# Corporate groups and holding companies headquartered in Upper Austria
Tamtam tracks 31 corporate groups and holding companies headquartered in Upper Austria. This list ranks all of them by number of employees on LinkedIn, led by Fronius, Greiner and BWT Group. Their median headcount is 592. Half of them were founded in 1948 or later. The most common headquarters are Linz (10).
This selection of companies in Upper Austria comprises primarily large corporations and holding companies, many of which are engaged in manufacturing and industrial technology. Notable examples include Fronius, manufacturing battery charging systems and welding technology; Greiner, a global supplier of plastics and foam solutions; ENGEL, a leader in injection moulding machines; and Rosenbauer Group, a provider of fire protection vehicles. The list also features academic and financial institutions like Johannes Kepler Universität Linz and Raiffeisenlandesbank Oberösterreich AG.
A significant pattern observed is the strong presence of companies with a long history, many founded in the mid-20th century. Several of the largest employers, such as Fronius and ENGEL, were established in 1945. The regional capital Linz appears as a common headquarters city, hosting diverse entities from higher education and banking to steel production with voestalpine.
🇦🇹 Upper Austria · 31 companies · Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Fronius](https://www.tamtam.ai/c/fronius-osterreich) (fronius.com)
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 |
| 2 | [Greiner](https://www.tamtam.ai/c/greiner) (greiner.com)
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 |
| 3 | [BWT Group](https://www.tamtam.ai/c/bwt-group) (bwt.com)
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 | |
| 4 | [ENGEL](https://www.tamtam.ai/c/engel) (engelglobal.com)
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 |
| 5 | [Johannes Kepler Universität Linz](https://www.tamtam.ai/c/johannes-kepler-universitat-linz) (jku.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 | Higher Education | 🇦🇹 Linz | 2,223 | 1966 |
| 6 | [voestalpine](https://www.tamtam.ai/c/voestalpine) (voestalpine.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 | Mining | 🇦🇹 Linz | 1,753 | |
| 7 | [Rosenbauer Group](https://www.tamtam.ai/c/rosenbauer-group) (rosenbauer.com)
provider of fire protection vehicles, digital applications, personal and technical equipment for emergency and disaster control worldwide | Motor Vehicle Manufacturing | 🇦🇹 Leonding | 1,697 | 1866 |
| 8 | [FACC AG](https://www.tamtam.ai/c/facc-ag) (facc.com)
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 |
| 9 | [S&T AG \| S&T Group](https://www.tamtam.ai/c/s-and-t-ag-s-and-t-group) (kontron.com)
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 | |
| 10 | [Greiner Packaging](https://www.tamtam.ai/c/greiner-packaging) (greiner-gpi.com)
Development, production, and trading of packaging, plastics, and machinery, alongside management and administration of associated companies. | Packaging and Containers Manufacturing | 🇦🇹 Sattledt | 1,050 | |
| 11 | [Raiffeisenlandesbank Oberösterreich AG](https://www.tamtam.ai/c/raiffeisenlandesbank-oberosterreich-ag) (raiffeisen.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 |
| 12 | [KEBA Group](https://www.tamtam.ai/c/keba-group) (keba.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 | Automation Machinery Manufacturing | 🇦🇹 Linz | 854 | 1968 |
| 13 | [XXXLutz Österreich](https://www.tamtam.ai/c/xxxlutz-osterreich) (karriere.xxxlutz.at)
The company operates over 320 furniture stores in 13 European countries with a focus on customer and employee satisfaction, and high turnover | Retail Furniture and Home Furnishings | 🇦🇹 4600 Wels | 751 | 1945 |
| 14 | [LINZ AG](https://www.tamtam.ai/c/linz-ag) (linzag.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 |
| 15 | [OÖ Gesundheitsholding GmbH](https://www.tamtam.ai/c/oo-gesundheitsholding-gmbh) (ooeg.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 |
| 16 | [Silhouette Group](https://www.tamtam.ai/c/silhouette-group) (silhouette-group.com)
A global market leader in premium eyewear, known for incredible lightness and comfort Offers sustainable, made-in-Austria lenses and frames | Manufacturing | 🇦🇹 Linz | 592 | 1964 |
| 17 | [delfort](https://www.tamtam.ai/c/delfort) (delfortgroup.com)
Production of functional, lightweight specialty papers used in packaging, labeling, and everyday consumer products across global markets. | Paper and Forest Product Manufacturing | 🇦🇹 Traun | 572 | 2006 |
| 18 | [Aspöck Systems](https://www.tamtam.ai/c/aspock-systems) (aspoeck.com)
With over 45 years of experience, this company is Europe's leading manufacturer of pre-fabricated lighting systems for various types of vehicles, from concept development to testing | Motor Vehicle Manufacturing | 🇦🇹 Peuerbach | 523 | 1977 |
