This selection of large multinational companies in Vienna shows a concentration in financial services, telecommunications, and manufacturing. Noteworthy examples include Vienna Insurance Group, a major insurance provider in Central and Eastern Europe; A1 Telekom Austria Group, a digital services and communications provider; RHI Magnesita, a global leader in refractory products; and Mondi Group, which produces packaging solutions. These companies are generally well-established, with several having long operational histories.
A clear pattern among these firms is their strong focus on Central and Eastern European markets, often serving as regional hubs. Many also exhibit a vertically integrated value chain, from raw materials to finished products, or offer comprehensive service portfolios across multiple countries.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 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. |
18,276 | |||
| 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 |
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 | |||
| 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 |
脰BBholding.oebb.at
With 13 million daily passengers and 1,300 freight trains, 脰BB 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 |
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 | |||
| 10 | 5,712 | ||||
| 11 |
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 | |||
| 12 |
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 | |||
| 13 |
Raiffeisen Bankengrupperaiffeisen.at
A leading banking group with regional central banks and independent branches, employing 24,700 people in 1,955 locations |
4,377 | |||
| 14 |
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 |
4,226 | |||
| 15 |
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 | |||
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. | |||||
| 16 |
International Atomic Energy Agency (IAEA)iaea.org
An international organization promoting safe, secure, and peaceful use of nuclear technologies through collaboration with Member States and global partners |
3,731 | |||
| 17 | 3,352 | ||||
| 18 |
Austrian Airlinesaustrian.com
Leading Austrian airline operating worldwide routes from Vienna, focusing on high service quality, environmental responsibility, and exceptional passenger experience. |
3,206 | |||
| 19 |
脰sterreichische 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 |
3,080 | |||
| 20 | 3,068 | ||||
| 21 |
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 |
2,970 | |||
| 22 |
Borealisborealisgroup.com
A leading provider of sustainable polyolefin solutions, specializing in recycling and base chemicals, offering innovative material solutions for various industries globally |
2,769 | |||
| 23 |
GoStudentgostudent.org
Leading hybrid tutoring company combining online and offline education services to support millions of families and unlock children's potential. |
2,718 | |||
| 24 | 2,705 | ||||
| 25 |
WU (Vienna University of Economics and Business)wu.ac.at
Leading academic institution for business and economics education, fostering contemplation, creativity, and pioneering research to enhance economic capability and social prosperity. |
2,647 | |||
| 26 |
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 | |||
| 27 |
ANDRITZ Hydroandritz.com
Global leader in supplying electromechanical equipment and services for hydropower stations, offering innovative solutions for new and existing plants, and comprehensive maintenance services |
2,545 | |||
| 28 |
MM Packagingmm.group
Global producer of sustainable folding cartons serving beauty, food, and healthcare sectors with fiber-based packaging across multiple continents. |
2,448 | |||
| 29 |
Wiener St盲dtische 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 |
2,250 | |||
| 30 |
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 | |||
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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 Vienna
- The largest companies in Vienna 580
- Critical infrastructure operators in Vienna 73
- Financial services firms in Vienna 71
- IT Services and IT Consulting companies in Vienna 61
- Companies with in-house R&D in Vienna 60
- SaaS companies in Vienna 51
- Software Development companies in Vienna 49
- Companies with a mobile app in Vienna 48
- Public sector organisations in Vienna 48
- Manufacturers in Vienna 48
- Financial Services companies in Vienna 47
- Corporate groups and holding companies in Vienna 47
- Retail chains in Vienna 41
- IT services companies in Vienna 37
- Education providers in Vienna 36
- Professional services firms in Vienna 35
- Publicly traded companies in Vienna 29
- Hardware manufacturers in Vienna 27
- Consulting firms in Vienna 25
- Banking companies in Vienna 25
The same list elsewhere in Austria
- Multinational companies in Austria 578
- Multinational companies in Upper Austria 96
- Multinational companies in Lower Austria 60
- Multinational companies in Styria 56
- Multinational companies in Salzburg 38
- Multinational companies in Tyrol 31
- Multinational companies in Vorarlberg 31
- Multinational companies in Linz 29