# 49 leading corporate groups and holding companies in Greece

Tamtam tracks 49 corporate groups and holding companies headquartered in Greece. This list ranks all of them by number of employees on LinkedIn, led by Piraeus, National Bank of Greece and PPC S.A.. Their median headcount is 625. Half of them were founded in 1979 or later. The most common headquarters are Athens (21) and Marousi (5).

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.

🇬🇷 Greece · 49 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Piraeus](https://www.tamtam.ai/c/piraeus) (piraeusholdings.gr)<br>Leading Greek bank offering diverse financial products, extensive distribution, supporting economic recovery, agriculture, investment banking, leasing, shipping finance, and energy transition financing. | Banking | 🇬🇷 Athens | 6,122 | 1916 |
| 2 | [National Bank of Greece](https://www.tamtam.ai/c/national-bank-of-greece) (nbg.gr)<br>A bank with a rich history and a promising future, offering stability, expertise, digital services, and a strong presence in Greece and abroad | Banking | 🇬🇷 Athens | 5,473 | 1841 |
| 3 | [PPC S.A.](https://www.tamtam.ai/c/ppc-s-a) (ppcgroup.com)<br>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 | Utilities | 🇬🇷 Athens | 2,980 | 1950 |
| 4 | [Aktor Group](https://www.tamtam.ai/c/aktor-group) (intrakat.gr)<br>A leading international infrastructure provider offering construction, photovoltaic parks, quarry management, technical facilities, and project management services with extensive experience and expertise | Holding Companies | 🇬🇷 Athens | 1,546 | 1950 |
| 5 | [ΣΚΛΑΒΕΝΙΤΗΣ](https://www.tamtam.ai/c/company-peristeri) (sklavenitis.gr)<br>A Greek business specializing in retailing food, consumer goods, and durable goods, with a history dating back to 1954 | Retail | 🇬🇷 Peristeri | 1,496 | 1954 |
| 6 | [GEK TERNA Group of Companies](https://www.tamtam.ai/c/gek-terna-group-of-companies) (gekterna.com)<br>A leading business group in Greece with a global presence, specializing in infrastructure, energy production, waste management, and real estate development | Construction | 🇬🇷 Athens | 1,476 | 1969 |
| 7 | [OPAP](https://www.tamtam.ai/c/opap) (allwyn.gr)<br>A leading gaming organization in Greece, offering lotteries, sports betting, horseracing, instant win games, VLTs, and promoting Responsible Gaming | Entertainment Providers | 🇬🇷 Athens | 1,355 | 1958 |
| 8 | [AVAX GROUP](https://www.tamtam.ai/c/avax-group) (avax.gr)<br>A leading Greek construction group listed on Athens Stock Exchange, specializing in infrastructure, MEP works, international projects, real estate, and more | Construction | 🇬🇷 Marousi | 1,254 |  |
| 9 | [Public Group](https://www.tamtam.ai/c/public-group) (public.gr)<br>A platform-based retailer in Greece and Cyprus offering a wide range of household electronics and entertainment products through physical stores and online platforms | Retail | 🇬🇷 Kifisia | 1,068 | 2005 |
| 10 | [Mellon Group](https://www.tamtam.ai/c/mellon-group) (mellongroup.com)<br>Multinational group providing technology solutions and outsourced services to organizations in consumer business, financial, utilities, telecom, and retail sectors | IT Services and IT Consulting | 🇬🇷 Piraeus | 1,040 | 1994 |
| 11 | [ΥΓΕΙΑ / Hygeia Hospital](https://www.tamtam.ai/c/hygeia-hospital) (hygeia.gr)<br>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 | Hospitals and Health Care | 🇬🇷 Athens | 918 | 1975 |
| 12 | [Elpen Pharmaceutical Co. Inc.](https://www.tamtam.ai/c/elpen-pharmaceutical-co-inc) (elpen.gr)<br>A Greek pharmaceutical manufacturer specializing in product development across multiple technologies and therapeutic areas, with a global mission to enhance patients' lives | Pharmaceutical Manufacturing | 🇬🇷 Pikermi | 916 | 1965 |
| 13 | [EUROPEAN DYNAMICS](https://www.tamtam.ai/c/european-dynamics) (eurodyn.com)<br>Design, develop, support, and operate complex IT systems and software products tailored for eGovernment activities across multiple countries. | IT Services and IT Consulting | 🇬🇷 Marousi | 843 | 1993 |
