Their median headcount is 685. Half of them were founded in 1980 or later. The most common headquarters are Zurich (46) and Wallisellen (2).

🇨🇭 Canton of Zurich70 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
UBSubs.com

Wealth management, investment banking, asset management, and banking services globally, focusing on continuous growth, learning, innovation, and collaboration among diverse talents

Financial Services 🇨🇭 Zurich 117,814 1862
2
Credit Suisseubs.com

A global wealth manager offering services in wealth management, banking, asset management, and investment banking, focusing on diversity and empowerment

Banking 🇨🇭 Zurich 59,000 1856
3
Zurich Insurancezurich.com

Leading global multi-line insurer serving individuals, small businesses, and large corporations across more than 200 countries and territories since 1872.

Insurance 🇨🇭 Zurich 48,589 n/a
4
Swissportswissport.com

The company provides airport ground services for passengers and handles air freight worldwide, operating at numerous airports on six continents

Airlines and Aviation 🇨🇭 Zurich Airport 42,000 1996
5
Swiss Reswissre.com

A leading global provider of reinsurance, insurance, and risk transfer solutions, offering tailor-made coverage to insurance companies, corporations, and public sector clients worldwide

Insurance 🇨🇭 Zurich 15,263 1863
6
Julius Baerjuliusbaer.com

Global financial institution with a presence in over 60 locations worldwide, offering a range of wealth management services to clients

Banking 🇨🇭 Zurich 8,153 1890
7
Swiss International Air Linesswiss.com

Airline operating from Zurich and Geneva, connecting Switzerland to over 110 global destinations with advanced fleet and cargo services.

Airlines and Aviation 🇨🇭 Zurich Airport 6,315 2002
8
Zürcher Kantonalbankzkb.ch

A globally connected universal bank in Zurich, rooted in the local economy, providing expertise, responsibility, and state guarantee for financial stability

Banking 🇨🇭 Zurich 5,415 1870
9
Sunrisesunrise.ch

A telecommunications company in Switzerland offering mobile, Internet, TV, and fixed network services with leading gigabit fiber optic and 5G networks

Telecommunications 🇨🇭 Glattpark (Opfikon) 5,145 2021
10
Universitätsspital Zürichusz.ch

Provides comprehensive medical care, research, and education with interdisciplinary collaboration, serving thousands of patients annually in Zurich.

Hospitals and Health Care 🇨🇭 Zurich 4,901 1204
11
SIXsix-group.com

A leading provider of securities, payments, and financial information services, driving efficiency and innovation in the Swiss and Spanish financial centers

Financial Services 🇨🇭 Zurich 4,573 n/a
12
Stadt Zürichstadt-zuerich.ch

Over 30,000 employees in various roles contribute to maintaining and improving quality of life in Switzerland's largest city.

Executive Offices 🇨🇭 Zurich 4,132 n/a
13
Hirslandenhirslanden.ch

Leading Swiss medical network offering top-quality healthcare services with 17 hospitals, radiology and radiotherapy centers, advanced technology, affiliated doctors, and qualified personnel since 1990

Hospitals and Health Care 🇨🇭 Opfikon 3,932 1990
14
Swiss Lifeswisslife.ch

A leading provider of life and pensions, financial solutions in Europe, helping clients prepare their financial future through tailored products and services

Financial Services 🇨🇭 Zurich 3,250 1857
15
AXA Switzerlandaxa.ch

An insurance company offering personal, property, liability, and life insurance, as well as healthcare and occupational benefits They focus on innovation, digital processes, and customer support

Insurance 🇨🇭 Winterthur 2,791 1875
16
Helsana Insurance Company Ltdhelsana.ch

Swiss health insurance company focusing on motivation, trust, equal opportunities, and strong corporate culture for employees and clients.

Insurance 🇨🇭 Dübendorf 2,441 1899
17
Allianz Suisseallianz.ch

Focusing on future-oriented collaboration, we develop products and services to inspire confidence, prioritize inclusion, diversity, and offer individual growth opportunities for employees Providing comprehensive support nationwide

Insurance 🇨🇭 Wallisellen 2,011 1980
18
Migros Bankmigrosbank.ch

Helps clients make better, faster, simpler, and more human financial decisions, focusing on managing and growing money.

