These major Austrian corporate groups operate in diverse sectors. Wiener Stadtwerke GmbH provides energy, mobility, and public services, while A1 Telekom Austria Group offers digital services and connectivity. OMV focuses on sustainable fuels and chemicals, and Mondi Group specializes in packaging. UNIQA Insurance Group provides insurance across Central and Eastern Europe. A significant number of these large companies, including Wiener Stadtwerke, A1 Telekom Austria Group, OMV, and UNIQA Insurance Group, have their headquarters in Vienna. This indicates a concentration of major corporate activity within the capital city.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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 |
15,000 | |||
| 2 |
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. |
12,320 | |||
| 3 |
BENTELER Groupbenteler.com
Development and production of safety-related automotive components, steel tubes, and systems for energy and mechanical engineering sectors worldwide. |
9,318 | |||
| 4 |
Mondi Grouplinktr.ee
Global integrated company managing forests, producing pulp, paper, plastic films, and manufacturing sustainable industrial and consumer packaging solutions. |
9,160 | |||
| 5 |
UNIQA Insurance Groupuniqagroup.com
Insurance provider for private and corporate clients across Austria and Central and Eastern Europe, offering risk protection and community support. |
8,256 | |||
| 6 |
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 |
7,419 | |||
| 7 | 6,877 | ||||
| 8 |
PORR Groupporr-group.com
Large European construction company specializing in building, civil engineering, and infrastructure services across multiple countries and international markets. |
6,454 | |||
| 9 |
Froniusfronius.com
Manufacturing battery charging systems, welding technology, and solar electronics for various industrial and residential applications. Providing advanced power solutions. |
5,001 | |||
| 10 |
DO & CO AGdoco.com
An Austrian company offering gourmet entertainment worldwide through Airline Catering, Event Catering, and Restaurants, dedicated to delivering exceptional quality and service |
4,937 | |||
| 11 |
Umdasch Groupumdaschgroup.com
An innovation hub within a multinational group, focused on groundbreaking technologies and new business models in construction and retail |
3,439 | |||
| 12 |
Greinergreiner.com
A global supplier of plastics and foam solutions with diverse divisions in packaging, medical technology, and more, boasting 11,000+ employees worldwide |
2,876 | |||
| 13 |
Blum Groupblum.com
Manufacturing furniture fittings including lift systems, hinges, drawers, and pocket systems for global customers, with plants and production sites worldwide |
2,791 | |||
| 14 | 2,733 | ||||
| 15 |
GoStudentgostudent.org
Leading hybrid tutoring company combining online and offline education services to support millions of families and unlock children's potential. |
2,718 | |||
| 16 |
REWE International AGrewe-group.jobs
Operates multiple retail brands providing high-quality food and drugstore products across Austria and eight other European countries. |
2,715 | |||
| 17 |
ENGELengelglobal.com
Global leader in injection moulding machines and automation, producing plastic parts for various industries worldwide, with a focus on innovation and customer benefit |
2,700 | |||
| 18 |
Frequentisfrequentis.com
An international supplier of communication and information systems for control centers with safety-critical tasks in air traffic management and public safety & transport sectors |
2,573 | |||
| 19 |
SWARCOswarco.com
A traffic technology corporation that improves travel safety and efficiency through products, systems, and solutions for road management, parking, and public transport |
2,290 | |||
| 20 |
Johannes Kepler Universität Linzjku.at
The university in Linz offers modern academic programs in social science, economics, law, engineering, and medicine with a focus on research and international partnerships |
2,223 | |||
| 21 |
ams AGams-osram.com
Global leader in intelligent sensors, illumination, and visualization technologies enhancing safety, simplicity, and efficiency in everyday life. |
2,221 | |||
| 22 |
WALTER GROUPcareer.walter-group.com
European company specializing in full truck load transport, container leasing, real estate investment, and vehicle leasing services across Europe. |
2,216 | |||
| 23 |
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 |
2,067 | |||
| 24 |
NOVOMATICnovomatic.com
International gaming technology producer and operator with a diverse product portfolio, spanning land-based gaming, online/mobile solutions, lottery, sports betting, and ancillary services |
1,977 | |||
| 25 | 1,935 | ||||
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. | |||||
| 26 |
KLINGER Holdingklinger-international.com
Global leader in industrial sealings, fluid control, and fluid monitoring systems, providing high-quality gaskets and valves for various industries worldwide |
1,770 | |||
| 27 |
voestalpinevoestalpine.com
Global steel and technology group offering premium products and solutions for automotive, consumer goods, aerospace, oil & gas, and railway industries Committed to decarbonizing steel production |
1,753 | |||
| 28 |
Kapsch Groupkapsch.net
