This selection of large corporate groups in Greece shows a strong presence of companies in banking, construction, and retail. Among them are Piraeus, a leading Greek bank, and National Bank of Greece, another prominent bank. PPC S.A. is a major electric utility, while ΣΚΛΑΒΕΝΙΤΗΣ specializes in food and consumer goods retail. GEK TERNA Group focuses on infrastructure and energy, and OPAP is a key player in gaming. Most of these companies, such as Elpen Pharmaceutical Co. Inc. and Mellon Group, operate across various sectors, indicating a diverse economic landscape.
A notable pattern is the concentration of headquarters in Athens, with several companies like Piraeus, National Bank of Greece, and PPC S.A. based there. Other significant locations include Marousi, home to AVAX GROUP, and Piraeus, where Mellon Group and GasLog Ltd. are located. The founding dates span from the mid-19th century for National Bank of Greece to the early 2000s for companies like Public Group and GasLog Ltd., suggesting a mix of established and more recently developed large enterprises.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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 | |||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 |
Aktor Groupintrakat.gr
A leading international infrastructure provider offering construction, photovoltaic parks, quarry management, technical facilities, and project management services with extensive experience and expertise |
1,546 | |||
| 5 |
ΣΚΛΑΒΕΝΙΤΗΣsklavenitis.gr
A Greek business specializing in retailing food, consumer goods, and durable goods, with a history dating back to 1954 |
1,496 | |||
| 6 |
GEK TERNA Group of Companiesgekterna.com
A leading business group in Greece with a global presence, specializing in infrastructure, energy production, waste management, and real estate development |
1,476 | |||
| 7 | 1,355 | ||||
| 8 |
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 | |||
| 9 |
Public Grouppublic.gr
A platform-based retailer in Greece and Cyprus offering a wide range of household electronics and entertainment products through physical stores and online platforms |
1,068 | |||
| 10 |
Mellon Groupmellongroup.com
Multinational group providing technology solutions and outsourced services to organizations in consumer business, financial, utilities, telecom, and retail sectors |
1,040 | |||
| 11 |
ΥΓΕΙΑ / Hygeia Hospitalhygeia.gr
A leading private hospital in Greece, established in 1974, providing high-quality health services and developing an integrated network of healthcare both locally and internationally |
918 | |||
| 12 |
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 |
916 | |||
| 13 |
EUROPEAN DYNAMICSeurodyn.com
Design, develop, support, and operate complex IT systems and software products tailored for eGovernment activities across multiple countries. |
843 | |||
| 14 |
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 | |||
| 15 |
GasLog Ltd.gaslogltd.com
Global provider of LNG shipping services, emphasizing safety, efficiency, and reliability Committed to improving vessel lifecycle and charter processes |
814 | |||
| 16 |
Sarantis Groupsarantisgroup.com
A multinational consumer products group with a 50-year history, offering personal care, home care, health care products, luxury cosmetics, and recognized brands globally |
802 | |||
| 17 |
Alumilalumil.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 |
789 | |||
| 18 |
Titan Cement Company SAtitan.gr
Innovative provider of construction materials and solutions for safe and sustainable homes, buildings, and infrastructure with a focus on low-carbon operations |
786 | |||
| 19 |
EPSILONNETepsilonnet.gr
A group of companies dedicated to IT, digital content development, and vocational training, leading the digital transformation of Greek enterprises |
777 | |||
| 20 |
Sani/Ikos Groupikosresorts.com
Luxury beachfront resorts offering personalized hospitality, cultural experiences, sustainable tourism, and career development across Mediterranean coastal destinations. |
736 | |||
| 21 |
IPTO-Independent Power Transmission Operatoradmie.gr
This organization in Greece operates as the Transmission System Operator ensuring reliable electricity supply, market operation, and infrastructure development |
734 | |||
| 22 |
PPC Renewables - ΔΕΗ Ανανεώσιμεςppcr.gr
Specializing in renewable energy production, this subsidiary of Greece's largest power generation company focuses on wind, solar, hydro, geothermal, and biomass energy |
682 | |||
| 23 |
Sunlight Groupthe-sunlight-group.com
Development and production of lead-acid and lithium-ion batteries for industrial mobility, leisure, and renewable energy storage systems worldwide. |
649 | |||
| 24 |
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 | |||
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. | |||||
| 25 | 625 | ||||
| 26 |
Interunity Groupinterunity.com
Leading service provider to the maritime industry, fostering emergence through a family of companies united by shared drive and philosophy |
597 | |||
| 27 |
Skroutzskroutz.gr
Leading e-commerce platform in Greece, offering a seamless shopping experience for 35M+ users with access to 12K+ online shops Passionate about innovative software solutions |
536 | |||
