These Croatian companies with in-house R&D are primarily large, established firms in various sectors. PLIVA and JGL d.d. are pharmaceutical manufacturers, with PLIVA focusing on affordable medicines and JGL d.d. specializing in sterile products. INA Grupa operates in oil and gas, while KONČAR Group provides sustainable solutions in power generation. Rimac Technology and Bugatti Rimac are involved in motor vehicle manufacturing, the latter designing luxury hypercars.
A notable pattern is the concentration of headquarters in Zagreb, including INA Grupa, PLIVA, KONČAR Group, and Ericsson Nikola Tesla, which offers ICT products and services. Two companies, Ascom and Medela, are headquartered in Baar, Switzerland, indicating a presence of international firms in Croatia's R&D landscape. The list also includes major educational and healthcare institutions like the University Hospital Centre Zagreb and the University of Zagreb, highlighting their role in local R&D.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 4,540 | ||||
| 2 | 2,157 | ||||
| 3 | 1,681 | ||||
| 4 |
Medelamedela.com
Global leader in healthcare solutions, specializing in research-based breast milk feeding and baby products, providing clinical education and improving health outcomes |
1,321 | |||
| 5 |
KONČAR Groupkoncar.hr
Leading Croatian exporter providing sustainable solutions in power generation, distribution, rail infrastructure, and digital platforms across 130 markets worldwide |
1,205 | |||
| 6 |
University Hospital Centre Zagreb, Croatiakbc-zagreb.hr
Leader in medical procedures and diagnostic methods, offering top-quality therapeutic procedures Operates 50+ referral centers of excellence, introducing innovative treatments like gamma knife radiosurgery and laparoscopic surgery |
1,201 | |||
| 7 |
Podravkapodravka.com
Global brand with presence on over 50 markets and 5 continents, specializing in food and pharmaceuticals Known for iconic product Vegeta |
1,123 | |||
| 8 |
Medicinski fakultet Sveučilišta u Zagrebumef.hr
Leading institution for medical training and research in South-East Europe, with focus on international collaborations and research in various medical fields |
1,110 | |||
| 9 |
Rimac Technologyrimac-technology.com
Rimac Technology provides full technology solutions for global OEMs, specializing in developing cutting-edge automotive systems from concept to serial production |
990 | |||
| 10 |
University of Zagreb / Sveučilište u Zagrebuunizg.hr
Leading Croatian university offering a wide range of academic programs in arts, biomedicine, engineering, humanities, natural sciences, and social sciences Specializes in teaching and research |
744 | |||
| 11 |
Ericsson Nikola Teslaericsson.hr
Leading provider of information-communication products and services for operators, as well as digital solutions in healthcare, transportation, public administration, utilities, and multimedia communications |
734 | |||
| 12 |
ENT - Ericsson Nikola Teslaericssonnikolatesla.com
Regional provider of ICT products and services for operators Specializing in innovative solutions for e-health, traffic, public administration, environment, utilities, and multimedia communication |
675 | |||
| 13 |
Marus-ATMmarus-atm.hr
Established in 1988, we specialize in research, development, and production of calibrating instruments, offering expertise in measuring, control systems, and Ex-protection |
647 | |||
| 14 |
Bugatti Rimacbugatti-rimac.com
Designing and producing high-performance luxury hypercars through collaboration between Rimac Automobili and Bugatti Automobiles, maintaining distinct brand identities. |
635 | |||
| 15 | 537 | ||||
| 16 |
University of Zadarunizd.hr
An academic institution in Croatia offering a wide range of undergraduate, graduate, doctoral, and specialist programs in diverse fields |
532 | |||
| 17 | 418 | ||||
| 18 |
University of Zagreb, Faculty of Sciencepmf.unizg.hr
The institution offers high-quality education and conducts research in natural sciences, mathematics, and interdisciplinary areas, with a focus on innovation and international collaboration |
400 | |||
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. | |||||
| 19 |
School of Medicine University of Zagrebmef.unizg.hr
An internationally recognized academic institution offering graduate, doctoral, and specialist programs in biomedicine, healthcare, nursing, and neuroscience, focusing on excellence in education and research |
358 | |||
| 20 |
University of Splitunist.hr
A large educational institution offering a wide range of undergraduate, graduate, and postgraduate study programs to approximately 20,000 students |
347 | |||
| 21 |
Institut IGH, d.d.igh.hr
This leading civil engineering consulting firm in Southern and Eastern Europe offers services in road design, water engineering, and more, with extensive testing capabilities |
344 | |||
| 22 | 328 | ||||
| 23 | 327 | ||||
| 24 | 317 | ||||
| 25 |
AD Plastik Groupadplastik.hr
Leading manufacturer of plastic car components in Eastern Europe, specializing in quality parts for the international automobile industry with a focus on employee success and innovation |
313 | |||
| 26 |
Klimaoprema d.o.o.klimaoprema.com
Experienced manufacturer of high-quality HVAC equipment and cleanroom technology, also providing turnkey projects for industries requiring cleanroom solutions |
240 | |||
| 27 |
DOK-INGdok-ing.hr
An innovative engineering powerhouse specializing in heavy-duty robotics and autonomous systems for various industries worldwide |
202 | |||
| 28 |
Faculty of Transport and Traffic Sciencesfpz.unizg.hr
Higher education institution specializing in transportation, logistics, and aeronautics training, fostering independent thinking, problem-solving skills, and professional values in students |
202 | |||
| 29 | 199 | ||||
| 30 |
Rimac Automobilirimac-automobili.com
A leading electric hypercar brand designing, engineering, and producing high-performance vehicles, with a focus on electric propulsion systems for sports cars |
190 | |||
| 31 |
Juraj Dobrila University of Pulaunipu.hr
The organization offers a wide range of high-quality study programs in various fields, focusing on innovation, research, international collaboration, and a vibrant student life experience |
185 | |||
| 32 |
Visage Technologiesvisagetechnologies.com
Specializing in face tracking, analysis, and recognition solutions for various industries, including automotive, security, retail, and marketing research Providing advanced technology and real-time virtual makeup try-on |
176 | |||
| 33 |
HS Produkths-produkt.hr
Leading manufacturer with 30 years experience in top-quality small arms production, known for advanced thinking and international success in the pistol line |
166 | |||
| 34 | 158 | ||||
| 35 |
Emil Frey Digital d.o.o.emilfreydigital.com
Development of innovative automotive technology products including web applications, AI, IoT, data integration, and CRM to support automotive group operations. |
147 | |||
| 36 |
Biogaz Vallée®biogazvallee.com
National professional association unifying, animating, and supporting the biomethanization, hydrothermal gasification, and biogenic CO2 sectors to accelerate development and increase value creation. |
13 | |||
| 37 |
POD d.o.o.pod.hr
A third-generation family owned company established in 1971, specializing in the production of springs and components with a focus on quality and export |
6 | |||
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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 12, 2026.
More company lists in Croatia
- The largest companies in Croatia 314
- Multinational companies in Croatia 75
- Retail chains in Croatia 40
- Public sector organisations in Croatia 36
- Manufacturers in Croatia 36
- Critical infrastructure operators in Croatia 34
- Companies with a mobile app in Croatia 33
- Financial services firms in Croatia 31
- Software Development companies in Croatia 27
- IT services companies in Croatia 27
- Higher Education companies in Croatia 25