The companies in Linz are diverse, including large industrial and service groups, as well as public institutions. Autonoma develops digital platforms for industrial machinery, while Swietelsky AG is a construction company. Johannes Kepler Universität Linz is a university, and voestalpine is a global steel and technology group. Raiffeisenlandesbank Oberösterreich AG is a regional bank, and KEBA Group specializes in automation machinery manufacturing. Kepler Universitätsklinikum GmbH is a university hospital.
Most of these companies have their headquarters in Linz. The list shows a mix of industries, with a notable presence of manufacturing, banking, and public services, indicating a diversified economic landscape in the city.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Autonomaautonoma.cloud
Digital platform for industrial machinery manufacturers to offer smart services, predictive maintenance, and generate service revenues through digitalization and data visualization |
5,411 | |||
| 2 |
Swietelsky AGswietelsky.at
A leading construction company with over 12,000 employees and 3 billion Euro in construction output, offering high-quality, flexible services internationally, nationally, and regionally |
2,269 | |||
| 3 |
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 | |||
| 4 |
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 | |||
| 5 |
voestalpine Steel Divisionvoestalpine.com
A pioneering steel manufacturer dedicated to sustainable, low-carbon production and innovative technologies for a clean and livable future |
1,140 | |||
| 6 |
Land Oberösterreichland-oberoesterreich.gv.at
The company offers diverse job opportunities in over 80 professions, with tailored training, support for work-life balance, and flexible working arrangements |
1,111 | |||
| 7 |
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 | |||
| 8 |
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 | |||
| 9 |
Kepler Universitätsklinikum GmbHkepleruniklinikum.at
A leading university hospital in Austria with 6,700 employees, offering a wide range of medical services, specialized centers, and comprehensive training programs |
833 | |||
| 10 |
Stadt Linzlinz.at
City administration in Linz focusing on providing services, ensuring compliance with legislation, supporting political entities, and developing organizational goals for the population |
699 | |||
| 11 | 633 | ||||
| 12 |
OÖ Gesundheitsholding GmbHooeg.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 |
620 | |||
| 13 |
Sparkasse Oberösterreichsparkasse-ooe.at
With a deep connection to the region for 175 years, this company provides financial solutions, listens to customers, and actively shapes a sustainable future |
597 | |||
| 14 |
Silhouette Groupsilhouette-group.com
A global market leader in premium eyewear, known for incredible lightness and comfort Offers sustainable, made-in-Austria lenses and frames |
592 | |||
| 15 |
BBRZ (Berufliches Bildungs- und Rehabilitationszentrum)bbrz.at
A non-profit organization providing vocational rehabilitation services, creating new job opportunities and integrating individuals back into the workforce with tailored solutions |
588 | |||
| 16 |
Raiffeisen Software GmbHr-software.at
Develops innovative IT solutions tailored to banking sector needs, focusing on agility, customer-centric software, and collaborative work culture. |
553 | |||
| 17 |
HAUSER GmbHhauser.com
Family-run turnkey supplier providing refrigerated display cabinets and refrigeration systems across Europe through innovative technology, modern corporate culture, and flat organizational hierarchies. |
537 | |||
| 18 |
Energie AG OÖenergieag.at
Supplies electricity from renewable sources, natural gas, and heat while providing waste management, water supply, and wastewater services as a regional employer. |
535 | |||
| 19 |
Schachermayer GmbHschachermayer.at
Wholesale distributor of construction, furniture hardware, tools, fasteners, chemical products, precast building parts, kitchen appliances, and sinks Specializes in logistics optimization |
534 | |||
| 20 |
voestalpine group-ITvoestalpine.com
IT partner within voestalpine Group offering a wide range of services to enable innovation and support IT needs for the Group's companies |
533 | |||
| 21 |
Brau Union Österreichbrauunion.at
Passionate about delivering the best brands for consumers while caring for colleagues and the environment Embracing joy, courage, and career opportunities |
528 | |||
| 22 | 
Bildungsdirektion Oberösterreichbildung-ooe.gv.at
The Education Directorate for Upper Austria oversees childcare centers, schools, and supports students, parents, and educators in providing optimal learning conditions for 200,000 children and youth |
528 | |||
| 23 |
WIFI Oberösterreichwifi-ooe.at
Leading provider of professional education and training, supporting individuals and organizations in advancing their skills for current tasks and future challenges through recognized, practical courses |
414 | |||
| 24 |
MIC Customs Solutionsmic-cust.com
A global leader providing customs and trade compliance software solutions to help companies grow, comply, and compete globally |
394 | |||
| 25 |
Ordensklinikum Linzordensklinikum.at
A highly qualified team in medicine and nursing, along with state-of-the-art infrastructure, establish a center of medical excellence |
386 | |||
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 |
KEBA Industrial Automationkeba.com
