| # | Company | Employees |
|---|---|---|
| 1 |
TÜV NORD GROUPtuev-nord-group.com
Offers global consulting, service, and inspection solutions across diverse sectors including mobility, industrial services, IT, natural resources, and aerospace. |
5,960 |
| 2 |
The University of Göttingenuni-goettingen.de
A renowned research university founded in 1737, offering a diverse range of subjects and emphasizing research-based teaching and excellence in various fields |
4,367 |
| 3 |
Leibniz Universität Hannoveruni-hannover.de
Providing education and research across natural sciences, engineering, humanities, social sciences, law, and economics with quality focus. |
3,668 |
| 4 |
Technische Universität Braunschweigtu-braunschweig.de
A leading institute of technology in Northern Germany, focusing on research in mobility, infections, metrology, and the city of the future |
3,079 |
| 5 |
Medizinische Hochschule Hannovermhh.de
A company based in Lower Saxony, Germany within the higher education sector, specializing in medical sciences and research |
2,541 |
| 6 |
Lebenshilfelebenshilfe-celle.de
A modern and versatile social enterprise offering a wide range of services including early childhood support, education, vocational training, employment, housing, and cultural activities |
2,051 |
| 7 |
Carl von Ossietzky University of Oldenburguol.de
A young university in Germany, focusing on interdisciplinary research to address societal challenges Collaborates globally and prepares students for various professions |
2,027 |
| 8 |
Universitätsmedizin Göttingenumg.eu
The company provides comprehensive healthcare services with a focus on education and research, offering cutting-edge medical treatment, training, and innovative career opportunities |
1,823 |
| 9 |
Leuphana University of Lüneburgleuphana.de
A growing network of 20,000+ members including alumni, students, faculty, and supporters of a university that promotes knowledge transfer and funds various projects |
1,709 |
| 10 |
Universität Osnabrückuni-osnabrueck.de
This university excels in research and teaching across humanities, social sciences, science, law, and business administration, fostering interdisciplinary studies and international collaborations. |
1,702 |
| 11 |
Hochschule Osnabrückhs-osnabrueck.de
A leading university of applied sciences in Lower Saxony offering a wide range of degree programs and conducting research in various fields |
1,633 |
| 12 |
IBB Institut für Berufliche Bildung AGibb.com
A leading private educational provider in Germany with over 60 locations, offering high-quality training services certified by ISO 9001 and trusted by various government agencies and businesses |
1,191 |
| 13 |
Hochschule Hannoverhs-hannover.de
The second largest university in the capital city of Lower Saxony, offering over 60 accredited study programs with a focus on teaching, research, and practical experience |
1,171 |
| 14 |
Ostfalia - University of Applied Sciencesostfalia.de
The company focuses on academic studies, research, development, and continuing education in Germany with an emphasis on practical applications and international partnerships |
950 |
| 15 |
HAWK - University of Applied Science and Artshawk.de
A state university in Lower Saxony offering a wide range of courses of study, including full-time, part-time, dual degree, and continuing education programs |
870 |
| 16 |
Technische Universität Clausthaltu-clausthal.de
Academic research and education institution founded in 1775, offering degrees in natural sciences, energy, economics, mathematics, and computer science to students globally |
849 |
| 17 |
Jade Hochschulejade-hs.de
Higher education institution offering maritime, engineering, business, and technology programs across three campuses with strong practical and ethical focus. |
791 |
| 18 |
Stiftung Universität Hildesheimuni-hildesheim.de
A university in Hildesheim offers a personalized atmosphere for studying selected scientific fields with a strong focus on practical relevance and individual support |
727 |
| 19 |
Hannover Medical Schoolmhh.de
A leading state institution in Lower Saxony for research, teaching, and superior healthcare in human medicine and dentistry, with integrated services on campus |
697 |
| 20 |
Georg-August-Universität Göttingenuni-goettingen.de
A renowned research university founded in 1737, offering diverse fields of study and exceptional resources in science, emphasizing research-based teaching |
609 |
| 21 |
University of Applied Sciences Emden/Leerhs-emden-leer.de
A university offering diverse Bachelor's and Master's programs in engineering, natural sciences, business, social work, and health science with a focus on regional impact and international education |
524 |
| 22 |
TÜV NORD Systems GmbH & Co. KGtuev-nord.de
A public safety company based in Hannover, Germany, specializing in providing safety and inspection services |
483 |
| 23 |
Klinikum Osnabrückklinikum-os.de
A leading medical facility offering the highest level of care, education, and training, with over 3,000 employees serving thousands of patients annually |
433 |
| 24 |
Landwirtschaftskammer Niedersachsenlwk-niedersachsen.de
The largest advisory and educational organization for agricultural businesses, providing support in areas such as work organization, plant and animal production, and economics |
376 |
| 25 |
DIAKOVERE gGmbHdiakovere.de
A leading non-profit healthcare and social services organization in Northern Germany, offering a wide range of services from hospitals to rehabilitation and hospice care |
352 |
| 26 |
University of Vechtauni-vechta.de
A leading educational institution in Oldenburg Münsterland with a focus on research, teaching, and internationalization, hosting 5,000 students and 500 employees |
344 |
| 27 |
Niels-Stensen-Klinikenniels-stensen-kliniken.de
The company operates the largest hospital group in Osnabrück and Emsland, offering a wide range of healthcare services including hospitals, clinics, nursing facilities, and hospice care |
315 |
| 28 |
Bildungswerk der Niedersächsischen Wirtschaft gGmbHbnw.de
As a solution partner, this company supports individuals and businesses in transformation processes by focusing on personal and organizational development through enjoyable learning experiences |
240 |
| 29 |
St. Bernward Krankenhaus GmbHbernward-khs.de
A modern hospital with a Christian tradition, focusing on patient care, employee well-being, and upholding high quality and ethical standards |
186 |
| 30 |
tecRacertecracer.com
tecRacer enables companies to reduce IT costs, enhance security, scalability, and performance through AWS services such as consulting, training, project management, and AWS managed services |
86 |
| 31 |
Trend Hair GmbHtrend-hair.net
A family-run hairdressing company offering stylish haircuts, colors, and styles while emphasizing competence, innovation, and passion They also provide training and wholesale services |
19 |
| 32 |
intrinsifyintrinsify.de
This company focuses on promoting genuine work over busywork through training, consultation, and publications in leadership and organizational development |
18 |
| 33 |
Entrepreneurship Hubentrepreneurship-hub.org
The Entrepreneurship Hub offers a wide range of programs and resources to support the establishment and growth of innovative and technology-based startups |
17 |
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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 2, 2026.
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