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List of critical infrastructure operators in Austria

Tamtam tracks 136 critical infrastructure operators headquartered in Austria. This list ranks the 100 largest by number of employees on LinkedIn, led by Vienna Insurance Group (VIG), Wiener Stadtwerke GmbH and A1 Telekom Austria Group. Their median headcount is 730. Half of them were founded in 1906 or later. The most common headquarters are Vienna (53) and Graz (5).

🇦🇹 Austria100 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Vienna Insurance Group (VIG)group.vig

Leading insurance group in Central and Eastern Europe with over 50 companies, serving 33 million customers and strong regional presence.

Insurance 🇦🇹 Vienna 18,276 n/a
2
Wiener Stadtwerke GmbHwienerstadtwerke.at

The company group in Vienna ensures reliable energy, mobility, and public services while actively pursuing a sustainable climate transition with innovative solutions

Utilities 🇦🇹 Vienna 15,000 n/a
3
A1 Telekom Austria Groupa1.group

Leading digital services and communications provider in Central and Eastern Europe, enabling connectivity, digital business, and lifestyle for over 24 million users.

Telecommunications 🇦🇹 Vienna 12,320 1887
4
UNIQA Insurance Groupuniqagroup.com

Insurance provider for private and corporate clients across Austria and Central and Eastern Europe, offering risk protection and community support.

Insurance 🇦🇹 Vienna 8,256 n/a
5
ÖBBholding.oebb.at

With 13 million daily passengers and 1,300 freight trains, ÖBB is a leading Austrian employer with over 42,000 employees and 2,000 apprentices

Rail Transportation 🇦🇹 Vienna 7,419 n/a
6
OMVomv.com

A leading sustainable fuels, chemicals, and materials company focusing on circular economy solutions, transitioning to low-carbon businesses to achieve net zero emissions by 2050

Utilities 🇦🇹 Vienna 6,877 1956
7
Erste Grouperstegroup.com

A leading financial institute in Central and Eastern Europe, providing banking services to millions of customers, promoting career growth and innovation

Banking 🇦🇹 Vienna 5,859 n/a
8
Raiffeisen Bank International AGrbinternational.com

A leading banking group in Austria and CEE, offering a variety of financial services through subsidiary banks and other providers to millions of customers

Banking 🇦🇹 Vienna 5,107 2010
9
Raiffeisen Bankengrupperaiffeisen.at

A leading banking group with regional central banks and independent branches, employing 24,700 people in 1,955 locations

Banking 🇦🇹 Vienna 4,377 n/a
10
City of Viennajobs.wien.gv.at

The Vienna City Administration is the largest employer in Vienna, providing social services, infrastructure, and essential utilities with a focus on employee development and equality

Executive Offices 🇦🇹 Vienna 4,260 n/a
11
A1 Telekom Austria AGjobs.a1.com

Provider of internet, voice, TV, and IT services in Austria, with a focus on sustainability and a range of digital solutions Part of a larger telecommunications group in Central and Eastern Europe

Telecommunications 🇦🇹 Vienna 4,226 1881
12
Gebrüder Weissgw-world.com

A leading European transport and logistics company with specialized industry solutions, subsidiaries, and a focus on sustainable business practices

Transportation, Logistics, Supply Chain and Storage 🇦🇹 Lauterach 3,356 1823
13
Austrian Airlinesaustrian.com

Leading Austrian airline operating worldwide routes from Vienna, focusing on high service quality, environmental responsibility, and exceptional passenger experience.

Airlines and Aviation 🇦🇹 Vienna 3,206 1957
14
Österreichische Post AGpost.at

An international post, logistics, and service conglomerate in Austria, with a wide reach in transportation, delivery services, e-commerce, and digital solutions

Transportation, Logistics, Supply Chain and Storage 🇦🇹 Vienna 3,080 n/a
15
Erste Bank und Sparkassesparkasse.at

A leading financial institute in Central and Eastern Europe, offering banking services, financing for families, support for entrepreneurs, and creating innovative products

