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The 51 largest critical infrastructure operators in Zurich

Tamtam tracks 51 critical infrastructure operators headquartered in 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 678. Half of them were founded in 1970 or later.

🇨🇭 Zurich51 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
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
5
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
6
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
7
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
8
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
9
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
10
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
11
EFG Internationalefginternational.com

Global private banking group offering asset management services, headquartered in Zurich with a presence in major financial centers worldwide Entrepreneurial thinking Private banking

Banking 🇨🇭 Zurich 2,000 1995
12
Habib Bank AG Zurichhabibbank.com

Provides commercial, corporate, and personal banking services globally, specializing in trade finance, Islamic banking, and wealth management across 11 countries.

Banking 🇨🇭 Zurich 1,940 1967
13
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
14
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
15
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
16
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
17
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
18
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
19
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
20
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
21
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
22
Sanitas Krankenversicherungsanitas.com

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

Insurance 🇨🇭 Zurich 766 1958
23
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
24
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
25
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
26
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
27
Worldline Switzerlandworldline.com

An innovative company providing advanced payments technology and tailored solutions to help businesses grow quickly, simply, and securely globally

Financial Services 🇨🇭 Zurich 546 n/a
28
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
29
BNP Paribas in Switzerlandbnpparibas.ch

A leading European bank in Switzerland offering corporate, institutional, and private client services, specializing in wealth management and financial stability

Banking 🇨🇭 Zurich 442 1872
30
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
31
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
32
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
33
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
34
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
35
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
36
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
37
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
38
radicantradicant.com

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

Financial Services 🇨🇭 Zurich 60 2021
39
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
40
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
41
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
42
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
43
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
44
Helvetische Bank AGhelvetischebank.ch

Provides wealth management, corporate finance, and research services to entrepreneurs, qualified private investors, and external asset managers, prioritizing Swiss banking values and innovative financial solutions.

Banking 🇨🇭 Zurich 36 2011
45
Schroder & Co. Bank AG

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

Investment Banking 🇨🇭 Zurich 29 1967
46
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
47
Solida Versicherungen AGsolida.ch

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

Insurance 🇨🇭 Zurich 28 1982
48
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
49
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
50
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
51
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

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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.

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