# 50 leading companies with in-house R&D in Greece
Tamtam tracks 83 companies with in-house R&D headquartered in Greece. This list ranks the 50 largest by number of employees on LinkedIn, led by Aristotle University of Thessaloniki (AUTH), Kaizen Gaming and University of Patras. Their median headcount is 649. Half of them were founded in 1983 or later. The most common headquarters are Athens (17), Marousi (3) and Thessaloniki (2).
These Greek companies with in-house R&D are primarily large organizations, including several prominent universities and established pharmaceutical manufacturers. Among them, Aristotle University of Thessaloniki is a major educational institution, Kaizen Gaming is a GameTech company, FAMAR specializes in pharmaceutical contract manufacturing, and Frigoglass is a global leader in ice cold merchandisers. Intracom Telecom provides telecommunications systems, and DEMO Pharmaceuticals S.A. focuses on pharmaceutical products.
A notable pattern is the strong presence of higher education institutions, with five universities among the largest companies listed. This indicates a significant investment in academic research and development within Greece. The pharmaceutical manufacturing sector also features prominently, with multiple large firms contributing to R&D activities.
π¬π· Greece Β· 50 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Aristotle University of Thessaloniki (AUTH)](https://www.tamtam.ai/c/aristotle-university-of-thessaloniki-auth) (auth.gr)
A large university in Greece with 10 faculties, 40 schools, and over 73,000 students offers undergraduate, postgraduate, and doctoral programs | Higher Education | π¬π· Thessaloniki | 3,342 | 1925 |
| 2 | [Kaizen Gaming](https://www.tamtam.ai/c/kaizen-gaming) (careers.kaizengaming.com)
A rapidly growing GameTech company operating in 13 countries, focused on technology and providing trusted online gaming experiences to customers worldwide | Entertainment Providers | π¬π· Athens | 3,249 | |
| 3 | [University of Patras](https://www.tamtam.ai/c/university-of-patras) (upatras.gr)
Public university offering diverse academic programs, extensive research facilities, and recognized excellence in science, technology, health, and environment. | Higher Education | π¬π· Patra | 3,116 | 1964 |
| 4 | [University of Thessaly](https://www.tamtam.ai/c/university-of-thessaly) (uth.gr)
Promoting scientific knowledge and research, offering undergraduate and postgraduate programs, contributing to local community and societal development through education | Higher Education | π¬π· Volos | 2,162 | 1984 |
| 5 | [National & Kapodistrian University of Athens](https://www.tamtam.ai/c/national-and-kapodistrian-university-of-athens) (en.uoa.gr)
A prestigious public university in Athens, Greece, offering a wide range of academic programs and conducting extensive research in various fields | Higher Education | π¬π· Athens | 2,094 | 1837 |
| 6 | [FAMAR](https://www.tamtam.ai/c/famar) (famar-group.com)
European contract manufacturing and development partner specializing in pharmaceutical and healthcare products, offering flexible solutions from development to distribution. | Pharmaceutical Manufacturing | π¬π· Athens | 1,898 | 1949 |
| 7 | [Frigoglass](https://www.tamtam.ai/c/frigoglass) (frigoglass.com)
Global leader in ice cold merchandisers and glass packaging, providing bespoke coolers and sustainable refrigeration solutions to beverage brands worldwide | Appliances, Electrical, and Electronics Manufacturing | π¬π· Athens | 1,743 | 1996 |
| 8 | [University of Athens](https://www.tamtam.ai/c/university-of-athens) (uoa.gr)
Oldest university in Southeast Europe, established in 1837, offering a wide range of educational programs and ranked 200th in the world | Research Services | π¬π· Athens | 1,098 | 1837 |
