# 50 leading corporate groups and holding companies in Austria

Tamtam tracks 134 corporate groups and holding companies headquartered in Austria. This list ranks the 50 largest by number of employees on LinkedIn, led by Wiener Stadtwerke GmbH, A1 Telekom Austria Group and BENTELER Group. Their median headcount is 1,935. Half of them were founded in 1956 or later. The most common headquarters are Vienna (22), Linz (4) and Graz (2).

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.

🇦🇹 Austria · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Wiener Stadtwerke GmbH](https://www.tamtam.ai/c/wiener-stadtwerke-gmbh) (wienerstadtwerke.at)<br>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 |  |
| 2 | [A1 Telekom Austria Group](https://www.tamtam.ai/c/a1-telekom-austria-group) (a1.group)<br>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 |
| 3 | [BENTELER Group](https://www.tamtam.ai/c/benteler-group) (benteler.com)<br>Development and production of safety-related automotive components, steel tubes, and systems for energy and mechanical engineering sectors worldwide. | Motor Vehicle Manufacturing | 🇦🇹 Salzburg | 9,318 | 1876 |
| 4 | [Mondi Group](https://www.tamtam.ai/c/mondi-group) (linktr.ee)<br>Global integrated company managing forests, producing pulp, paper, plastic films, and manufacturing sustainable industrial and consumer packaging solutions. | Packaging and Containers Manufacturing | 🇦🇹 Vienna | 9,160 |  |
| 5 | [UNIQA Insurance Group](https://www.tamtam.ai/c/uniqa-insurance-group) (uniqagroup.com)<br>Insurance provider for private and corporate clients across Austria and Central and Eastern Europe, offering risk protection and community support. | Insurance | 🇦🇹 Vienna | 8,256 |  |
| 6 | [ÖBB](https://www.tamtam.ai/c/obb) (holding.oebb.at)<br>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 |  |
| 7 | [OMV](https://www.tamtam.ai/c/omv) (omv.com)<br>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 |
| 8 | [PORR Group](https://www.tamtam.ai/c/porr-group) (porr-group.com)<br>Large European construction company specializing in building, civil engineering, and infrastructure services across multiple countries and international markets. | Construction | 🇦🇹 Vienna | 6,454 |  |
| 9 | [Fronius](https://www.tamtam.ai/c/fronius-osterreich) (fronius.com)<br>Manufacturing battery charging systems, welding technology, and solar electronics for various industrial and residential applications. Providing advanced power solutions. | Appliances, Electrical, and Electronics Manufacturing | 🇦🇹 Wels | 5,001 | 1945 |
| 10 | [DO & CO AG](https://www.tamtam.ai/c/do-and-co-ag) (doco.com)<br>An Austrian company offering gourmet entertainment worldwide through Airline Catering, Event Catering, and Restaurants, dedicated to delivering exceptional quality and service | Hospitality | 🇦🇹 Vienna | 4,937 | 1981 |
| 11 | [Umdasch Group](https://www.tamtam.ai/c/umdasch-group) (umdaschgroup.com)<br>An innovation hub within a multinational group, focused on groundbreaking technologies and new business models in construction and retail | Construction | 🇦🇹 Amstetten | 3,439 | 2016 |
| 12 | [Greiner](https://www.tamtam.ai/c/greiner) (greiner.com)<br>A global supplier of plastics and foam solutions with diverse divisions in packaging, medical technology, and more, boasting 11,000+ employees worldwide | Plastics Manufacturing | 🇦🇹 Kremsmünster | 2,876 | 1868 |
| 13 | [Blum Group](https://www.tamtam.ai/c/blum-group) (blum.com)<br>Manufacturing furniture fittings including lift systems, hinges, drawers, and pocket systems for global customers, with plants and production sites worldwide | Furniture and Home Furnishings Manufacturing | 🇦🇹 Höchst | 2,791 |  |
| 14 | [BWT Group](https://www.tamtam.ai/c/bwt-group) (bwt.com)<br>European leader in water technology, providing innovative treatment systems and services for various industries, focusing on safety, hygiene, health, and sustainability | Holding Companies | 🇦🇹 Mondsee | 2,733 |  |
| 15 | [GoStudent](https://www.tamtam.ai/c/gostudent) (gostudent.org)<br>Leading hybrid tutoring company combining online and offline education services to support millions of families and unlock children's potential. | Education Administration Programs | 🇦🇹 Vienna | 2,718 | 2016 |
| 16 | [REWE International AG](https://www.tamtam.ai/c/rewe-international-ag) (rewe-group.jobs)<br>Operates multiple retail brands providing high-quality food and drugstore products across Austria and eight other European countries. | Retail | 🇦🇹 Wiener Neudorf | 2,715 |  |