Banking 🇦🇹 Vienna 2,970 n/a
16
UniCredit Bank Austria AGbankaustria.at

A leading Austrian bank within the UniCredit network, focused on empowering communities and unlocking potential across Europe with a common culture of integrity and ownership

Banking 🇦🇹 Vienna 2,684 n/a
17
Wiener Städtische Versicherungwienerstaedtische.at

A leading insurance company in Austria, part of VIENNA INSURANCE GROUP, offering reliable and innovative insurance products with a focus on customer satisfaction for over 190 years

Insurance 🇦🇹 Vienna 2,250 n/a
18
GRAWE | Grazer Wechselseitige Versicherung AGgrawe.at

Established in 1828, the company has evolved from a fire insurance provider to a diversified international company offering insurance, banking, and real estate services

Insurance 🇦🇹 Graz 2,067 1828
19
BAWAG Groupbawaggroup.com

Provides savings, payment, lending, leasing, investment, factoring, insurance products across multiple countries for retail and corporate customers.

Banking 🇦🇹 Vienna 1,979 1883
20
Wiener Linienwienerlinien.at

Providing climate-friendly public transportation services in Vienna, ensuring quality, innovation, and diverse roles for efficient urban mobility.

Urban Transit Services 🇦🇹 Vienna 1,973 n/a
21
EVNevn.at

A publicly traded energy and environmental services company in Lower Austria provides electricity, gas, heat, water, wastewater services, and waste management, also offering cable TV, telecom networks, and energy services

Utilities 🇦🇹 Maria Enzersdorf 1,935 1922
22
Österreichisches Rotes Kreuzroteskreuz.at

The organization provides humanitarian aid through services such as emergency response, blood donation, health, social services, disaster relief, and international cooperation

Non-profit Organizations 🇦🇹 Vienna 1,668 n/a
23
Addiko Bank AGaddiko.com

A consumer and SME specialist banking group in CSEE, offering unsecured personal loans, working capital loans, and payment services

Banking 🇦🇹 Vienna 1,634 n/a
24
Oberbankoberbank.at

Regional bank serving private customers and businesses with extensive branch network and international partnerships across Central Europe.

Banking 🇦🇹 1,594 1869
25
Health Agency of Lower Austrialandesgesundheitsagentur.at

A healthcare agency in Lower Austria with 27 clinic sites and 50 care centers, providing quality, compassionate care to residents of all ages

Hospitals and Health Care 🇦🇹 St. Pölten 1,576 n/a
26
Wien Energie GmbHwienenergie.at

Largest regional energy provider, supplying two million people with eco-friendly power, cooling, heating, electromobility, and telecommunications. Invests in renewables and electromobility.

Utilities 🇦🇹 Vienna 1,557 2001
27
Magenta Telekommagenta.at

Leading Austrian provider of internet, mobile, entertainment, and business solutions with advanced broadband and digital technologies for customers.

Telecommunications 🇦🇹 Vienna 1,338 1996
28
VERBUNDverbund.com

A leading European utility company focused on renewable energy, primarily hydroelectricity, with operations in electricity generation, transmission, trading, and sales

Utilities 🇦🇹 Vienna 1,336 1947
29
Wiener Gesundheitsverbundkarriere.gesundheitsverbund.at

A healthcare provider with 30,000 employees offering 24/7 care for patients and residents in Vienna, with 8 hospitals, 9 nursing homes, and a therapy center

Hospitals and Health Care 🇦🇹 Vienna 1,325 n/a
30
Tirol Kliniken GmbHkarriere.tirol-kliniken.at

A leading healthcare company in western Austria with three hospitals, training facilities, and over 9,000 employees, providing high-quality medical care to the population

Hospitals and Health Care 🇦🇹 1,322 1991
31
Rail Cargo Grouprailcargo.com

Leading European rail freight provider operating 448,000 trains annually, connecting 18 countries with efficient end-to-end logistics services.

Rail Transportation 🇦🇹 Vienna 1,312 1923
32
Raiffeisenraiffeisen.at

Cooperative banking group emphasizing community strength, mutual support, and collective power to achieve financial and social goals together.

