This selection of large companies in Athens primarily features significant players in the financial services, telecommunications, and utilities sectors. Companies like OTE Group of Companies, Eurobank, Piraeus, and National Bank of Greece stand out with substantial employee numbers, indicating their established presence and broad operations. These are predominantly large, well-established firms rather than young companies.
A notable pattern among these companies is their long history, with several founded in the 19th or early 20th century. National Bank of Greece, for example, was founded in 1841, and Piraeus in 1916. This suggests a landscape dominated by institutions that have evolved over many decades, contributing to the stability and maturity of the Athenian business environment.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
OTE Group of Companies (HTO)cosmote.gr
A leading technology company in Greece, part of Deutsche Telekom Group, providing a wide range of telecom services and ICT solutions for digital transformation and growth |
7,648 | |||
| 2 |
Eurobankeurobank.gr
A strong financial organization offering a wide range of products and services in banking and financial sectors, focusing on social responsibility and sustainability |
6,916 | |||
| 3 |
Piraeuspiraeusholdings.gr
Leading Greek bank offering diverse financial products, extensive distribution, supporting economic recovery, agriculture, investment banking, leasing, shipping finance, and energy transition financing. |
6,122 | |||
| 4 |
National Bank of Greecenbg.gr
A bank with a rich history and a promising future, offering stability, expertise, digital services, and a strong presence in Greece and abroad |
5,473 | |||
| 5 |
Alpha Bankalpha.gr
Enabling progress in life and business through integrated finance, supporting businesses in the green and digital economy, fostering inclusive progress for people and communities. |
5,173 | |||
| 6 |
PPC S.A.ppcgroup.com
Leading Greek electric utility in power generation, distribution, and supply, focusing on decarbonization, digitalization, renewables, and customer-centric growth, with significant market presence and assets |
2,980 | |||
| 7 | 2,894 | ||||
| 8 |
INTERAMERICANinteramerican.gr
Leading insurance provider in Greece with over 50 years of experience, offering a wide range of innovative products and services to individual and corporate customers |
1,598 | |||
| 9 |
Ethniki Asfalistikiethnikiasfalistiki.gr
With over a century of experience, we provide innovative insurance products and services to safeguard what matters most to individuals |
1,380 | |||
| 10 | 1,355 | ||||
| 11 |
WIND Hellasnova.gr
A dynamic telecommunications company in Europe investing in ultra-high-speed networks, fiber optic technology, and enhancing Greek market competitiveness through strategic partnerships |
520 | |||
| 12 |
Hondos Centerhondoscenter.com
A leading beauty and fashion retail network in Greece with 74 stores and an eCommerce platform, offering a wide range of cosmetics, fashion, and accessories |
439 | |||
| 13 | 405 | ||||
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. | |||||
| 14 |
ELTA Hellenic Post SAelta.gr
The largest postal services provider in Greece with a vast logistics and retail network, employing over 3,200 staff and operating 1,200 access points |
405 | |||
| 15 |
Attica Bankcrediabank.com
Dynamic financial services provider in Greece with 37 branches, offering banking and investment products for individuals, SMEs, and large companies |
336 | |||
| 16 |
Hellenic Train S.A.hellenictrain.gr
Specializing in passenger and freight rail transport, combined transport, bus services, logistics, and consulting with a focus on safety and quality |
319 | |||
| 17 |
Gregory's Food Service Group S.A.gregorys.gr
Established in 1972, we operate over 350 stores in Greece, Germany, Romania, and Cyprus, providing delicious experiences to 250,000 daily customers |
284 | |||
| 18 |
Engel & Völkers Greeceengelvoelkers.com
With 40 years of experience, we offer global residential property brokerage services, focusing on professionalism, customer service, and client loyalty |
213 | |||
| 19 |
Media Markt Hellaspublic.gr
We are transferring 530 employees to "Public + home" and Publicgr while maintaining our services and commitment to our customers |
211 | |||
| 20 |
PETSUPERMARKET A.E.petsupermarket.gr
Specializing in pet products for 30 years, focusing on retail sales in the last 5 years to provide consumers with the best prices through direct importation |
190 | |||
| 21 |
iRepair Greeceirepair.gr
A rapidly growing repair service provider with a national presence, offering affordable and high-quality repairs with a focus on customer satisfaction |
184 | |||
| 22 |
GrandOptical Greecegrandoptical.gr
A leading eye care provider in Greece and Cyprus, offering high-quality services, prescription glasses, contact lenses, and sunglasses with exceptional customer service |
125 | |||
| 23 |
Nespresso Business Solutions Greecenespresso-pro.gr
The company provides high-quality coffee solutions tailored to business needs, focusing on sustainability, innovation, and respecting both customers and coffee producers |
121 | |||
| 24 |
Electronet S.A.electronet.gr
A successful network of entrepreneurs in consumer electronics and electrical products, providing certified branded appliances and technology devices with exceptional customer service |
83 | |||
| 25 |
Eurobank Ergasias SAeurobank.gr
A leading Greek bank offering a wide range of financial products and services to individuals and businesses, with operations across several European countries |
73 | |||
| 26 |
Decathlon Greecedecathlon.com.gr
A global sports retailer with a mission to make sports accessible to all, with stores in over 52 countries and a strong focus on innovation and community engagement |
40 | |||
| 27 |
Καφεκοπτεία Λουμίδη | Kafekopteia Loumidikafekopteialoumidi.gr
Family business offers freshly ground coffee varieties and traditional Greek gourmet flavors through retail and wholesale networks, upholding a century-old tradition. |
32 | |||
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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 Athens
- The largest companies in Athens 271
- Multinational companies in Athens 74
- Critical infrastructure operators in Athens 35
- Financial services firms in Athens 31