| 14 | [J&P- AVAX S.A.](https://www.tamtam.ai/c/j-and-p-avax-s-a) (avax-sa.gr)<br>A multinational group with a strong presence in 15 countries, specializing in various projects with a focus on growth and acquisition opportunities | Construction | 🇬🇷 Marousi | 815 |  |
| 15 | [GasLog Ltd.](https://www.tamtam.ai/c/gaslog-ltd) (gaslogltd.com)<br>Global provider of LNG shipping services, emphasizing safety, efficiency, and reliability Committed to improving vessel lifecycle and charter processes | Maritime Transportation | 🇬🇷 Piraeus | 814 | 2001 |
| 16 | [Sarantis Group](https://www.tamtam.ai/c/sarantis-group) (sarantisgroup.com)<br>A multinational consumer products group with a 50-year history, offering personal care, home care, health care products, luxury cosmetics, and recognized brands globally | Manufacturing | 🇬🇷 Athens | 802 | 1964 |
| 17 | [Alumil](https://www.tamtam.ai/c/alumil) (alumil.com)<br>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 | 🇬🇷 N. Efkarpia | 789 | 1988 |
| 18 | [Titan Cement Company SA](https://www.tamtam.ai/c/titan-cement-company-sa) (titan.gr)<br>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 | 🇬🇷 Athens | 786 | 1902 |
| 19 | [EPSILONNET](https://www.tamtam.ai/c/epsilonnet) (epsilonnet.gr)<br>A group of companies dedicated to IT, digital content development, and vocational training, leading the digital transformation of Greek enterprises | Software Development | 🇬🇷 Thessaloniki | 777 | 1999 |
| 20 | [Sani/Ikos Group](https://www.tamtam.ai/c/sani-ikos-group) (ikosresorts.com)<br>Luxury beachfront resorts offering personalized hospitality, cultural experiences, sustainable tourism, and career development across Mediterranean coastal destinations. | Hospitality | 🇬🇷 | 736 | 2015 |
| 21 | [IPTO-Independent Power Transmission Operator](https://www.tamtam.ai/c/ipto-independent-power-transmission-operator) (admie.gr)<br>This organization in Greece operates as the Transmission System Operator ensuring reliable electricity supply, market operation, and infrastructure development | Utilities | 🇬🇷 Athens | 734 | 2011 |
| 22 | [PPC Renewables - ΔΕΗ Ανανεώσιμες](https://www.tamtam.ai/c/ppc-renewables) (ppcr.gr)<br>Specializing in renewable energy production, this subsidiary of Greece's largest power generation company focuses on wind, solar, hydro, geothermal, and biomass energy | Renewable Energy Power Generation | 🇬🇷 Athens | 682 | 2006 |
| 23 | [Sunlight Group](https://www.tamtam.ai/c/sunlight-group) (the-sunlight-group.com)<br>Development and production of lead-acid and lithium-ion batteries for industrial mobility, leisure, and renewable energy storage systems worldwide. | Renewable Energy Semiconductor Manufacturing | 🇬🇷 Kifisia | 649 | 1991 |
| 24 | [LAMDA Development S.A.](https://www.tamtam.ai/c/lamda-development-s-a) (lamdadev.com)<br>Specializing in real estate development, investment, and management in Greece and South-Eastern Europe, with a focus on retail, office, and residential sectors | Real Estate | 🇬🇷 Marousi | 643 |  |
| 25 | [METKA](https://www.tamtam.ai/c/metka) (metka.gr)<br>Specializes in infrastructure and construction projects including road construction, certified buildings, railway, marine projects, and waste management, with a focus on efficiency and transparency | Construction | 🇬🇷 Maroussi | 625 | 2023 |
| 26 | [Interunity Group](https://www.tamtam.ai/c/interunity-group) (interunity.com)<br>Leading service provider to the maritime industry, fostering emergence through a family of companies united by shared drive and philosophy | Maritime Transportation | 🇬🇷 Athens | 597 |  |
| 27 | [Skroutz](https://www.tamtam.ai/c/skroutz) (skroutz.gr)<br>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 | Technology, Information and Internet | 🇬🇷 Athens | 536 | 2005 |