Banking 🇨🇭 Zurich 1,758 n/a
19
Stadtspital Zürichstadt-zuerich.ch

Healthcare provider with over 4000 employees, serving 35,000 inpatients and 220,000 outpatients Top 10 hospital in Switzerland, offering comprehensive medical care

Hospitals and Health Care 🇨🇭 Zurich 1,630 1953
20
Kantonsspital Winterthurksw.ch

Provides comprehensive hospital and healthcare services including patient care, medical treatments, and health support in Winterthur, Switzerland.

Hospitals and Health Care 🇨🇭 Winterthur 1,568 n/a
21
SWICA Organisation de Santéswica.ch

Provides comprehensive health and accident insurance coverage for individuals and companies, focusing on high-quality service across Switzerland.

Insurance 🇨🇭 Winterthur 1,508 1992
22
Planzerplanzer.ch

Family-owned logistics company offering national and international parcel transport, warehousing, and eco-friendly delivery services across multiple countries.

Transportation, Logistics, Supply Chain and Storage 🇨🇭 Dietikon 1,469 1936
23
Kinderspital Zürichkispi.uzh.ch

Leading pediatric hospital in Switzerland providing acute care, rehabilitation, and outpatient services for children with a focus on comprehensive and family-centered care

Hospitals and Health Care 🇨🇭 Zurich 1,317 1868
24
Zurich Airport Ltdflughafen-zuerich.ch

Management and operation of international airport facilities, commercial centers, and real estate development with focus on quality service and reliability.

Airlines and Aviation 🇨🇭 Zürich-Flughafen 1,268 n/a
25
VZ VermögensZentrumvermoegenszentrum.ch

Switzerland’s top financial service provider offering expertise in retirement planning, investments, insurance, estate planning, tax optimization, and financial management for individuals and businesses

Financial Services 🇨🇭 Zurich 1,157 1993
26
Psychiatrische Universitätsklinik Zürichpukzh.ch

Leader in psychiatric care, research, and education in Zurich area with over 150 years of experience Providing innovative treatment for mental illnesses in all age groups

Hospitals and Health Care 🇨🇭 Zurich 1,032 1870
27
ewzewz.ch

Provide renewable energy to households, develop sustainable energy solutions, expand intelligent power grids, and implement digital infrastructure for urban development.

Utilities 🇨🇭 Zurich 977 1892
28
AMEOS Gruppeameos.eu

A healthcare company offering a variety of medical services including acute care, nursing care, rehabilitation, and inpatient/outpatient care at multiple locations with 12,000 employees

Hospitals and Health Care 🇨🇭 Zurich 865 2002
29
EKZekz.ch

Supplying reliable, ecological electricity to one million people, expanding renewable energy sources, maintaining extensive power grid, supporting electric mobility solutions.

Utilities 🇨🇭 Zurich 826 1908
30
Verkehrsbetriebe Zürichvbz.jobs

Provides high-quality public transportation services in Zürich and surrounding areas, operating daily with extensive coverage and reliable schedules.

Urban Transit Services 🇨🇭 Zurich 773 1896
31
Sanitas Krankenversicherungsanitas.com

Providing tailored health insurance models covering illness, accidents, and maternity for individuals, families, and businesses across Switzerland.

Insurance 🇨🇭 Zurich 766 1958
32
Medbase Gruppemedbase.ch

Leading provider of integrated healthcare services in Switzerland, offering coordinated 360° care from prevention to rehabilitation through a network of medical centers, pharmacies, and dental centers

Health and Human Services 🇨🇭 Winterthur 732 n/a
33
Kantonspolizei Zürichzh.ch

The organization is responsible for crime, security, and traffic policing in Zurich, covering prevention, repression, and intervention tasks on behalf of the government and population

Public Safety 🇨🇭 Zurich 732 1804
34
AsstrA-Associated Traffic AGasstra.com

AsstrA provides tailored logistics solutions globally, offering transportation services across road, rail, sea, and air, with a focus on reliability and customer satisfaction

Transportation, Logistics, Supply Chain and Storage 🇨🇭 Zurich 691 1993
35
Cembracembra.ch

