# The 50 largest companies in Linz

Tamtam tracks 69 companies headquartered in Linz. This list ranks the 50 largest by number of employees on LinkedIn, led by Autonoma, Swietelsky AG and Johannes Kepler Universität Linz. Their median headcount is 386. Half of them were founded in 1966 or later.

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.

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

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Autonoma](https://www.tamtam.ai/c/autonoma-linz) (autonoma.cloud)<br>Digital platform for industrial machinery manufacturers to offer smart services, predictive maintenance, and generate service revenues through digitalization and data visualization | IT Services and IT Consulting | 🇦🇹 Linz | 5,411 | 2017 |
| 2 | [Swietelsky AG](https://www.tamtam.ai/c/swietelsky-ag) (swietelsky.at)<br>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 | Construction | 🇦🇹 Linz | 2,269 | 1936 |
| 3 | [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 |
| 4 | [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 |  |
| 5 | [voestalpine Steel Division](https://www.tamtam.ai/c/voestalpine-steel-division) (voestalpine.com)<br>A pioneering steel manufacturer dedicated to sustainable, low-carbon production and innovative technologies for a clean and livable future | Primary Metal Manufacturing | 🇦🇹 Linz | 1,140 |  |
| 6 | [Land Oberösterreich](https://www.tamtam.ai/c/land-oberosterreich) (land-oberoesterreich.gv.at)<br>The company offers diverse job opportunities in over 80 professions, with tailored training, support for work-life balance, and flexible working arrangements | Government Administration | 🇦🇹 Linz | 1,111 |  |
| 7 | [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 |
| 8 | [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 |
| 9 | [Kepler Universitätsklinikum GmbH](https://www.tamtam.ai/c/kepler-universitatsklinikum-gmbh) (kepleruniklinikum.at)<br>A leading university hospital in Austria with 6,700 employees, offering a wide range of medical services, specialized centers, and comprehensive training programs | Hospitals and Health Care | 🇦🇹 Linz | 833 | 2015 |
| 10 | [Stadt Linz](https://www.tamtam.ai/c/stadt-linz) (linz.at)<br>City administration in Linz focusing on providing services, ensuring compliance with legislation, supporting political entities, and developing organizational goals for the population | Government Administration | 🇦🇹 Linz | 699 | 1490 |
| 11 | [LINZ AG](https://www.tamtam.ai/c/linz-ag) (linzag.at)<br>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 |
| 12 | [OÖ Gesundheitsholding GmbH](https://www.tamtam.ai/c/oo-gesundheitsholding-gmbh) (ooeg.at)<br>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 |
| 13 | [Sparkasse Oberösterreich](https://www.tamtam.ai/c/sparkasse-oberosterreich) (sparkasse-ooe.at)<br>With a deep connection to the region for 175 years, this company provides financial solutions, listens to customers, and actively shapes a sustainable future | Banking | 🇦🇹 Linz | 597 | 1849 |
| 14 | [Silhouette Group](https://www.tamtam.ai/c/silhouette-group) (silhouette-group.com)<br>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 |
| 15 | [BBRZ (Berufliches Bildungs- und Rehabilitationszentrum)](https://www.tamtam.ai/c/bbrz-berufliches-bildungs-und-rehabilitationszentrum) (bbrz.at)<br>A non-profit organization providing vocational rehabilitation services, creating new job opportunities and integrating individuals back into the workforce with tailored solutions | Civic and Social Organizations | 🇦🇹 Linz | 588 | 1975 |
| 16 | [Raiffeisen Software GmbH](https://www.tamtam.ai/c/raiffeisen-software-gmbh) (r-software.at)<br>Develops innovative IT solutions tailored to banking sector needs, focusing on agility, customer-centric software, and collaborative work culture. | Software Development | 🇦🇹 Linz | 553 | 2015 |
| 17 | [HAUSER GmbH](https://www.tamtam.ai/c/hauser-gmbh) (hauser.com)<br>Family-run turnkey supplier providing refrigerated display cabinets and refrigeration systems across Europe through innovative technology, modern corporate culture, and flat organizational hierarchies. | Industrial Machinery Manufacturing | 🇦🇹 Linz | 537 | 1946 |
| 18 | [Energie AG OÖ](https://www.tamtam.ai/c/energie-ag-oo) (energieag.at)<br>Supplies electricity from renewable sources, natural gas, and heat while providing waste management, water supply, and wastewater services as a regional employer. | Utilities | 🇦🇹 Linz | 535 | 1892 |
| 19 | [Schachermayer GmbH](https://www.tamtam.ai/c/schachermayer-gmbh) (schachermayer.at)<br>Wholesale distributor of construction, furniture hardware, tools, fasteners, chemical products, precast building parts, kitchen appliances, and sinks Specializes in logistics optimization | Wholesale | 🇦🇹 Linz | 534 | 1838 |
| 20 | [voestalpine group-IT](https://www.tamtam.ai/c/voestalpine-group-it) (voestalpine.com)<br>IT partner within voestalpine Group offering a wide range of services to enable innovation and support IT needs for the Group's companies | IT Services and IT Consulting | 🇦🇹 Linz | 533 | 2003 |
| 21 | [Brau Union Österreich](https://www.tamtam.ai/c/brau-union-osterreich) (brauunion.at)<br>Passionate about delivering the best brands for consumers while caring for colleagues and the environment Embracing joy, courage, and career opportunities | Wholesale Food and Beverage | 🇦🇹 Linz | 528 |  |
| 22 | [Bildungsdirektion Oberösterreich](https://www.tamtam.ai/c/bildungsdirektion-oberosterreich) (bildung-ooe.gv.at)<br>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 | Education | 🇦🇹 Linz | 528 |  |
| 23 | [WIFI Oberösterreich](https://www.tamtam.ai/c/wifi-oberosterreich) (wifi-ooe.at)<br>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 | Higher Education | 🇦🇹 Linz | 414 | 1946 |
| 24 | [MIC Customs Solutions](https://www.tamtam.ai/c/mic-customs-solutions) (mic-cust.com)<br>A global leader providing customs and trade compliance software solutions to help companies grow, comply, and compete globally | IT Services and IT Consulting | 🇦🇹 Linz | 394 | 1988 |
| 25 | [Ordensklinikum Linz](https://www.tamtam.ai/c/ordensklinikum-linz) (ordensklinikum.at)<br>A highly qualified team in medicine and nursing, along with state-of-the-art infrastructure, establish a center of medical excellence | Hospitals and Health Care | 🇦🇹 Linz | 386 | 2007 |
| 26 | [KEBA Industrial Automation](https://www.tamtam.ai/c/keba-industrial-automation) (keba.com)<br>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 |