Financial Services 🇦🇹 Vienna 1,263 1927
33
Volksbankvolksbank.at

A trusted bank in Austria serving entrepreneurs and individuals, focusing on trust, sustainability, and regional support for over 170 years

Banking 🇦🇹 Vienna 1,236 n/a
34
Pensionsversicherungpv.at

The largest pension insurance provider in Austria, with 6,500 employees serving 35 million insured individuals and paying out over 19 million pensions nationwide

Government Administration 🇦🇹 Vienna 1,211 1906
35
AUVA - Allgemeine Unfallversicherungsanstaltauva.at

This company provides social insurance for occupational risks, offering prevention, medical care, treatment, rehabilitation, compensation, and research for employees and students

Public Health 🇦🇹 Vienna 1,136 1889
36
Universitätsklinikum AKH Wienakhwien.at

The company is the largest hospital in Austria, treating around 60,000 inpatients and over 11 million outpatients annually with a diverse staff

Hospitals and Health Care 🇦🇹 Vienna 1,080 1693
37
KAGes – Steiermärkische Krankenanstaltengesellschaft m.b.H.kages.at

A nonprofit organization in Styria, Austria, providing high-quality medical care and support to over a million patients annually at 20 locations With over 18,000 employees, it is the largest employer in the region, offering diverse career opportunities

Hospitals and Health Care 🇦🇹 Graz 1,031 1985
38
Flughafen Wien - Vienna Airportviennaairport.com

Vienna Airport serves as a gateway to Central and Eastern Europe and the Middle East, offering extensive destinations and high service quality

Airlines and Aviation 🇦🇹 Wien-Schwechat 989 n/a
39
Drei Österreichdrei.at

A leading mobile provider in Austria, offering innovative digital solutions like fast broadband internet, mobile TV, and music services with extensive customer support

Telecommunications 🇦🇹 Vienna 946 2003
40
Raiffeisenlandesbank Oberösterreich AGraiffeisen.at

Leading Austrian regional bank offering tailored financial services to private, corporate, and institutional clients, focusing on customer orientation and international partnerships for growth

Banking 🇦🇹 Linz 938 1900
41
Österreichische Gesundheitskasseoegk.at

The largest social health insurance in Austria, providing equal access to healthcare for 76 million insured individuals through various services and a respectful work environment

Government Administration 🇦🇹 Vienna 935 2020
42
Wüstenrot Gruppewuestenrot.at

A leading financial services provider in Austria, offering tailored solutions for savings, financing, secure retirement, and asset protection Also operates in neighboring countries

Financial Services 🇦🇹 Salzburg 925 1925
43
Raiffeisenlandesbank Niederösterreich-Wien AGraiffeisen.at

A modern regional and commercial bank in Eastern Austria focused on building long-term customer relationships, following Raiffeisen's principles and supporting social causes and sustainability

Banking 🇦🇹 Vienna 895 1898
44
ASFINAGasfinag.at

The company is a reliable, innovative, and sustainable mobility partner in Austria, investing in eco-friendly solutions for generations to come They provide safe highways and digital services

Highway, Street, and Bridge Construction 🇦🇹 Vienna 892 1982
45
Salzburg AGsalzburg-ag.at

A Green Tech Company in Salzburg, offering digital solutions in energy, telecommunications, e-mobility, and photovoltaics, with a focus on sustainability and innovation

Utilities 🇦🇹 Salzburg 877 2000
46
Kepler Universitätsklinikum GmbHkepleruniklinikum.at

A leading university hospital in Austria with 6,700 employees, offering a wide range of medical services, specialized centers, and comprehensive training programs

Hospitals and Health Care 🇦🇹 Linz 833 2015
47
Iran Air ATiranair.at

Flag carrier of Iran offering direct flights between Vienna and Tehran since 1974 Book tickets online Follow on social media for updates

Airlines and Aviation 🇦🇹 Vienna 826 n/a
48
Oesterreichische Nationalbankoenb.at

The central bank of Austria within the Eurosystem, contributing to monetary policy, financial stability, cash supply, reserve asset management, economic analysis, and payment system oversight