A company specializing in innovative automation solutions for various industries, providing modular and safe hardware and software for industrial requirements |
356 | |||
| 27 |
LeitnerLeitner Austrialeitnerleitner.com
A leading tax advisory and auditing firm in the CEE/SEE region, offering personalized solutions for tax, audit, and financial advisory issues |
337 | |||
| 28 |
Axians ICT Austria GmbHaxians.at
Provide full-service enterprise IT solutions including hardware procurement, cloud services, cybersecurity, SAP, software development, and advanced analytics with human focus. |
333 | |||
| 29 |
WKO Oberösterreichwko.at
Representing over 100,000 member businesses, this organization advocates for future-oriented policies in workforce, innovation, sustainability, relief, and exports They offer expert advice and informative services |
323 | |||
| 30 |
Storyblokstoryblok.com
A content management system enabling developers and marketers to create high-quality content experiences for various digital channels Loved by leading brands |
317 | |||
| 31 |
VKB-Bankkarriere.vkb-bank.at
The company provides financing for businesses and homes through customer deposits, supporting local businesses and sustainable growth in the region |
312 | |||
| 32 |
HAINZL Industriesysteme GmbHhainzl.at
Design and manufacture of customized products and machinery focusing on automation, drive technology, and control systems for mechanical engineering and energy sectors. |
296 | |||
| 33 |
Thalia Buch & Medien GmbHthalia.at
A company focused on making content easily accessible and engaging, promoting reading culture, offering expert guidance, and creating a welcoming atmosphere for all |
251 | |||
| 34 |
Banner Groupbannerbatterien.com
Leading European battery brand producing premium quality starter and industrial batteries for major vehicle manufacturers since 1937 with a commitment to sustainability |
220 | |||
| 35 |
WFL Millturn Technologies GmbH & Co. KGwfl.at
A global leader in complete machining solutions, specializing in multifunctional turning-boring-milling centers for complex components with utmost precision and efficiency |
220 | |||
| 36 |
Oberösterreichische Versicherung AGversich.at
A leading insurance company in Austria, with over 200 years of history, providing security and protection to clients in Oberösterreich and beyond |
217 | |||
| 37 |
3 Banken IT GmbH3bankenit.at
An IT company with locations in Linz, Klagenfurt, and Innsbruck, providing IT services for Oberbank, BTV, and BKS Bank |
213 | |||
| 38 |
FH Gesundheitsberufe OÖfh-gesundheitsberufe.at
The University offers Bachelor and Master programs in health professions, with experienced faculty, industry speakers, and internships for practical training |
181 | |||
| 39 | 177 | ||||
| 40 |
BILFINGER INDUSTRIAL SERVICES - AUSTRIAbilfinger.com
Leading provider of industrial services in Austria, offering full-service solutions for industries like pipeline construction, power plants, hydropower, turbines, and equipment installation and maintenance |
173 | |||
| 41 |
karriere.atkarriere.at
Austria's top online job portal connecting job seekers with top companies, offering career tools, information, and a wide social media presence |
173 | |||
| 42 |
Business Upper Austriabiz-up.at
Regional government agency driving innovation, supporting company settlement and expansion, and providing tailored services for business success in Upper Austria. |
170 | |||
| 43 |
BFI OÖbfi-ooe.at
A leading adult education provider in Upper Austria, offering a wide range of courses tailored to individuals and businesses, focusing on personal, private, and professional development |
157 | |||
| 44 |
OÖNachrichtennachrichten.at
Get fast and up-to-date news with the daily newspaper for the people of Upper Austria - OÖNachrichten - available on nachrichtenat! |
146 | |||
| 45 |
DS AUTOMOTION GmbHds-automotion.com
Global supplier of automated guided vehicles and autonomous mobile robotics, specializing in automation solutions for various industries, offering customized AGVs and software solutions |
140 | |||
| 46 |
adidas Eyewearadidas.com
designs and manufactures specialized eyewear for athletes, focusing on vision clarity, protection, fit, and durability across sports. |
126 | |||
| 47 | 122 | ||||
| 48 |
Industrie Informatik GmbHindustrieinformatik.com
Provides manufacturing execution systems and an open manufacturing platform to discrete manufacturers, enabling transparency, traceability, and operational control for improved efficiency and data-driven decisions. |
91 | |||
| 49 |
VERITAS Verlags- und Handelsges.m.b.H. & Co. OGveritas.at
Austria's top educational publisher, empowering individual learning success through a range of products and services |
90 | |||
| 50 |
KEPLER-FONDS Kapitalanlagegesellschaft m.b.H.kepler.at
One of the top Austrian investment firms with EUR 1676 billion in assets under management across 132 funds |
70 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Linz
The same list elsewhere in Austria
- The largest companies in Austria 1,412
- The largest companies in Upper Austria 199
- The largest companies in Styria 139
- The largest companies in Lower Austria 123
- The largest companies in Tyrol 95
- The largest companies in Salzburg 86
- The largest companies in Vorarlberg 60
- The largest companies in Vienna 580
- The largest companies in Graz 80
- The largest companies in Innsbruck 41