| 27 | [LeitnerLeitner Austria](https://www.tamtam.ai/c/leitnerleitner-austria) (leitnerleitner.com)<br>A leading tax advisory and auditing firm in the CEE/SEE region, offering personalized solutions for tax, audit, and financial advisory issues | Financial Services | 🇦🇹 Linz | 337 | 1959 |
| 28 | [Axians ICT Austria GmbH](https://www.tamtam.ai/c/axians-ict-austria-gmbh) (axians.at)<br>Provide full-service enterprise IT solutions including hardware procurement, cloud services, cybersecurity, SAP, software development, and advanced analytics with human focus. | IT Services and IT Consulting | 🇦🇹 Linz | 333 | 1994 |
| 29 | [WKO Oberösterreich](https://www.tamtam.ai/c/wko-oberosterreich) (wko.at)<br>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 | Business Consulting and Services | 🇦🇹 Linz | 323 |  |
| 30 | [Storyblok](https://www.tamtam.ai/c/storyblok) (storyblok.com)<br>A content management system enabling developers and marketers to create high-quality content experiences for various digital channels Loved by leading brands | Software Development | 🇦🇹 Linz | 317 | 2017 |
| 31 | [VKB-Bank](https://www.tamtam.ai/c/vkb-bank) (karriere.vkb-bank.at)<br>The company provides financing for businesses and homes through customer deposits, supporting local businesses and sustainable growth in the region | Banking | 🇦🇹 Linz | 312 | 1873 |
| 32 | [HAINZL Industriesysteme GmbH](https://www.tamtam.ai/c/hainzl-industriesysteme-gmbh) (hainzl.at)<br>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 |
| 33 | [Thalia Buch & Medien GmbH](https://www.tamtam.ai/c/thalia-buch-and-medien-gmbh) (thalia.at)<br>A company focused on making content easily accessible and engaging, promoting reading culture, offering expert guidance, and creating a welcoming atmosphere for all | Retail | 🇦🇹 Linz | 251 | 1918 |
| 34 | [Banner Group](https://www.tamtam.ai/c/banner-group) (bannerbatterien.com)<br>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 |
| 35 | [WFL Millturn Technologies GmbH & Co. KG](https://www.tamtam.ai/c/wfl-millturn-technologies-gmbh-and-co-kg) (wfl.at)<br>A global leader in complete machining solutions, specializing in multifunctional turning-boring-milling centers for complex components with utmost precision and efficiency | Machinery Manufacturing | 🇦🇹 Linz | 220 | 1948 |
| 36 | [Oberösterreichische Versicherung AG](https://www.tamtam.ai/c/oberosterreichische-versicherung-ag) (versich.at)<br>A leading insurance company in Austria, with over 200 years of history, providing security and protection to clients in Oberösterreich and beyond | Insurance | 🇦🇹 Linz | 217 | 1811 |
| 37 | [3 Banken IT GmbH](https://www.tamtam.ai/c/3-banken-it-gmbh) (3bankenit.at)<br>An IT company with locations in Linz, Klagenfurt, and Innsbruck, providing IT services for Oberbank, BTV, and BKS Bank | Software Development | 🇦🇹 Linz | 213 | 1991 |
| 38 | [FH Gesundheitsberufe OÖ](https://www.tamtam.ai/c/fh-gesundheitsberufe-oo) (fh-gesundheitsberufe.at)<br>The University offers Bachelor and Master programs in health professions, with experienced faculty, industry speakers, and internships for practical training | Higher Education | 🇦🇹 Linz | 181 | 2010 |
| 39 | [HYPO OOE](https://www.tamtam.ai/c/hypo-ooe) (hypo.at)<br>A leading universal bank in Austria with a focus on safety, stability, and sustainability Recognized for top ratings, services, and employer excellence | Banking | 🇦🇹 Linz | 177 | 1891 |
| 40 | [BILFINGER INDUSTRIAL SERVICES - AUSTRIA](https://www.tamtam.ai/c/bilfinger-industrial-services-austria) (bilfinger.com)<br>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 | Utility System Construction | 🇦🇹 Linz | 173 |  |
| 41 | [karriere.at](https://www.tamtam.ai/c/karriere-at) (karriere.at)<br>Austria's top online job portal connecting job seekers with top companies, offering career tools, information, and a wide social media presence | IT Services and IT Consulting | 🇦🇹 Linz | 173 | 2004 |
| 42 | [Business Upper Austria](https://www.tamtam.ai/c/business-upper-austria-oo-wirtschaftsagentur-gmbh) (biz-up.at)<br>Regional government agency driving innovation, supporting company settlement and expansion, and providing tailored services for business success in Upper Austria. | Non-profit Organizations | 🇦🇹 Linz | 170 |  |
| 43 | [BFI OÖ](https://www.tamtam.ai/c/bfi-oo) (bfi-ooe.at)<br>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 | Professional Training and Coaching | 🇦🇹 Linz | 157 | 1960 |
| 44 | [OÖNachrichten](https://www.tamtam.ai/c/oonachrichten) (nachrichten.at)<br>Get fast and up-to-date news with the daily newspaper for the people of Upper Austria - OÖNachrichten - available on nachrichtenat! | Book and Periodical Publishing | 🇦🇹 Linz | 146 | 1945 |
| 45 | [DS AUTOMOTION GmbH](https://www.tamtam.ai/c/ds-automotion-gmbh) (ds-automotion.com)<br>Global supplier of automated guided vehicles and autonomous mobile robotics, specializing in automation solutions for various industries, offering customized AGVs and software solutions | Automation Machinery Manufacturing | 🇦🇹 Linz | 140 | 1984 |
| 46 | [adidas Eyewear](https://www.tamtam.ai/c/adidas-eyewear) (adidas.com)<br>designs and manufactures specialized eyewear for athletes, focusing on vision clarity, protection, fit, and durability across sports. | Sporting Goods Manufacturing | 🇦🇹 Linz | 126 |  |
| 47 | [CELUM](https://www.tamtam.ai/c/celum) (celum.com)<br>CELUM provides a Content Supply Management Platform for creating and delivering engaging product experiences, helping clients showcase products effectively and drive customer engagement | Software Development | 🇦🇹 Linz | 122 | 1999 |
| 48 | [Industrie Informatik GmbH](https://www.tamtam.ai/c/industrie-informatik-gmbh) (industrieinformatik.com)<br>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. | Software Development | 🇦🇹 Linz | 91 | 1991 |
| 49 | [VERITAS Verlags- und Handelsges.m.b.H. & Co. OG](https://www.tamtam.ai/c/veritas-verlags-und-handelsges-m-b-h-and-co-og) (veritas.at)<br>Austria's top educational publisher, empowering individual learning success through a range of products and services | Book and Periodical Publishing | 🇦🇹 Linz | 90 | 1945 |
| 50 | [KEPLER-FONDS Kapitalanlagegesellschaft m.b.H.](https://www.tamtam.ai/c/kepler-fonds-kapitalanlagegesellschaft-m-b-h) (kepler.at)<br>One of the top Austrian investment firms with EUR 1676 billion in assets under management across 132 funds | Investment Banking | 🇦🇹 Linz | 70 | 1998 |