A Swiss bank offering simple financing solutions like loans, leases, credit cards, and savings products, with a focus on employee empowerment and innovation

Financial Services 🇨🇭 Zurich 685 2013
36
Universitätsklinik Balgristbalgrist.ch

A world-leading hospital specializing in musculoskeletal and spinal cord injuries, offering interdisciplinary medical care, nursing, therapies, social support, and legal services

Hospitals and Health Care 🇨🇭 Zurich 678 1912
37
Generali Switzerlandgenerali.ch

The company provides insurance for real life scenarios, with a focus on ensuring the well-being and protection of individuals Connect with us on social media

Insurance 🇨🇭 Adliswil 636 1987
38
UPC Schweiz GmbHupc.ch

A leading provider of communication and entertainment, offering high-speed internet, mobile services, TV entertainment, and technology solutions for residential and business customers

Telecommunications 🇨🇭 Wallisellen 599 1994
39
Spital Limmattalspital-limmattal.ch

Medical institution in Schlieren providing comprehensive healthcare services to over 73,700 patients annually, with 200 beds, 134 in the care center, and 10 in the day center

Hospitals and Health Care 🇨🇭 Schlieren 599 1970
40
Swisscard AECS GmbHswisscard.ch

Swisscard AECS is a Swiss joint venture offering leading credit card brands including American Express, MasterCard, and Visa to customers through Credit Suisse AG

Financial Services 🇨🇭 Horgen 598 1998
41
Visecaviseca-payment.ch

A leading company in payment cards offering tailored products and services for cashless transactions, serving banks and customers with modern card options

Financial Services 🇨🇭 Zurich 514 2000
42
DPD Switzerlanddpd.com

A provider of efficient domestic and international express and parcel services, connecting major business regions quickly with a first-class range of services

Transportation, Logistics, Supply Chain and Storage 🇨🇭 Buchs ZH 464 1993
43
Union Bank of Switzerlandwikipedia.org

A global financial institution providing banking and wealth management services, operating in various markets worldwide with a focus on client satisfaction

Investment Banking 🇨🇭 Zurich 363 1912
44
MS Reinsurancemsreinsurance.com

Global reinsurer providing best-in-class reinsurance products and services worldwide, helping clients manage risks with deep expertise and customized solutions

Insurance 🇨🇭 Zurich 306 n/a
45
Sygnum Banksygnum.com

A global digital asset banking group enabling investments in digital assets with trust, offering banking, asset management, tokenisation, and B2B services

Financial Services 🇨🇭 Zurich 295 2017
46
Switchswitch.ch

Development and enhancement of integrated ICT solutions focusing on network, security, identity management, cloud computing, and domain registry services.

Software Development 🇨🇭 Zurich 201 1987
47
Stiftung Auffangeinrichtung BVGaeis.ch

A non-profit organization in Switzerland provides mandatory occupational pension coverage for employers and individuals, managing over 15 million customers' accounts With three locations and 200 employees, the organization plays a crucial role in supporting the stability of the pension system

Insurance 🇨🇭 Zurich 155 1983
48
Maerki Baumann & Co. AGmegaplusredirection.tedata.net

A Zurich-based private bank offering investment advisory, asset management, and services to external wealth managers, with a focus on blockchain and crypto companies

Banking 🇨🇭 Zurich 122 1932
49
SIX Securities Servicessix-securities-services.com

Premier post-trade partner providing efficient services such as clearing, settlement, custody, asset servicing, collateral management and electronic transaction platforms

Financial Services 🇨🇭 Zurich 116 1970
50
Bergos AGbergos.ch

An independent Swiss private bank with a history dating back to 1590, specializing in asset management and advisory services for private clients and family entrepreneurs

Banking 🇨🇭 Zurich 112 2018
51
ThomasLloyd Groupthomas-lloyd.com

Leading provider of clean energy, technology, and finance solutions focused on Asia, driving sustainable development and climate change mitigation.