Banking 🇦🇹 Vienna 775 1816
49
ENERTRAGenertrag.com

renewable energy production, operation, maintenance, planning, and construction of integrated power plants and energy systems with community focus

Utilities 🇦🇹 Dauerthal 749 n/a
50
Generali Austriagenerali.at

A leading insurance company with a focus on motor vehicle insurance, sustainable growth, international presence, innovation, employee trust, and continuous learning and development opportunities

Insurance 🇦🇹 Vienna 730 1832
51
Salzburger Landeskliniken - SALKsalk.at

This company in Austria is a medical practice that operates out of Salzburg, providing healthcare services to the community

Hospitals and Health Care 🇦🇹 Salzburg 715 1695
52
Fonds Soziales Wien (FSW)fsw.at

A social fund in Vienna with 2,500 employees and a budget of €225 billion, providing support to over 142,000 individuals annually They offer services for various needs

Individual and Family Services 🇦🇹 Vienna 700 2001
53
Steiermärkische Bank und Sparkassesteiermaerkische.at

International credit institution focused on digital innovation, with around 2,800 employees in Austria and the Western Balkan region, emphasizing customer-centricity and growth

Banking 🇦🇹 Graz 681 1825
54
illwerke vkwillwerkevkw.at

This company has been providing energy for Vorarlberg with a mix of groundedness and visionary ideas for over a century They are a reliable energy provider, sought-after employer, and community partner

Utilities 🇦🇹 Bregenz 660 n/a
55
KABEGkabeg.at

A major healthcare service provider in Carinthia, Austria, employing 8,000 staff across 5 locations, offering diverse career opportunities and job security

Hospitals and Health Care 🇦🇹 Klagenfurt am Wörthersee 641 n/a
56
LINZ AGlinzag.at

Management holding with four subsidiaries in energy sector, aiming to lower costs and secure profits through synergies, while evolving into a "Multi-Utility Provider"

Utilities 🇦🇹 Linz 633 2000
57
Wiener Netze GmbHwienernetze.at

A key infrastructure operator in Vienna, specializing in electricity, gas, district heating, and data services, leading the way towards a sustainable future

Utilities 🇦🇹 Vienna 625 n/a
58
APG Austrian Power Grid AGapg.at

The company is an independent electricity transmission system operator in Austria, responsible for integrating renewable energy and ensuring energy security at market prices

Utilities 🇦🇹 Vienna 624 n/a
59
DONAU Versicherung AG Vienna Insurance Groupdonauversicherung.at

An Austrian company with over 150 years of experience, providing insurance services to protect what matters most to people across the country

Insurance 🇦🇹 Vienna 622 n/a
60
OÖ Gesundheitsholding GmbHooeg.at

Leading healthcare provider in Upper Austria with hospitals, rehabilitation centers, and educational institutions, focused on providing excellent medical care and job opportunities in the region

Hospitals and Health Care 🇦🇹 Linz 620 2002
61
BKS BANKbks.at

A regional bank with international presence, offering a modern work environment, career development opportunities, and a focus on work-life balance and employee health

Banking 🇦🇹 Klagenfurt 613 1922
62
BTV Vier Länder Bankbtv.at

A successful bank based in Innsbruck, Austria, with branches in four countries, offering specialized investment services for individuals and comprehensive solutions for export-oriented businesses

Banking 🇦🇹 Innsbruck 611 n/a
63
Merkur Versicherungmerkur.at

Provider of personal insurance and cover for material and financial assets, specializing in health insurance, preventative healthcare, and expert advice on health-related issues

Insurance 🇦🇹 Graz 607 1798
64
Sparkasse Oberösterreichsparkasse-ooe.at

With a deep connection to the region for 175 years, this company provides financial solutions, listens to customers, and actively shapes a sustainable future

Banking 🇦🇹 Linz 597 1849
65
Energie AG OÖenergieag.at

Supplies electricity from renewable sources, natural gas, and heat while providing waste management, water supply, and wastewater services as a regional employer.