## 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

- [Multinational companies in Linz](https://www.tamtam.ai/l/multinational-companies-linz) (29)

## The same list elsewhere in Austria

- [The largest companies in Austria](https://www.tamtam.ai/l/largest-companies-austria) (1,412)
- [The largest companies in Upper Austria](https://www.tamtam.ai/l/largest-companies-upper-austria) (199)
- [The largest companies in Styria](https://www.tamtam.ai/l/largest-companies-styria) (139)
- [The largest companies in Lower Austria](https://www.tamtam.ai/l/largest-companies-lower-austria) (123)
- [The largest companies in Tyrol](https://www.tamtam.ai/l/largest-companies-tyrol) (95)
- [The largest companies in Salzburg](https://www.tamtam.ai/l/largest-companies-salzburg) (86)
- [The largest companies in Vorarlberg](https://www.tamtam.ai/l/largest-companies-vorarlberg) (60)
- [The largest companies in Vienna](https://www.tamtam.ai/l/largest-companies-vienna) (580)
- [The largest companies in Graz](https://www.tamtam.ai/l/largest-companies-graz) (80)
- [The largest companies in Innsbruck](https://www.tamtam.ai/l/largest-companies-innsbruck) (41)

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Source: https://www.tamtam.ai/l/largest-companies-linz