Environmental Services 🇨🇭 Stadtkreis 2 71 2003
52
radicantradicant.com

The company is a pioneering digital bank based in Switzerland that focuses on sustainability and environmental responsibility

Financial Services 🇨🇭 Zurich 60 2021
53
Zürcher Verkehrsverbund ZVVzvv.ch

The company coordinates public transportation in the Zurich area, planning and financing services while seeking sustainable solutions and engaging with stakeholders

Government Administration 🇨🇭 Zürich-Oerlikon 59 1990
54
Bank Zimmerbergbankzimmerberg.ch

With a tradition dating back to 1820, this Swiss universal bank offers a wide range of services for private and business clients with a focus on trust, personal values, and expertise

Banking 🇨🇭 Horgen 58 1820
55
bank zweiplus ltdbankzweiplus.ch

A Swiss bank providing banking services to financial advisors, asset managers, and direct clients with a focus on client protection and independent product range

Financial Services 🇨🇭 Zurich 55 2008
56
Swiss Life Groupswisslife.com

Leading provider of life, pensions, and financial solutions in Europe, supporting clients in preparing their financial future and managing risks

Insurance 🇨🇭 Zurich 54 1857
57
Affidea brustCare Brust-Zentrum Zürichbrust-zentrum.ch

Specialized in breast health, providing personalized care and comprehensive treatment for breast diseases with a team of specialists offering holistic support under one roof

Medical Practices 🇨🇭 Zurich 50 2002
58
Globalance Bank Ltd.globalance.com

Advises private clients on sustainable investments, showing impact on economy, society, environment through innovative digital tools.

Banking 🇨🇭 Zurich 44 2011
59
Bank BSU Genossenschaftbankbsu.ch

A Swiss regional bank with over 180 years of history, offering retail banking, investment services, mortgages, and support to small and medium-sized businesses

Banking 🇨🇭 Uster 41 1836
60
Saxo Switzerlandhome.saxo

A globally trusted platform offering access to financial instruments, tools, and managing over USD 100 billion in client assets for 1 million clients

Investment Banking 🇨🇭 Zurich 41 2008
61
Zürcher Landbank AGzlb.ch

A leading regional bank in Winterthur and surrounding areas, providing comprehensive banking services with a focus on customer satisfaction and strong community relationships

Banking 🇨🇭 Elgg 40 1851
62
Schroder & Co. Bank AG

Investment banking company located in Zurich, Switzerland, providing financial services and expertise to clients

Investment Banking 🇨🇭 Zurich 29 1967
63
Bank von Roll AGbankvonroll.ch

A financial institution located in Zurich, Switzerland, providing banking services such as loans, investments, and wealth management to clients

Banking 🇨🇭 Zurich 28 n/a
64
Solida Versicherungen AGsolida.ch

An insurance company based in Zurich, Switzerland, offering various insurance products and services

Insurance 🇨🇭 Zurich 28 1982
65
Mercantil Bank (Schweiz) AGmercantilsuiza.com

The company provides customized banking products and financial services in Wealth Management, Portfolio Management, and Advisory Services to meet individual needs

Investment Banking 🇨🇭 Zurich 24 1988
66
NPB Neue Privat Bank AGnpb-bank.ch

An independent Swiss private bank with a client centric strategy, providing trusted advice with respect, integrity, and diligence since 2001

Banking 🇨🇭 Zurich 23 2001
67
Leihkasse Stammheim AGleihkasse-stammheim.ch

A customer-oriented regional bank offering savings, financing, payment, investment, and retirement services with personalized advice and a strong focus on individual support

Banking 🇨🇭 Oberstammheim 16 1863
68
Air Prishtinaairprishtina.com

Leading provider of low cost, high quality air travel to Kosovo and Macedonia, offering scheduled flights within Europe and worldwide

Airlines and Aviation 🇨🇭 Zurich 15 1981
69
Industrial and Commercial Bank of China Limited, Beijing, Zurich Branchicbcswiss.com

A Beijing-based bank's Zurich branch offers banking services such as deposits, loans, trade finance, securities, FX trading, and RMB services

Banking 🇨🇭 Zurich 15 2017
70
Clientis Sparcassa 1816spc.clientis.ch

A banking company located in Zurich, Switzerland, specializing in financial services and operations for its member-owners

Banking 🇨🇭 Wädenswil 11 1816

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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 Oct 24, 2026.

More company lists in Canton of Zurich

The same list elsewhere in Switzerland