| 17 | [ENGEL](https://www.tamtam.ai/c/engel) (engelglobal.com)<br>Global leader in injection moulding machines and automation, producing plastic parts for various industries worldwide, with a focus on innovation and customer benefit | Machinery Manufacturing | 🇦🇹 Schwertberg | 2,700 | 1945 |
| 18 | [Frequentis](https://www.tamtam.ai/c/frequentis) (frequentis.com)<br>An international supplier of communication and information systems for control centers with safety-critical tasks in air traffic management and public safety & transport sectors | IT Services and IT Consulting | 🇦🇹 Vienna | 2,573 |  |
| 19 | [SWARCO](https://www.tamtam.ai/c/swarco) (swarco.com)<br>A traffic technology corporation that improves travel safety and efficiency through products, systems, and solutions for road management, parking, and public transport | Paint, Coating, and Adhesive Manufacturing | 🇦🇹 Wattens | 2,290 | 1969 |
| 20 | [Johannes Kepler Universität Linz](https://www.tamtam.ai/c/johannes-kepler-universitat-linz) (jku.at)<br>The university in Linz offers modern academic programs in social science, economics, law, engineering, and medicine with a focus on research and international partnerships | Higher Education | 🇦🇹 Linz | 2,223 | 1966 |
| 21 | [ams AG](https://www.tamtam.ai/c/ams-ag) (ams-osram.com)<br>Global leader in intelligent sensors, illumination, and visualization technologies enhancing safety, simplicity, and efficiency in everyday life. | Semiconductor Manufacturing | 🇦🇹 Premstätten | 2,221 | 1981 |
| 22 | [WALTER GROUP](https://www.tamtam.ai/c/walter-group) (career.walter-group.com)<br>European company specializing in full truck load transport, container leasing, real estate investment, and vehicle leasing services across Europe. | Holding Companies | 🇦🇹 Wiener Neudorf | 2,216 | 1924 |
| 23 | [GRAWE \| Grazer Wechselseitige Versicherung AG](https://www.tamtam.ai/c/grawe-grazer-wechselseitige-versicherung-ag) (grawe.at)<br>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 |
| 24 | [NOVOMATIC](https://www.tamtam.ai/c/novomatic) (novomatic.com)<br>International gaming technology producer and operator with a diverse product portfolio, spanning land-based gaming, online/mobile solutions, lottery, sports betting, and ancillary services | Gambling Facilities and Casinos | 🇦🇹 Gumpoldskirchen | 1,977 | 1980 |
| 25 | [EVN](https://www.tamtam.ai/c/evn) (evn.at)<br>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 |
| 26 | [KLINGER Holding](https://www.tamtam.ai/c/klinger-holding) (klinger-international.com)<br>Global leader in industrial sealings, fluid control, and fluid monitoring systems, providing high-quality gaskets and valves for various industries worldwide | Industrial Machinery Manufacturing | 🇦🇹 Gumpoldskirchen | 1,770 | 1886 |
| 27 | [voestalpine](https://www.tamtam.ai/c/voestalpine) (voestalpine.com)<br>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 | Mining | 🇦🇹 Linz | 1,753 |  |
| 28 | [Kapsch Group](https://www.tamtam.ai/c/kapsch-group) (kapsch.net)<br>Global technology corporation with a focus on innovation and customer satisfaction, investing in research and development to bring new solutions to market | IT Services and IT Consulting | 🇦🇹 Vienna | 1,743 |  |
| 29 | [Rosenbauer Group](https://www.tamtam.ai/c/rosenbauer-group) (rosenbauer.com)<br>provider of fire protection vehicles, digital applications, personal and technical equipment for emergency and disaster control worldwide | Motor Vehicle Manufacturing | 🇦🇹 Leonding | 1,697 | 1866 |
| 30 | [Addiko Bank AG](https://www.tamtam.ai/c/addiko-bank-ag) (addiko.com)<br>A consumer and SME specialist banking group in CSEE, offering unsecured personal loans, working capital loans, and payment services | Banking | 🇦🇹 Vienna | 1,634 |  |
| 31 | [Zumtobel Group](https://www.tamtam.ai/c/zumtobel-group) (z.lighting)<br>An international lighting group with innovative solutions and components, focusing on sustainability and cultural diversity, impacting people, nature, and innovation worldwide | Appliances, Electrical, and Electronics Manufacturing | 🇦🇹 Dornbirn | 1,619 | 1950 |
| 32 | [Prinzhorn Group](https://www.tamtam.ai/c/prinzhorn-group) (prinzhorngroup.com)<br>European market leader in packaging, paper, and recycling industry with 10,000 employees across 16 countries, specializing in corrugated packaging, containerboard production, and recycling | Packaging and Containers Manufacturing | 🇦🇹 Vienna | 1,575 | 1853 |
| 33 | [Kapsch TrafficCom AG](https://www.tamtam.ai/c/kapsch-trafficcom-ag) (kapsch.net)<br>Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. | IT Services and IT Consulting | 🇦🇹 Vienna | 1,345 | 2002 |
| 34 | [VERBUND](https://www.tamtam.ai/c/verbund) (verbund.com)<br>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 |