| 9 | [Intracom Telecom](https://www.tamtam.ai/c/intracom-telecom) (intracom-telecom.com)
Global provider of technology systems and solutions specializing in fixed wireless access, 5G/4G innovation, IoT, SDN/NFV, Big Data analytics, Smart City solutions, and defense systems | Telecommunications | π¬π· Peania | 1,065 | 1977 |
| 10 | [DEMO Pharmaceuticals S.A.](https://www.tamtam.ai/c/demo-pharmaceuticals-s-a) (demo.gr)
A Greek organization specializing in pharmaceutical products, supplying injectables to public hospitals, exporting globally, and investing in R&D and active ingredients development | Pharmaceutical Manufacturing | π¬π· Krioneri | 1,045 | |
| 11 | [University of West Attica](https://www.tamtam.ai/c/university-of-west-attica) (uniwa.gr)
Provides higher education through various departments, offering undergraduate and postgraduate studies, fostering research and collaboration in Greece. | Higher Education | π¬π· Aigaleo | 1,011 | 2018 |
| 12 | [Pharmathen](https://www.tamtam.ai/c/pharmathen) (pharmathen.com)
Pharmathen is a global pharmaceutical company focused on developing innovative drug delivery technologies, with a diverse product portfolio and commitment to improving patient lives | Pharmaceutical Manufacturing | π¬π· Marousi | 1,004 | 1969 |
| 13 | [Elpen Pharmaceutical Co. Inc.](https://www.tamtam.ai/c/elpen-pharmaceutical-co-inc) (elpen.gr)
A Greek pharmaceutical manufacturer specializing in product development across multiple technologies and therapeutic areas, with a global mission to enhance patients' lives | Pharmaceutical Manufacturing | π¬π· Pikermi | 916 | 1965 |
| 14 | [scania](https://www.tamtam.ai/c/scania) (scania.com)
Specializing in transportation and vehicle manufacturing, the company operates in the southernmost province of Sweden with a focus on population and culture | Truck Transportation | π¬π· Athens | 876 | 1821 |
| 15 | [Hellenic Aerospace Industry S.A. (EAB)](https://www.tamtam.ai/c/hellenic-aerospace-industry-s-a-eab) (haicorp.com)
Delivers comprehensive defense and aerospace services, manufacturing products for military and civil markets while partnering with global industries for high performance solutions. | Aviation and Aerospace Component Manufacturing | π¬π· Schimatari | 846 | 1975 |
| 16 | [EUROPEAN DYNAMICS](https://www.tamtam.ai/c/european-dynamics) (eurodyn.com)
Design, develop, support, and operate complex IT systems and software products tailored for eGovernment activities across multiple countries. | IT Services and IT Consulting | π¬π· Marousi | 843 | 1993 |
| 17 | [Coffee Island](https://www.tamtam.ai/c/coffee-island) (coffeeisland.gr)
Sustainability-focused global coffee chain operating over 460 stores across four continents. In-house bean processing, quality control, extensive franchise network. | Food and Beverage Services | π¬π· Patra | 810 | 1999 |
| 18 | [Ethnikon kai Kapodistriakon Panepistimion Athinon](https://www.tamtam.ai/c/ethnikon-kai-kapodistriakon-panepistimion-athinon) (uoa.gr)
A prestigious educational institution in Greece offering valuable services to Greek citizens worldwide since its founding in 1837 | Higher Education | π¬π· Athens | 807 | 1837 |
| 19 | [Alumil](https://www.tamtam.ai/c/alumil) (alumil.com)
Leading aluminium extrusion group in South-East Europe, specializing in production and distribution of architectural aluminium systems with advanced facilities and extensive product range | Wholesale Building Materials | π¬π· N. Efkarpia | 789 | 1988 |
| 20 | [Titan Cement Company SA](https://www.tamtam.ai/c/titan-cement-company-sa) (titan.gr)
Innovative provider of construction materials and solutions for safe and sustainable homes, buildings, and infrastructure with a focus on low-carbon operations | Wholesale Building Materials | π¬π· Athens | 786 | 1902 |
| 21 | [VIANEX SA](https://www.tamtam.ai/c/vianex-sa) (vianex.gr)