Utilities 🇦🇹 Linz 535 1892
66
Raiffeisen-Landesbank Steiermarkraiffeisen.at

The Raiffeisen-Landesbank Steiermark is a leading regional bank in southern Austria, offering digital banking and personal advisory services With a focus on expertise and innovation, they serve a wide range of clients

Banking 🇦🇹 Raaba 509 n/a
67
Raiffeisenverband Salzburgraiffeisen.at

The company is the central office of a banking group in Salzburg, providing banking services, IT infrastructure, and marketing support to local Raiffeisen banks

Banking 🇦🇹 Salzburg 434 1905
68
Hypo Tirol Bank AGhypotirol.com

Specializing in supporting small and medium-sized businesses, institutions, individuals, and freelancers in Tyrol to achieve their goals and dreams with a focus on long-term success

Banking 🇦🇹 Innsbruck 394 1901
69
GRAWE Bankengruppegrawe-bankengruppe.at

The company is a longstanding financial institution offering a wide range of services such as financing, savings, private banking, wealth management, trading, fund management, and real estate

Financial Services 🇦🇹 Graz 383 n/a
70
Saubermacher Dienstleistungs AGsaubermacher.at

An international waste management and recycling organization focused on achieving zero waste through innovation, digitalization, research, and sustainability

Environmental Services 🇦🇹 Feldkirchen b. Graz 379 1979
71
Hypo Vorarlberghypovbg.at

A forward-thinking bank in Vorarlberg, offering personalized financial solutions with a focus on stability, sustainability, and strong relationships

Banking 🇦🇹 Bregenz 378 1897
72
Helvetia Insurance Austriahelvetia.com

Offering top Swiss quality individual insurance policies in Austria for over 160 years to meet customer demands

Insurance 🇦🇹 Vienna 365 1858
73
Oesterreichische Kontrollbank AGoekb.at

As a central financial services provider, supports the Austrian economy with diverse services. Provides essential financial infrastructure and expertise for businesses.

Banking 🇦🇹 Vienna 354 1946
74
HYPO NOE Landesbank für Niederösterreich und Wien AGhyponoe.at

A leading and long-standing Austrian regional bank prioritizing proximity to customers, sustainability, and responsibility for future generations #landesbank #regional #sustainability

Banking 🇦🇹 St. Pölten 354 n/a
75
Allianz Österreichallianz.at

A leading financial service provider in Austria offering insurance, retirement planning, and wealth management solutions to over 115 million customers since 1860

Insurance 🇦🇹 Vienna 347 1860
76
Kommunalkreditkommunalkredit.at

Financing essential European infrastructure projects in energy, environment, transport, digitalization, social infrastructure, and natural resources with tailored solutions.

Banking 🇦🇹 Vienna 291 1959
77
Sozialversicherung der Selbständigensvs.at

The SVS provides social security, health and pension benefits, and digital services for self-employed individuals in Austria through a self-managed organization

Insurance 🇦🇹 Vienna 278 n/a
78
Raiffeisen Vorarlbergraiffeisen.at

A leading banking group in Vorarlberg, Austria, providing financial services and supporting local communities through a diverse range of career opportunities

Banking 🇦🇹 Bregenz 262 n/a
79
GARTNER - "THE WORLD OF TRANSPORT"gartnerkg.com

Leading European transport company specializing in road freight, intermodal rail services, and customized logistics solutions across multiple countries.

Truck Transportation 🇦🇹 Lambach 258 1918
80
AVEave.at

A leading group in waste management offering collection, logistics, processing, recycling, and disposal services with a focus on quality and safety

Environmental Services 🇦🇹 A-4063 Hörsching 254 1991
81
Gutmanngutmann.at

A leading private banking and asset management firm in Austria, providing tailored investment advice, fund solutions, and managing a substantial investment fund volume

Banking 🇦🇹 Vienna 242 1922
82
R V Allgemeine Versicherung AGruv.at

Insurance company offering a variety of insurance products, located in Wien, Germany

Insurance 🇦🇹 Vienna 238 n/a
83
Oberösterreichische Versicherung AGversich.at

A leading insurance company in Austria, with over 200 years of history, providing security and protection to clients in Oberösterreich and beyond