| 35 | [FACC AG](https://www.tamtam.ai/c/facc-ag) (facc.com)<br>Global aerospace leader specializing in design, development, and production of advanced lightweight systems with technology on board every other aircraft taking off worldwide | Aviation and Aerospace Component Manufacturing | 🇦🇹 Ried im Innkreis | 1,221 | 1989 |
| 36 | [S&T AG \| S&T Group](https://www.tamtam.ai/c/s-and-t-ag-s-and-t-group) (kontron.com)<br>A growing IoT technology group offering smart solutions for industries worldwide, helping businesses with digital transformation through innovative technologies | Automation Machinery Manufacturing | 🇦🇹 A-4020 Linz | 1,216 |  |
| 37 | [Anton Paar](https://www.tamtam.ai/c/anton-paar) (anton-paar.com)<br>A global high-tech company specializing in laboratory instruments, process measurement technology, automation solutions, and high-precision parts production for various industries worldwide | Measuring and Control Instrument Manufacturing | 🇦🇹 Graz | 1,211 | 1922 |
| 38 | [Red Bull Media House](https://www.tamtam.ai/c/red-bull-media-house) (redbullmediahouse.com)<br>A globally distributed media company inspiring with sports, culture, and lifestyle content through TV, mobile, digital, and live events | Media Production | 🇦🇹 Salzburg | 1,101 | 2007 |
| 39 | [CANCOM Austria](https://www.tamtam.ai/c/cancom-austria) (cancom.at)<br>Leading ICT service provider & digitalization partner in Austria with expertise in collaboration, networking, and IT technology Offers software solutions and smart workplace services | IT Services and IT Consulting | 🇦🇹 Vienna | 1,084 |  |
| 40 | [SEMPERIT AG](https://www.tamtam.ai/c/semperit-ag) (semperitgroup.com)<br>Development, production, and marketing of specialized polymer and plastic products including hoses, conveyor belts, and construction profiles worldwide. | Chemical Manufacturing | 🇦🇹 Vienna | 1,073 | 1824 |
| 41 | [Greiner Packaging](https://www.tamtam.ai/c/greiner-packaging) (greiner-gpi.com)<br>Development, production, and trading of packaging, plastics, and machinery, alongside management and administration of associated companies. | Packaging and Containers Manufacturing | 🇦🇹 Sattledt | 1,050 |  |
| 42 | [Constantia Industries AG](https://www.tamtam.ai/c/constantia-industries-ag) (ciag.at)<br>An industrial holding company active in construction, furniture, sports goods, aviation, and energy management, aiming to expand into new B2B sectors | Plastics Manufacturing | 🇦🇹 Vienna | 1,020 | 1949 |
| 43 | [FMTG \| Falkensteiner Michaeler Tourism Group](https://www.tamtam.ai/c/fmtg-falkensteiner-michaeler-tourism-group) (falkensteiner.com)<br>Hospitality group offering diverse jobs, training, and career advancement opportunities Focus on creating a welcoming environment for guests and employees | Hospitality | 🇦🇹 Vienna | 976 | 1957 |
| 44 | [PKE](https://www.tamtam.ai/c/pke) (pke-group.com)<br>A trailblazing European company specializing in security, communication, media, engineering, and facility management with a track record of outstanding results on large-scale projects | Holding Companies | 🇦🇹 Vienna | 961 | 1979 |
| 45 | [Raiffeisenlandesbank Oberösterreich AG](https://www.tamtam.ai/c/raiffeisenlandesbank-oberosterreich-ag) (raiffeisen.at)<br>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 |
| 46 | [dm drogerie markt Österreich](https://www.tamtam.ai/c/dm-drogerie-markt-osterreich) (dm-jobs.at)<br>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 | Retail | 🇦🇹 Wals | 911 | 1976 |
| 47 | [KEBA Group](https://www.tamtam.ai/c/keba-group) (keba.com)<br>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 | Automation Machinery Manufacturing | 🇦🇹 Linz | 854 | 1968 |
| 48 | [TTTECH](https://www.tamtam.ai/c/tttech) (tttech.com)<br>Provides safe, secure, networked computing platforms for industries like aviation, space, manufacturing, and energy, enabling autonomous systems through continuous innovation. | Computer Networking Products | 🇦🇹 Vienna | 825 |  |
| 49 | [VTU Group](https://www.tamtam.ai/c/vtu-group) (vtu.com)<br>A group of engineers and consultants specializing in industrial process plants, offering services from design to start-up, with expertise in GMP services | Design Services | 🇦🇹 Grambach / Graz | 814 | 1990 |
| 50 | [WITTMANN Group](https://www.tamtam.ai/c/wittmann-group) (wittmann-group.com)<br>Manufacturing injection molding machines, robots, and auxiliary equipment for plastic processing, specializing in energy-efficient technology and material handling for smart factory production cells. | Machinery Manufacturing | 🇦🇹 Vienna | 805 | 1976 |