A leading pharmaceutical industry pioneer in Greece with over 95 years of experience, providing high-quality products and services globally | Pharmaceutical Manufacturing | π¬π· Nea Erythrea | 727 | 1971 |
| 22 | [KLEEMANN](https://www.tamtam.ai/c/kleemann) (kleemannlifts.com)
A leading European manufacturer of lifts, escalators, and parking systems, known for innovative design, fast delivery, and a strong focus on customer and employee satisfaction | Machinery Manufacturing | π¬π· Kilkis | 682 | 1983 |
| 23 | [International Hellenic University](https://www.tamtam.ai/c/international-hellenic-university) (ihu.gr)
An educational institution offering postgraduate programs in various fields with campuses across different cities in Greece | Higher Education | π¬π· Thessaloniki | 663 | 2005 |
| 24 | [University of Western Macedonia](https://www.tamtam.ai/c/university-of-western-macedonia) (uowm.gr)
An educational institution offering a wide range of courses and programs in multiple cities in Western Macedonia | Higher Education | π¬π· Kozani | 662 | 2004 |
| 25 | [Sunlight Group](https://www.tamtam.ai/c/sunlight-group) (the-sunlight-group.com)
Development and production of lead-acid and lithium-ion batteries for industrial mobility, leisure, and renewable energy storage systems worldwide. | Renewable Energy Semiconductor Manufacturing | π¬π· Kifisia | 649 | 1991 |
| 26 | [Asso.subsea](https://www.tamtam.ai/c/asso-subsea) (assogroup.com)
Provides technology-driven subsea equipment and services for underwater protection of flexible pipelines and cables, offering tailor-made solutions with maintained equipment and experienced personnel. | Maritime | π¬π· Elefsina | 627 | 1976 |
| 27 | [SPACE HELLAS S.A.](https://www.tamtam.ai/c/space-hellas-s-a) (space.gr)
Comprehensive ICT and security solutions provider offering infrastructure, telecom, cloud, unified communications, and physical security services with global partnerships. | IT Services and IT Consulting | π¬π· Agia Paraskevi | 520 | 1985 |
| 28 | [Foundation for Research and Technology - Hellas (FORTH)](https://www.tamtam.ai/c/foundation-for-research-and-technology-hellas-forth) (forth.gr)
A leading research foundation in Greece with multiple institutes focusing on various fields such as electronics, biology, mathematics, and genomics | Research Services | π¬π· Heraklion | 495 | 1983 |
| 29 | [RAFARM S.A.](https://www.tamtam.ai/c/rafarm-s-a) (rafarmgroup.gr)
Innovative pharmaceutical organization investing in R&D, developing a diverse product portfolio, with a strong focus on quality, expertise, and global expansion | Pharmaceutical Manufacturing | π¬π· Athens | 473 | 1974 |
| 30 | [Qualco Group](https://www.tamtam.ai/c/qualco-group) (qualco.group)
Innovative technology solutions empower individuals in finance, property, and digital fields, creating better financial well-being and transforming businesses | Software Development | π¬π· Athens | 469 | 1998 |
| 31 | [Cornell Ann S. Bowers College of Computing and Information Science](https://www.tamtam.ai/c/cornell-ann-s-bowers-college-of-computing-and-information-science) (bowers.cornell.edu)
Leading academic departments in Computer Science, Information Science, and Statistics/Data Science, driving innovation and collaboration across disciplines at Cornell University | Higher Education | π¬π· Ithaca | 421 | 1978 |
| 32 | [ELVAL](https://www.tamtam.ai/c/elval) (elval.com)
Designing, manufacturing, and recycling aluminum solutions for packaging, transport, automotive, and construction markets, with focus on sustainable production and R&D. | Fabricated Metal Products | π¬π· | 414 | 1973 |
| 33 | [ETEM](https://www.tamtam.ai/c/etem) (etem.com)
A leading designer and producer of architectural systems and aluminum profiles for various applications, focusing on innovation, quality, and sustainability globally | Wholesale Building Materials | π¬π· Magoula | 405 | 1971 |
