| # | Company | Employees |
|---|---|---|
| 1 |
PwC Greecepwc.com
Global network providing assurance, advisory, and tax services focused on building trust and solving important societal problems. |
2,088 |
| 2 |
Ministry of Education, Research and Religious Affairsminedu.gov.gr
An organization focused on overseeing education, research, and religious affairs within Greece, striving to enhance and support these critical sectors |
1,277 |
| 3 |
AVAX GROUPavax.gr
A leading Greek construction group listed on Athens Stock Exchange, specializing in infrastructure, MEP works, international projects, real estate, and more |
1,254 |
| 4 |
Germanosgermanos.gr
Leading retail technology provider in Greece, offering digital communication and entertainment products, connectivity solutions, and services through a customer-centric approach |
1,198 |
| 5 |
Pharmathenpharmathen.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 |
1,004 |
| 6 |
EUROPEAN DYNAMICSeurodyn.com
Design, develop, support, and operate complex IT systems and software products tailored for eGovernment activities across multiple countries. |
843 |
| 7 |
J&P- AVAX S.A.avax-sa.gr
A multinational group with a strong presence in 15 countries, specializing in various projects with a focus on growth and acquisition opportunities |
815 |
| 8 | 791 | |
| 9 |
Optima bankoptimabank.gr
A contemporary financial institution offering flexible products and services, founded in 2019 and further capitalized through share increases and convertible bond loans |
682 |
| 10 |
LAMDA Development S.A.lamdadev.com
Specializing in real estate development, investment, and management in Greece and South-Eastern Europe, with a focus on retail, office, and residential sectors |
643 |
| 11 |
ΜΗΤΕΡΑ / Mitera Hospitalmitera.gr
The largest private hospital in Greece offering comprehensive healthcare services for mothers, children, and families for over 30 years |
579 |
| 12 |
OB Streemob-streem.com
A global leader in seamless cargo solutions, leveraging advanced technology for end-to-end movement and shaping the future of logistics and supply chain management |
393 |
| 13 |
Athena Research Centerathenarc.gr
Leading research center specializing in information, communication, and knowledge technologies, fostering innovation, and promoting lifelong learning and technological cluster formation |
321 |
| 14 |
Hellenic Fire Corps Official Πυροσβεστικό Σώμα Ελλάδαςfireservice.gr
Official page providing updates and useful information for the Hellenic Fireservice Not monitored 24/7 For emergencies, dial 199 or 112 |
291 |
| 15 |
WinMedica Pharmaceuticalwinmedica.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 |
183 |
| 16 | 183 | |
| 17 |
Doukas Schooldoukas.edu.gr
A school providing modern education with traditional values, prioritizing student, parent, and community satisfaction, and focusing on global citizen development |
183 |
| 18 |
Motodynamics Groupmotodynamics.gr
Official distributor for Yamaha, Porsche, and Sixt in multiple countries Listed on the Athens Stock Exchange since 2005 Offers various products and services in transportation sector |
182 |
| 19 |
MORE (Motor Oil Renewable Energy)more-energy.gr
A subsidiary of the Motor Oil Group, this company is a major player in clean energy production, with a focus on renewable energy sources |
179 |
| 20 |
ELPEDISON S.A.enerwave.gr
Independent energy producer supplying alternative electricity in Greece with a focus on natural gas and environmentally friendly practices, offering competitive products and high-quality customer service |
167 |
| 21 |
Hellenic Basketball Federationbasket.gr
The organization oversees Greek basketball, including national teams and clubs, organizing championships and tournaments, and achieving multiple successes at European and world levels |
164 |
| 22 |
Aegean Baltic Bank S.A.aegeanbalticbank.com
A privately owned bank established in Greece, specializing in financing for shipping, corporate finance, trade finance, renewable energy, real estate, and private banking |
107 |
| 23 |
Servier Hellasservier.gr
A global pharmaceutical group focused on research, innovation, and patient well-being in cardiovascular, oncology, immunoinflammatory, and neurodegenerative diseases |
57 |
| 24 |
nvisionistnvisionist.com
Development of AI-powered digital technology solutions for renewable energy, safety systems, computer vision, and large-scale project management. |
37 |
| 25 |
Syntheticasynthetica.ai
A data science company creating customized software solutions to enhance workflow efficiency and productivity for businesses |
23 |
| 26 |
BibeCoffeebibecoffee.com
Leading independent telemetry platform for coffee chains and roasters to connect machines to the cloud, standardizing quality and streamlining operations. |
21 |
| 27 |
OHB Hellasohb-hellas.gr
Innovative space engineering company in Greece, collaborating with leading partners to design and deliver sustainable space-based solutions using cutting-edge technology |
17 |
| 28 |
KM Cube Asset Managementkm3am.com
Asset management company providing sophisticated investment services to private investors and institutions, led by experienced professionals with a successful track record in the industry |
16 |
| 29 |
Joltiejoltie.com
A cutting-edge eMobility service providing seamless EV charging experiences with easy payment options and top-notch support for a cleaner future journey |
15 |
| 30 |
SAFE ADVISORS Investment Services S.A.safe-gr.com
The company offers impartial expert advice and execution services, focusing on sophisticated advising with access to high-standard products and a global network of professionals |
11 |
| 31 |
EV Loaderevloader.com
The company specializes in managing electric vehicle charging stations efficiently and utilizing solar energy through technology applications |
10 |
| 32 |
global developmentglobaldevelopment.eu
A European company specializing in developing and manufacturing generic medicines, providing expertise in product development, regulatory services, and innovative solutions for pharmaceutical companies worldwide |
7 |
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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 Oct 24, 2026.