| 28 |
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. |
520 | |||
| 29 |
Antenna Groupantenna-group.com
An international media and entertainment organization with diverse assets in television, radio, digital, music, and publishing, maximizing shareholder value globally |
519 | |||
| 30 |
Attica Groupattica-group.com
Leading passenger-shipping group in Greece and the Mediterranean with a modern fleet, serving 63 destinations and reaching 76 ports in Greece and Italy |
509 | |||
| 31 |
Qualco Groupqualco.group
Innovative technology solutions empower individuals in finance, property, and digital fields, creating better financial well-being and transforming businesses |
469 | |||
| 32 |
Mellon Technologiesmellongroup.com
Provider of hardware and software solutions, telemarketing/helpdesk services, and business process management for organizations in consumer-focused industries Founded in 1994 |
448 | |||
| 33 |
Thrace Groupthracegroup.com
A global leader in converting polypropylene and polyethylene into innovative technical fabrics and packaging solutions, aligned with EU's circular economy strategy |
408 | |||
| 34 |
Angelicoussis Groupangelicoussisgroup.com
A privately owned group of shipping companies with a large fleet serving oil, gas, and dry cargo markets in a safe and environmentally sustainable manner |
372 | |||
| 35 | 347 | ||||
| 36 |
Latsco Marine Managementlatsco.com
With over 70 years of experience, this organization operates a fleet of tankers, LPG carriers, and LNG carriers, prioritizing excellence and customer satisfaction |
346 | |||
| 37 |
FF OpsCoffopsco.com
Designs, manufactures, and distributes jewelry, watches, and accessories internationally Operates fashion, retail, beauty, and holding companies across multiple brands and sectors |
343 | |||
| 38 |
Attica Bankcrediabank.com
Dynamic financial services provider in Greece with 37 branches, offering banking and investment products for individuals, SMEs, and large companies |
336 | |||
| 39 |
Hellenic Duty Free Shopsshopdutyfree.com
A leading Greek travel retail operator with a network of 111 shops offering duty paid and duty free products at exit points in Greece |
315 | |||
| 40 |
Signalthesignalgroup.com
A shipping services group offering ship management, innovative software technology, and strategic investments in the shipping and oil industry |
249 | |||
| 41 |
Saracakis Group of Companiessaracakis.gr
A distributor of automotive and machinery products from top global brands, focused on delivering innovative solutions and exceptional customer experiences |
240 | |||
| 42 |
FOURLIS Group of Companiesfourlis.com
Operating retail franchises for home furnishings, sporting goods, and health/wellness, also investing in real estate, retail parks, and omnichannel logistics. |
249 | |||
| 43 |
Neptune Group of Companiesneptunelines.com
A top provider of transportation services for finished vehicles, offering shipping solutions to manufacturers and shippers worldwide through modern fleet and operational expertise |
223 | |||
| 44 |
ELTON Groupelton-group.com
A leading distributor of chemical ingredients and provider of industrial solutions, offering value-added raw materials to various industries in multiple countries |
214 | |||
| 45 |
GENESIS Pharmagenesispharma.com
A regional biopharma organization in Central and Eastern Europe commercializing innovative pharmaceutical products for severe and rare diseases through strategic alliances |
205 | |||
| 46 |
Divani Collection Hotelsdivanis.com
Establishing a legacy of Greek hospitality since 1958, offering luxury hotels with impeccable service, comfort, and attention to detail |
199 | |||
| 47 |
UBITECHubitech.eu
A leading provider of innovative technical solutions, consulting services, and IT integration for businesses, organizations, and governments worldwide |
186 | |||
| 48 |
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 | |||
| 49 |
Digital Publications Groupmyikona.gr
Specializing in personalized photographic and printing products, the company aims to deepen human relations by offering high-quality, custom products and services globally |
28 | |||
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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 Greece
- The largest companies in Greece 778
- Multinational companies in Greece 217
- Manufacturers in Greece 92
- Companies with in-house R&D in Greece 83
- Retail chains in Greece 78
- Critical infrastructure operators in Greece 73
- Consumer goods companies in Greece 57
- Pharmaceutical Manufacturing companies in Greece 55
- Education providers in Greece 54
- Companies with a mobile app in Greece 50
- Public sector organisations in Greece 49
- Financial services firms in Greece 48
- Pharmaceutical companies in Greece 48
- Food and beverage companies in Greece 47
- Food and Beverage Manufacturing companies in Greece 44
- Distributors and wholesalers in Greece 43
- Family-owned companies in Greece 41
- IT Services and IT Consulting companies in Greece 38
- Software Development companies in Greece 38
- IT services companies in Greece 38
- Publicly traded companies in Greece 37
- Logistics companies in Greece 36
- E-commerce companies in Greece 34
- Food and Beverage Services companies in Greece 34