Global technology corporation with a focus on innovation and customer satisfaction, investing in research and development to bring new solutions to market |
1,743 | |||
| 29 |
Rosenbauer Grouprosenbauer.com
provider of fire protection vehicles, digital applications, personal and technical equipment for emergency and disaster control worldwide |
1,697 | |||
| 30 |
Addiko Bank AGaddiko.com
A consumer and SME specialist banking group in CSEE, offering unsecured personal loans, working capital loans, and payment services |
1,634 | |||
| 31 |
Zumtobel Groupz.lighting
An international lighting group with innovative solutions and components, focusing on sustainability and cultural diversity, impacting people, nature, and innovation worldwide |
1,619 | |||
| 32 |
Prinzhorn Groupprinzhorngroup.com
European market leader in packaging, paper, and recycling industry with 10,000 employees across 16 countries, specializing in corrugated packaging, containerboard production, and recycling |
1,575 | |||
| 33 |
Kapsch TrafficCom AGkapsch.net
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. |
1,345 | |||
| 34 |
VERBUNDverbund.com
A leading European utility company focused on renewable energy, primarily hydroelectricity, with operations in electricity generation, transmission, trading, and sales |
1,336 | |||
| 35 | 1,221 | ||||
| 36 |
S&T AG | S&T Groupkontron.com
A growing IoT technology group offering smart solutions for industries worldwide, helping businesses with digital transformation through innovative technologies |
1,216 | |||
| 37 |
Anton Paaranton-paar.com
A global high-tech company specializing in laboratory instruments, process measurement technology, automation solutions, and high-precision parts production for various industries worldwide |
1,211 | |||
| 38 |
Red Bull Media Houseredbullmediahouse.com
A globally distributed media company inspiring with sports, culture, and lifestyle content through TV, mobile, digital, and live events |
1,101 | |||
| 39 |
CANCOM Austriacancom.at
Leading ICT service provider & digitalization partner in Austria with expertise in collaboration, networking, and IT technology Offers software solutions and smart workplace services |
1,084 | |||
| 40 |
SEMPERIT AGsemperitgroup.com
Development, production, and marketing of specialized polymer and plastic products including hoses, conveyor belts, and construction profiles worldwide. |
1,073 | |||
| 41 |
Greiner Packaginggreiner-gpi.com
Development, production, and trading of packaging, plastics, and machinery, alongside management and administration of associated companies. |
1,050 | |||
| 42 |
Constantia Industries AGciag.at
An industrial holding company active in construction, furniture, sports goods, aviation, and energy management, aiming to expand into new B2B sectors |
1,020 | |||
| 43 |
FMTG | Falkensteiner Michaeler Tourism Groupfalkensteiner.com
Hospitality group offering diverse jobs, training, and career advancement opportunities Focus on creating a welcoming environment for guests and employees |
976 | |||
| 44 |
PKEpke-group.com
A trailblazing European company specializing in security, communication, media, engineering, and facility management with a track record of outstanding results on large-scale projects |
961 | |||
| 45 |
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 |
938 | |||
| 46 |
dm drogerie markt Österreichdm-jobs.at
Leading drogerie retailer in Central and Eastern Europe, offering a wide range of beauty, health, baby, and household products, along with services like hair and beauty studios |
911 | |||
| 47 |
KEBA Groupkeba.com
An international company founded in 1968, specializing in Industrial Automation, Banking and Service Automation, and Energy Automation, with a focus on technological innovations and quality standards |
854 | |||
| 48 |
TTTECHtttech.com
Provides safe, secure, networked computing platforms for industries like aviation, space, manufacturing, and energy, enabling autonomous systems through continuous innovation. |
825 | |||
| 49 | 814 | ||||
| 50 |
WITTMANN Groupwittmann-group.com
Manufacturing injection molding machines, robots, and auxiliary equipment for plastic processing, specializing in energy-efficient technology and material handling for smart factory production cells. |
805 | |||
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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.
More company lists in Austria
- The largest companies in Austria 1,412
- Multinational companies in Austria 578
- Companies with in-house R&D in Austria 259
- Manufacturers in Austria 249
- Critical infrastructure operators in Austria 166
- Retail chains in Austria 159
- Hardware manufacturers in Austria 150
- Financial services firms in Austria 146
- Family-owned companies in Austria 119
- Companies with a mobile app in Austria 114
- Software Development companies in Austria 103
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- SaaS companies in Austria 90
- Public sector organisations in Austria 88
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- Banking companies in Austria 79
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- Publicly traded companies in Austria 58
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- Consulting firms in Austria 48
- Machinery Manufacturing companies in Austria 47
- Research institutes in Austria 45