The largest publicly traded companies in Austria include a mix of established industrial groups and service providers. Among them are STRABAG, a construction technology group, Vienna Insurance Group, a major insurer in Central and Eastern Europe, and ANDRITZ, a global supplier of industrial plants and equipment. RHI Magnesita is a leader in refractory products, while Mondi Group specializes in packaging solutions. A1 Telekom Austria Group is a key telecommunications provider.
A notable pattern is the strong presence of companies with headquarters in Vienna, such as OMV, a sustainable fuels and chemicals company, UNIQA Insurance Group, Erste Group, and Raiffeisen Bank International AG. This suggests a concentration of corporate activity in the capital, spanning sectors from utilities and banking to specialized manufacturing and hospitality, as seen with DO & CO AG.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
STRABAGkarriere.strabag.com
Innovative and sustainable construction technology group with 79,000 employees worldwide, specializing in building, road, bridge, and tunnel construction, project development, and facility management |
22,209 | |||
| 2 |
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. |
18,276 | |||
| 3 |
ANDRITZandritz.com
A global supplier of plants, equipment, and services for various industries including hydropower, pulp & paper, metalworking, and solid/liquid separation |
14,107 | |||
| 4 |
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 | |||
| 5 |
RHI Magnesitarhimagnesita.com
Global leader in high-grade refractory products and solutions for industries with high-temperature processes, leveraging a vertically integrated value chain and diverse geographic presence |
12,000 | |||
| 6 |
Mondi Grouplinktr.ee
Global integrated company managing forests, producing pulp, paper, plastic films, and manufacturing sustainable industrial and consumer packaging solutions. |
9,160 | |||
| 7 |
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 | |||
| 8 | 6,877 | ||||
| 9 |
ams OSRAMams-osram.com
Global leader in light and sensor technologies, specializing in LEDs, lasers, and imaging sensors for automotive, medical, and industrial sectors. |
6,876 | |||
| 10 |
PORR Groupporr-group.com
Large European construction company specializing in building, civil engineering, and infrastructure services across multiple countries and international markets. |
6,454 | |||
| 11 |
Erste Grouperstegroup.com
A leading financial institute in Central and Eastern Europe, providing banking services to millions of customers, promoting career growth and innovation |
5,859 | |||
| 12 |
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 |
5,107 | |||
| 13 |
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 | |||
| 14 |
wienerbergerwienerberger.com
A leading provider of innovative solutions for the building envelope, infrastructure, and water and energy management, focusing on sustainability and affordability |
4,014 | |||
| 15 |
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 | |||
| 16 |
ams AGams-osram.com
Global leader in intelligent sensors, illumination, and visualization technologies enhancing safety, simplicity, and efficiency in everyday life. |
2,221 | |||
| 17 |
AGRANA Groupagrana.com
Adds value to agricultural commodities for industrial products globally. Leaders in fruit preparations, starch products, and sugar across Europe, Asia, and America. |
2,211 | |||
| 18 |
BAWAG Groupbawaggroup.com
Provides savings, payment, lending, leasing, investment, factoring, insurance products across multiple countries for retail and corporate customers. |
1,979 | |||
| 19 | 1,935 | ||||
| 20 | 1,839 | ||||
| 21 |
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 | |||
| 22 |
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 | |||
| 23 |
Rosenbauer Grouprosenbauer.com
provider of fire protection vehicles, digital applications, personal and technical equipment for emergency and disaster control worldwide |
1,697 | |||
| 24 |
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 | |||
| 25 |
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 | |||
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 |
Oberbankoberbank.at
Regional bank serving private customers and businesses with extensive branch network and international partnerships across Central Europe. |
1,594 | |||
| 27 |
Kapsch TrafficCom AGkapsch.net
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. |
