These Cologne companies with in-house R&D span several industries, predominantly manufacturing, chemicals, and software. They include both large, established groups and younger firms. For instance, TÜV Rheinland Group offers testing and certification services, LANXESS specializes in specialty chemicals, and Uniklinik Köln is a university hospital. DeepL provides AI-powered translation, while RIMOWA creates luxury travel essentials.
A notable pattern among these companies is their diverse founding dates, ranging from the mid-19th century with KHD Humboldt Wedag (1856) and Leybold (1850), to more recent establishments like LANXESS (2004) and DeepL (2017). This indicates a mix of long-standing industrial expertise and newer technological developments.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
TÜV Rheinland Grouptuv.com
Testing, certifying, and training for products, processes, and management systems to ensure safety, quality, and efficiency worldwide. |
18,408 | |||
| 2 |
LANXESSlanxess.com
A leading specialty chemicals company with global operations, focusing on the development, manufacturing, and marketing of chemical intermediates, additives, and consumer protection products |
14,000 | |||
| 3 |
Uniklinik Kölnuk-koeln.de
Provides maximum medical care, conducts innovative research, and offers extensive medical education. Largest employer in Cologne, top university hospital. |
3,629 | |||
| 4 |
Cologne University of Applied Sciencesth-koeln.de
A diverse university focusing on technology, arts, and sciences, offering a wide range of degree programs and conducting research on societal challenges |
2,223 | |||
| 5 |
REWE digitalrewe-digital.com
A tech team of IT and non-IT specialists collaborates to bring innovative ideas to life, enhancing retail and improving lives Welcome to the Home of IT! |
1,846 | |||
| 6 |
RIMOWArimowa.com
A global lifestyle brand under LVMH, creating high-quality travel essentials with a focus on longevity, luxury, heritage, innovation, and craftsmanship |
1,708 | |||
| 7 | 1,468 | ||||
| 8 | 1,172 | ||||
| 9 |
KHD Humboldt Wedagkhd.com
Global authority in cement manufacturing, offering innovative equipment and solutions to increase productivity, efficiency, reduce costs, and improve environmental performance worldwide |
1,082 | |||
| 10 |
igus SE & Co. KGigus.eu
manufacturer of energy chain systems and polymer plain bearings, specializing in motion plastics for moving applications worldwide |
1,065 | |||
| 11 |
Leyboldleybold.com
Providing advanced vacuum pumps, systems, and customized solutions for manufacturing, research, coating, thin films, and analytical processes. |
921 | |||
| 12 | 824 | ||||
| 13 |
Deutsche Sporthochschule Kölndshs-koeln.de
Germany's only sport university offers quality education, international research, state-of-the-art programs, and renowned anti-doping support in various disciplines |
809 | |||
| 14 |
Kaufland e-commercekaufland-ecommerce.com
Operates international online marketplaces, connecting sellers with customers for a safe, easy, and personalized digital shopping experience, supported by platform technology and various services. |
674 | |||
| 15 |
Interzerointerzero.de
Development of tailored circular economy solutions, innovative plastic recycling technologies, and comprehensive packaging licensing and optimization services for businesses. |
559 | |||
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 |
SoSafesosafe-awareness.com
Empowers organizations to build security culture, mitigate risk through GDPR-compliant awareness programs. Behavioral science, smart algorithms, engaging personalized learning, smart attack simulations. |
507 | |||
| 17 |
TOYOTA RACINGtoyota-racing.com
A high-performance testing and development facility in Germany offering simulation solutions, engineering services, and championship-winning customer motorsport vehicles worldwide |
483 | |||
| 18 |
Böttcher Deutschlandboettcher.de
A global leader in elastomer materials production, printing chemicals, and roller manufacturing, with a strong emphasis on sustainability and problem-solving across industries |
441 | |||
| 19 |
POLIFILMpolifilm.com