| 34 | [PharOS Ltd](https://www.tamtam.ai/c/pharos-ltd) (pharosgr.gr)
This company develops and supplies pharmaceutical products like generics, OTCs, and FDCs, also offering product development, regulatory affairs, and business consulting services. | Pharmaceutical Manufacturing | π¬π· Metamorfossi | 397 | 2002 |
| 35 | [INTRACOM DEFENSE](https://www.tamtam.ai/c/intracom-defense) (intracomdefense.com)
Leader in electronic defense products, specializing in communication systems for military use Designs and manufactures cutting-edge technology for defense ministries, NATO, and security services | Defense and Space Manufacturing | π¬π· Athens | 384 | |
| 36 | [DELTA FOODS SA](https://www.tamtam.ai/c/delta-foods-sa) (delta.gr)
A leading dairy producer in Greece, specializing in a variety of dairy products and juices, with a focus on quality, innovation, and international expansion | Food and Beverage Manufacturing | π¬π· Γyios StΓ©fanos | 381 | 1952 |
| 37 | [KORRES](https://www.tamtam.ai/c/korres) (korres.com)
A Greek beauty brand that focuses on natural ingredients, research, and sustainability to create safe and effective plant-powered beauty products globally | Personal Care Product Manufacturing | π¬π· Metamorfosi | 380 | 1996 |
| 38 | [ISOMAT](https://www.tamtam.ai/c/isomat) (isomat.eu)
A multinational specializing in building chemicals, mortars, and paints with a wide range of high-quality products for various construction projects worldwide | Chemical Manufacturing | π¬π· Thessaloniki - Ag. Athanasios | 347 | 1980 |
| 39 | [Genepharm SA](https://www.tamtam.ai/c/genepharm-sa) (genepharm.com)
Manufacturer of high-quality generic pharmaceutical products, with a focus on conventional and oncological formulations Operating internationally in over 90 countries | Pharmaceutical Manufacturing | π¬π· Pallini | 338 | 1971 |
| 40 | [UNI-PHARMA Pharmaceutical Laboratories S.A.](https://www.tamtam.ai/c/uni-pharma-pharmaceutical-laboratories-s-a) (uni-pharma.gr)
Innovative pharmaceutical company dedicated to advancing healthcare through high-quality products, partnerships, and a commitment to growth and success | Pharmaceutical Manufacturing | π¬π· Kifisia | 304 | |
| 41 | [Centrale MΓ©diterranΓ©e](https://www.tamtam.ai/c/centrale-mediterranee) (centrale-mediterranee.fr)
A dynamic school offering top-notch engineering education, fostering innovation, international collaboration, and personal growth through diverse extracurricular opportunities | Higher Education | π¬π· Marseille | 262 | 2006 |
| 42 | [Profile Software](https://www.tamtam.ai/c/profile-software) (profilesw.com)
An award-winning solutions provider offering market-proven tools for Investment Management and Banking industries worldwide to align business and IT strategies | Software Development | π¬π· Athens | 258 | 1993 |
| 43 | [InterMed Pharmaceutical Laboratories S.A.](https://www.tamtam.ai/c/intermed-pharmaceutical-laboratories-s-a) (intermed.com.gr)
Specializing in innovative skincare, para-pharmaceutical, and pharmaceutical products to address everyday and specialized health conditions for the modern individual in domestic and international markets | Pharmaceutical Manufacturing | π¬π· Athens | 229 | 1996 |
| 44 | [UBITECH](https://www.tamtam.ai/c/ubitech) (ubitech.eu)
A leading provider of innovative technical solutions, consulting services, and IT integration for businesses, organizations, and governments worldwide | IT Services and IT Consulting | π¬π· Athens | 186 | 2005 |
| 45 | [WinMedica Pharmaceutical](https://www.tamtam.ai/c/winmedica-pharmaceutical) (winmedica.gr)
A healthcare organization based in Athens, Greece, focused on enhancing patient care in key therapeutic sectors through global pharmaceutical collaborations and upcoming manufacturing facility in Tripoli | Pharmaceutical Manufacturing | π¬π· Marousi | 183 | 2008 |