| 19 | [HABAU Hoch- und Tiefbaugesellschaft m.b.H](https://www.tamtam.ai/c/habau-hoch-und-tiefbaugesellschaft-m-b-h) (habaugroup.com)
A full-service construction company specializing in structural engineering, civil engineering, pipeline construction, mining, timber construction, and plant engineering since 1913 | Construction | 🇦🇹 Perg | 522 | |
| 20 | [Hawle Austria Group](https://www.tamtam.ai/c/hawle-austria-group) (hawle.com)
The company specializes in producing and distributing high-quality valves for drinking water, providing solutions for water treatment, distribution, and fire protection worldwide | Industrial Machinery Manufacturing | 🇦🇹 Vöcklabruck | 517 | 1948 |
| 21 | [Teufelberger Group](https://www.tamtam.ai/c/teufelberger-group) (teufelberger.com)
Manufacture fiber and steel wire ropes, synthetic ropes for various uses, and plastic strapping for transport security worldwide. | Manufacturing | 🇦🇹 Wels | 516 | 1790 |
| 22 | [Felbermayr](https://www.tamtam.ai/c/felbermayr) (felbermayr.cc)
A family-owned company offering transport, lifting technology, and civil engineering services with a strong customer focus, positioning itself as a full-service provider | Transportation, Logistics, Supply Chain and Storage | 🇦🇹 Wels | 488 | 1942 |
| 23 | [x-tention](https://www.tamtam.ai/c/x-tention) (x-tention.com)
x-tention Group harmonizes and integrates IT systems in healthcare and industry, enabling customers to focus on their core business with personalized IT solutions | IT Services and IT Consulting | 🇦🇹 Wels | 390 | 2001 |
| 24 | [KEBA Industrial Automation](https://www.tamtam.ai/c/keba-industrial-automation) (keba.com)
A company specializing in innovative automation solutions for various industries, providing modular and safe hardware and software for industrial requirements | Automation Machinery Manufacturing | 🇦🇹 Linz | 356 | 1968 |
| 25 | [WINTERSTEIGER Group](https://www.tamtam.ai/c/wintersteiger-group) (wintersteiger.com)
An international machinery and plant engineering group providing innovative solutions for niche markets, constantly thinking about tomorrow and offering endless possibilities | Machinery Manufacturing | 🇦🇹 Ried im Innkreis | 347 | 1953 |
| 26 | [Die eww Gruppe](https://www.tamtam.ai/c/die-eww-gruppe) (eww.at)
For over 100 years, we have been taking responsibility for our customers, the environment, and the future with a focus on energy for tomorrow | Utilities | 🇦🇹 Wels | 329 | 1899 |
| 27 | [HAINZL Industriesysteme GmbH](https://www.tamtam.ai/c/hainzl-industriesysteme-gmbh) (hainzl.at)
Design and manufacture of customized products and machinery focusing on automation, drive technology, and control systems for mechanical engineering and energy sectors. | Machinery Manufacturing | 🇦🇹 Linz | 296 | 1965 |
| 28 | [Schwarzmüller Group](https://www.tamtam.ai/c/schwarzmuller-group) (schwarzmueller.com)
A leading supplier of towed commercial vehicles in Europe, offering customized transport solutions with innovative technology and a wide range of vehicle types | Machinery Manufacturing | 🇦🇹 Freinberg | 229 | 1871 |
| 29 | [Banner Group](https://www.tamtam.ai/c/banner-group) (bannerbatterien.com)
Leading European battery brand producing premium quality starter and industrial batteries for major vehicle manufacturers since 1937 with a commitment to sustainability | Appliances, Electrical, and Electronics Manufacturing | 🇦🇹 Linz | 220 | 1937 |
| 30 | [KUK](https://www.tamtam.ai/c/kuk) (kuk.com)
Specializing in food and pharma ingredients, we provide innovative solutions for manufacturers, acting as a link between suppliers and clients | Food and Beverage Services | 🇦🇹 Ried im Innkreis | 207 | 1945 |
| 31 | [Teufelberger-Redaelli](https://www.tamtam.ai/c/teufelberger-redaelli) (teufelberger.com)
A company providing high performance steel wire ropes, world-class technical support, and a leading position in the global market sector | Machinery Manufacturing | 🇦🇹 Wels | 186 | 1819 |
## 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 Upper Austria
- [The largest companies in Upper Austria](https://www.tamtam.ai/l/largest-companies-upper-austria) (199)
- [Multinational companies in Upper Austria](https://www.tamtam.ai/l/multinational-companies-upper-austria) (96)
- [Companies with in-house R&D in Upper Austria](https://www.tamtam.ai/l/r-and-d-companies-upper-austria) (63)
- [Manufacturers in Upper Austria](https://www.tamtam.ai/l/manufacturers-upper-austria) (60)
- [Hardware manufacturers in Upper Austria](https://www.tamtam.ai/l/hardware-companies-upper-austria) (40)
- [Family-owned companies in Upper Austria](https://www.tamtam.ai/l/family-owned-companies-upper-austria) (27)
## The same list elsewhere in Austria
- [Corporate groups and holding companies in Austria](https://www.tamtam.ai/l/holding-companies-austria) (134)
- [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-upper-austria