Insurance 🇦🇹 Linz 217 1811
84
Raiffeisen-Landesbank Tirol AGraiffeisen.at

As a top institute of the Tyrolean Raiffeisen banks, the company values safety, proximity, and trust, providing financial services with regional responsibility

Banking 🇦🇹 Innsbruck 214 1895
85
Bank Burgenlandbank-burgenland.at

A top banking institution within the GRAWE Banking Group, specializing in professional financial services, including tailored financing solutions for businesses and individuals

Banking 🇦🇹 Eisenstadt 199 n/a
86
Bankhaus Spänglerspaengler.at

An independent private bank providing comprehensive wealth management services to high-net-worth individuals, family businesses, and foundations with a focus on family banking

Banking 🇦🇹 Salzburg 165 1828
87
FCC Environment CEEfcc-group.eu

Provides waste collection, treatment, recycling, and recovery services across Central and Eastern Europe to promote sustainable urban living.

Environmental Services 🇦🇹 Vienna 163 1988
88
TIROLER VERSICHERUNG V.a.G.tiroler-versicherung.at

A traditional mutual insurance company in Tirol, providing reliable insurance protection, emphasizing loss prevention, supporting members, and investing profits in the local economy

Insurance 🇦🇹 Innsbruck 154 1821
89
PSA Payment Services Austria GmbHpsa.at

Management of ATM network, processing account transfers, providing card and identity products, and developing innovative payment solutions for banks.

Financial Services 🇦🇹 Vienna 149 2012
90
Dornbirner Sparkasse Bank AGsparkasse.at

A leading financial institution in Vorarlberg and Austria, offering modern banking services, strong local presence, and a focus on customer satisfaction and employee well-being

Banking 🇦🇹 Dornbirn 136 1867
91
Raiffeisenlandesbank Burgenland und Revisionsverband eGenraiffeisen.at

A leading cooperative bank group in Burgenland, Austria with a strong presence in Europe, offering a comprehensive range of financial services through local branches and online banking

Banking 🇦🇹 Eisenstadt 134 n/a
92
Anadi Bankanadibank.com

A multi-channel bank in Austria offering retail, digital, corporate, and public finance services, transitioning to a pure digital bank with innovative digital solutions

Banking 🇦🇹 Klagenfurt 133 1896
93
MLP Banking AGmlp.de

MLP is a financial advisory company offering services such as retirement planning, asset management, insurance, financing, and banking transactions

Financial Services 🇦🇹 Wiesloch 123 n/a
94
Sparkasse Schwazsparkasse.at

A modern and innovative universal bank providing financial planning and support for individuals and businesses, leading the region with strong customer service and expertise

Banking 🇦🇹 Schwaz 103 1872
95
VBV-Gruppevbv.at

Market leader in corporate pension solutions in Austria, managing over 11 billion euros for 37 million beneficiaries, known for quality, innovation, and sustainability

Financial Services 🇦🇹 Vienna 98 n/a
96
SVC designing e-healthsvc.co.at

The company focuses on developing and implementing IT projects in the Austrian healthcare system, including e-card, ELGA, e-Medication, and social insurance internet portals

Software Development 🇦🇹 Vienna 96 n/a
97
Intermarket Bank AG - Factoring, Supply Chain Finance und Liquidityintermarket.at

An Austrian factoring bank offering receivables financing services, part of Erste Group Bank AG, providing international solutions for businesses in Austria and the CEE region

Banking 🇦🇹 Vienna 95 1971
98
Raiffeisen Regionalbank Mödlingraiffeisen.at

A modern and innovative banking institution with traditional values, focusing on customer needs with 18 locations and 200 employees

Banking 🇦🇹 Mödling 94 n/a
99
LEVEL Europeflylevel.com

An Austrian-Dutch airline subsidiary of IAG, serving 22 European destinations with low-cost, reliable flights using Airbus A320 aircraft Videos/photos on social media

Airlines/Aviation 🇦🇹 Schwechat 91 n/a
100
Sparkasse der Stadt Feldkirchsparkasse.at

A well-established company with over 200 employees across 15 locations, focusing on customer financial management and offering secure job opportunities with career advancement prospects

Banking 🇦🇹 Feldkirch 88 1842

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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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