## 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](https://www.tamtam.ai/l/largest-companies-austria) (1,412)
- [Multinational companies in Austria](https://www.tamtam.ai/l/multinational-companies-austria) (578)
- [Companies with in-house R&D in Austria](https://www.tamtam.ai/l/r-and-d-companies-austria) (259)
- [Manufacturers in Austria](https://www.tamtam.ai/l/manufacturers-austria) (249)
- [Critical infrastructure operators in Austria](https://www.tamtam.ai/l/critical-infrastructure-operators-austria) (166)
- [Retail chains in Austria](https://www.tamtam.ai/l/retail-chains-austria) (159)
- [Hardware manufacturers in Austria](https://www.tamtam.ai/l/hardware-companies-austria) (150)
- [Financial services firms in Austria](https://www.tamtam.ai/l/financial-services-firms-austria) (146)
- [Family-owned companies in Austria](https://www.tamtam.ai/l/family-owned-companies-austria) (119)
- [Companies with a mobile app in Austria](https://www.tamtam.ai/l/companies-with-mobile-app-austria) (114)
- [Software Development companies in Austria](https://www.tamtam.ai/l/software-development-companies-austria) (103)
- [IT Services and IT Consulting companies in Austria](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-austria) (101)
- [SaaS companies in Austria](https://www.tamtam.ai/l/saas-companies-austria) (90)
- [Public sector organisations in Austria](https://www.tamtam.ai/l/public-sector-organisations-austria) (88)
- [Education providers in Austria](https://www.tamtam.ai/l/education-companies-austria) (81)
- [Banking companies in Austria](https://www.tamtam.ai/l/banking-companies-austria) (79)
- [IT services companies in Austria](https://www.tamtam.ai/l/it-services-companies-austria) (70)
- [Financial Services companies in Austria](https://www.tamtam.ai/l/financial-services-companies-austria) (68)
- [Publicly traded companies in Austria](https://www.tamtam.ai/l/publicly-traded-companies-austria) (58)
- [Professional services firms in Austria](https://www.tamtam.ai/l/professional-services-firms-austria) (58)
- [Automotive manufacturers and suppliers in Austria](https://www.tamtam.ai/l/automotive-companies-austria) (53)
- [Consulting firms in Austria](https://www.tamtam.ai/l/consulting-firms-austria) (48)
- [Machinery Manufacturing companies in Austria](https://www.tamtam.ai/l/machinery-manufacturing-companies-austria) (47)
- [Research institutes in Austria](https://www.tamtam.ai/l/research-institutes-austria) (45)

## The same list elsewhere in Austria

- [Corporate groups and holding companies in Upper Austria](https://www.tamtam.ai/l/holding-companies-upper-austria) (31)
- [Corporate groups and holding companies in Vienna](https://www.tamtam.ai/l/holding-companies-vienna) (47)

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Source: https://www.tamtam.ai/l/holding-companies-austria