| 46 | [IKNOWHOW SA](https://www.tamtam.ai/c/iknowhow-sa) (iknowhow.com)
Greek technology firm providing tailor-made software solutions, ICT strategy consulting, digital government, e-Health, and robotics services, with a strong focus on digital transformation and information security | Software Development | π¬π· Athens | 147 | 2002 |
| 47 | [Kenotom - Embedded Engineering Excellence](https://www.tamtam.ai/c/kenotom-embedded-engineering-excellence) (kenotom.com)
Engineering services provider specializing in firmware development, test automation, control solutions, electronics design, and project management for automotive, industrial automation, aviation, and medical sectors | Embedded Software Products | π¬π· Kalamaria | 145 | 2014 |
| 48 | [Gerolymatos International](https://www.tamtam.ai/c/gerolymatos-international) (gerolymatos-international.com)
A family-owned healthcare company based in Greece, focusing on development, manufacturing, and distribution of products globally through partnerships and affiliates | Pharmaceutical Manufacturing | π¬π· Athens | 138 | 1923 |
| 49 | [Papoutsanis SA](https://www.tamtam.ai/c/papoutsanis-sa) (papoutsanis.gr)
A leading Greek manufacturer of bar soap, hotel amenities, and personal care products with a strong presence in Greece and international markets | Manufacturing | π¬π· Vathi Avlidos | 138 | 1870 |
| 50 | [PHARMAZAC SA](https://www.tamtam.ai/c/pharmazac-sa) (pharmazac.gr)
A fast-growing pharmaceutical company with divisions in logistics, generics, R&D, and radio-pharmaceuticals, investing in new manufacturing facilities and seeking talent | Pharmaceutical Manufacturing | π¬π· Athens | 129 | 1986 |
## 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 Greece
- [The largest companies in Greece](https://www.tamtam.ai/l/largest-companies-greece) (778)
- [Multinational companies in Greece](https://www.tamtam.ai/l/multinational-companies-greece) (217)
- [Manufacturers in Greece](https://www.tamtam.ai/l/manufacturers-greece) (92)
- [Retail chains in Greece](https://www.tamtam.ai/l/retail-chains-greece) (78)
- [Critical infrastructure operators in Greece](https://www.tamtam.ai/l/critical-infrastructure-operators-greece) (73)
- [Consumer goods companies in Greece](https://www.tamtam.ai/l/consumer-goods-companies-greece) (57)
- [Pharmaceutical Manufacturing companies in Greece](https://www.tamtam.ai/l/pharmaceutical-manufacturing-companies-greece) (55)
- [Education providers in Greece](https://www.tamtam.ai/l/education-companies-greece) (54)
- [Companies with a mobile app in Greece](https://www.tamtam.ai/l/companies-with-mobile-app-greece) (50)
- [Corporate groups and holding companies in Greece](https://www.tamtam.ai/l/holding-companies-greece) (49)
- [Public sector organisations in Greece](https://www.tamtam.ai/l/public-sector-organisations-greece) (49)
- [Financial services firms in Greece](https://www.tamtam.ai/l/financial-services-firms-greece) (48)
- [Pharmaceutical companies in Greece](https://www.tamtam.ai/l/pharmaceutical-companies-greece) (48)
- [Food and beverage companies in Greece](https://www.tamtam.ai/l/food-and-beverage-companies-greece) (47)
- [Food and Beverage Manufacturing companies in Greece](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-greece) (44)
- [Distributors and wholesalers in Greece](https://www.tamtam.ai/l/distributors-and-wholesalers-greece) (43)
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- [Publicly traded companies in Greece](https://www.tamtam.ai/l/publicly-traded-companies-greece) (37)
- [Logistics companies in Greece](https://www.tamtam.ai/l/logistics-companies-greece) (36)
- [E-commerce companies in Greece](https://www.tamtam.ai/l/ecommerce-companies-greece) (34)
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Source: https://www.tamtam.ai/l/r-and-d-companies-greece