Manufacturing extrusion and protective films globally for diverse industries like automotive, food, and construction, focusing on innovation and efficiency to develop and supply film solutions. |
392 | |||
| 20 |
REWE Systemsrewe-systems.com
The company develops efficient IT systems for the retail sector, solves challenges with innovative technologies, and optimizes existing application landscapes for a leading German and European retail and tourism conglomerate |
387 | |||
| 21 |
Pfeifer & Langen GmbH & Co. KGpfeifer-langen.com
A leading European sugar company with over 2,500 employees, focusing on innovation, tradition, and quality since 1870 Emphasizing diversity, growth, and career fulfillment |
377 | |||
| 22 |
STEINERTsteinertglobal.com
Global leader in providing innovative solutions for material separation in resource recovery and mining sectors, along with manufacturing anodized aluminum coils for electrotechnical applications |
354 | |||
| 23 | 
Bertrandt Ingenieurbüro GmbH
Architecture and planning company based in Cologne, Germany, specializing in innovative engineering solutions |
319 | |||
| 24 |
BUCHENbuchen.net
A leading industrial service provider in Europe with a focus on automated cleaning processes, tank services, remediation, and specialized industrial services |
311 | |||
| 25 |
pfm medical gmbhpfmmedical.com
Develops, produces, and sells specialized quality products and reliable services for healthcare, focusing on infusion, surgery, histotechnology, and cardio-vascular technologies to improve patient care. |
311 | |||
| 26 |
Klosterfrau Groupklosterfrau.com
Development, manufacturing, and sales of pharmaceutical products focusing on natural healing, with a broad portfolio and international presence. |
255 | |||
| 27 |
Cellex Cell Professionals GmbHcellex.me
Offers apheresis, cell manufacturing, and global transport for cellular therapies, supporting clinical and research institutions with stem cells, lymphocytes, and genetic modifications. |
86 | |||
| 28 |
ZOLL CMS GmbHlifevest.zoll.com
A global leader in medical products and software solutions, specializing in Cardiac Management Develops life-saving products like portable defibrillator vests for heart patients |
229 | |||
| 29 |
infodasinfodas.com
Founded in 1974, specializes in cyber and information security, offering consulting, high-security products, and IT security services to various sectors in Germany |
214 | |||
| 30 |
Open-Xchangeopen-xchange.com
A global leader in mail, messaging, and DNS-based security services through open-source software for a safe, open, and free internet |
198 | |||
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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 Cologne
- The largest companies in Cologne 464
- Multinational companies in Cologne 135
- SaaS companies in Cologne 51
- Financial services firms in Cologne 47
- Software Development companies in Cologne 44
- Retail chains in Cologne 40
- Critical infrastructure operators in Cologne 31
- IT services companies in Cologne 31
- Companies with a mobile app in Cologne 30
- IT Services and IT Consulting companies in Cologne 30
- Professional services firms in Cologne 30
- Financial Services companies in Cologne 28
- Consulting firms in Cologne 26
- Corporate groups and holding companies in Cologne 25
The same list elsewhere in Germany
- Companies with in-house R&D in Germany 2,450
- Companies with in-house R&D in Bavaria 529
- Companies with in-house R&D in Baden-Württemberg 520
- Companies with in-house R&D in North Rhine-Westphalia 455
- Companies with in-house R&D in Hesse 200
- Companies with in-house R&D in Lower Saxony 138
- Companies with in-house R&D in Rhineland-Palatinate 88
- Companies with in-house R&D in Schleswig-Holstein 52
- Companies with in-house R&D in Saxony 44
- Companies with in-house R&D in Berlin 165
- Companies with in-house R&D in Munich 148
- Companies with in-house R&D in Hamburg 84
- Companies with in-house R&D in Stuttgart 51
- Companies with in-house R&D in Frankfurt 38
- Companies with in-house R&D in Düsseldorf 30
- Companies with in-house R&D in Aachen 29
- Companies with in-house R&D in Bremen 25
- Companies with in-house R&D in Karlsruhe 25