1,345 | |||
| 28 |
VERBUNDverbund.com
A leading European utility company focused on renewable energy, primarily hydroelectricity, with operations in electricity generation, transmission, trading, and sales |
1,336 | |||
| 29 | 1,221 | ||||
| 30 |
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 | |||
| 31 |
SEMPERIT AGsemperitgroup.com
Development, production, and marketing of specialized polymer and plastic products including hoses, conveyor belts, and construction profiles worldwide. |
1,073 | |||
| 32 |
ASTAastagroup.com
A global leader in producing high-quality copper components for high-voltage industries, energy transition, and sustainability, with a focus on innovation and circular economy concepts |
628 | |||
| 33 |
Kapsch TrafficCom North Americakapsch.net
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. |
588 | |||
| 34 | 587 | ||||
| 35 |
AMAG Austria Metallamag-al4u.com
Supplier of primary aluminum and premium cast/rolled aluminum products, with a focus on recycling and sustainable production Specializes in aerospace components |
567 | |||
| 36 |
Austrian Postpost.at
This company oversees sales teams, manages international key accounts, conducts due diligence for acquisitions, and leads integration projects in the CEE region |
525 | |||
| 37 |
NXP Semiconductors Austrianxp.com
This company specializes in enabling secure connections and infrastructure for a smarter world, focusing on contactless identification systems in various applications |
391 | |||
| 38 | 205 | ||||
| 39 |
IMMOFINANZcpi-europe.com
Commercial real estate group focused on office and retail properties in eight core European markets Brands include STOP SHOP, VIVO!, and myhive Listed on Vienna and Warsaw stock exchanges |
121 | |||
| 40 |
feratel media technologiesferatel.at
A comprehensive solution provider for the tourism and hospitality industry, offering telecommunications, information/ reservation systems, and media services across multiple countries with 200 team members |
115 | |||
| 41 |
dentsu Austriadentsu.com
The company helps clients acquire, retain, and expand their best customers with top-notch services in Media, CRM, and Creativity, operating globally |
106 | |||
| 42 | 85 | ||||
| 43 |
Steyr Motors AGsteyr-motors.com
This company designs and produces high-performance diesel engines for a variety of vehicles and boats, offering full life-cycle support to clients |
74 | |||
| 44 |
iDWELLidwell.com
SaaS CRM software for property management, integrating all communication channels in one platform, enabling easy work via web or mobile app |
67 | |||
| 45 |
Standortagentur Tirolstandort-tirol.at
Innovating the future of Tirol through collaboration on digitalization, innovation, growth, capital, and European programs with a focus on sustainability and resilience |
63 | |||
| 46 |
CONFIDA Austriaconfida.at
An international tax advising, consulting, and auditing firm with offices in Austria and South-East Europe, providing optimal solutions for clients worldwide |
45 | |||
| 47 |
Kühne + Nagel Tilburgkuehne-nagel.com
Logistics company based in Tilburg, Netherlands, specializing in transport and supply chain solutions |
45 | |||
| 48 |
AUTO PLUS Fahrzeugzubehör GmbHautoplus.at
A supplier of stylish and practical automotive accessories, offering a wide range of products for various vehicle makes and models since 1989 |
32 | |||
| 49 | 28 | ||||
| 50 |
C-QUADRATc-quadrat.at
Independent asset manager with bank license since 2003, offering innovative investment strategies for institutional investors, listed on Frankfurt and Vienna Stock Exchanges |
24 | |||
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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
- Corporate groups and holding companies in Austria 134
- Family-owned companies in Austria 119
- Companies with a mobile app in Austria 114
- Software Development companies in Austria 103
- IT Services and IT Consulting companies in Austria 101
- SaaS companies in Austria 90
- Public sector organisations in Austria 88
- Education providers in Austria 81
- Banking companies in Austria 79
- IT services companies in Austria 70
- Financial Services companies in Austria 68
- Professional services firms in Austria 58
- Automotive manufacturers and suppliers in Austria 53
- Consulting firms in Austria 48
- Machinery Manufacturing companies in Austria 47
- Research institutes in Austria 45