| 28 | [SPACE HELLAS S.A.](https://www.tamtam.ai/c/space-hellas-s-a) (space.gr)<br>Comprehensive ICT and security solutions provider offering infrastructure, telecom, cloud, unified communications, and physical security services with global partnerships. | IT Services and IT Consulting | 🇬🇷 Agia Paraskevi | 520 | 1985 |
| 29 | [Antenna Group](https://www.tamtam.ai/c/antenna-group) (antenna-group.com)<br>An international media and entertainment organization with diverse assets in television, radio, digital, music, and publishing, maximizing shareholder value globally | Broadcast Media Production and Distribution | 🇬🇷 Athens | 519 | 1988 |
| 30 | [Attica Group](https://www.tamtam.ai/c/attica-group) (attica-group.com)<br>Leading passenger-shipping group in Greece and the Mediterranean with a modern fleet, serving 63 destinations and reaching 76 ports in Greece and Italy | Maritime | 🇬🇷 Kallithéa | 509 |  |
| 31 | [Qualco Group](https://www.tamtam.ai/c/qualco-group) (qualco.group)<br>Innovative technology solutions empower individuals in finance, property, and digital fields, creating better financial well-being and transforming businesses | Software Development | 🇬🇷 Athens | 469 | 1998 |
| 32 | [Mellon Technologies](https://www.tamtam.ai/c/mellon-technologies) (mellongroup.com)<br>Provider of hardware and software solutions, telemarketing/helpdesk services, and business process management for organizations in consumer-focused industries Founded in 1994 | IT Services and IT Consulting | 🇬🇷 Piraeus | 448 |  |
| 33 | [Thrace Group](https://www.tamtam.ai/c/thrace-group) (thracegroup.com)<br>A global leader in converting polypropylene and polyethylene into innovative technical fabrics and packaging solutions, aligned with EU's circular economy strategy | Manufacturing | 🇬🇷 Alimos (Athens) | 408 | 1977 |
| 34 | [Angelicoussis Group](https://www.tamtam.ai/c/angelicoussis-group) (angelicoussisgroup.com)<br>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 | Maritime Transportation | 🇬🇷 Kallithéa | 372 | 1947 |
| 35 | [ISOMAT](https://www.tamtam.ai/c/isomat) (isomat.eu)<br>A multinational specializing in building chemicals, mortars, and paints with a wide range of high-quality products for various construction projects worldwide | Chemical Manufacturing | 🇬🇷 Thessaloniki - Ag. Athanasios | 347 | 1980 |
| 36 | [Latsco Marine Management](https://www.tamtam.ai/c/latsco-marine-management) (latsco.com)<br>With over 70 years of experience, this organization operates a fleet of tankers, LPG carriers, and LNG carriers, prioritizing excellence and customer satisfaction | Maritime Transportation | 🇬🇷 Kifisia | 346 | 1937 |
| 37 | [FF OpsCo](https://www.tamtam.ai/c/ff-opsco) (ffopsco.com)<br>Designs, manufactures, and distributes jewelry, watches, and accessories internationally Operates fashion, retail, beauty, and holding companies across multiple brands and sectors | Retail Luxury Goods and Jewelry | 🇬🇷 Agios Stefanos | 343 |  |
| 38 | [Attica Bank](https://www.tamtam.ai/c/attica-bank) (crediabank.com)<br>Dynamic financial services provider in Greece with 37 branches, offering banking and investment products for individuals, SMEs, and large companies | Banking | 🇬🇷 Athens | 336 | 1924 |
| 39 | [Hellenic Duty Free Shops](https://www.tamtam.ai/c/hellenic-duty-free-shops) (shopdutyfree.com)<br>A leading Greek travel retail operator with a network of 111 shops offering duty paid and duty free products at exit points in Greece | Retail | 🇬🇷 Stefanos | 315 | 1979 |
| 40 | [Signal](https://www.tamtam.ai/c/signal-glyfada) (thesignalgroup.com)<br>A shipping services group offering ship management, innovative software technology, and strategic investments in the shipping and oil industry | Technology, Information and Internet | 🇬🇷 Glyfada | 249 | 2014 |
| 41 | [Saracakis Group of Companies](https://www.tamtam.ai/c/saracakis-group-of-companies) (saracakis.gr)<br>A distributor of automotive and machinery products from top global brands, focused on delivering innovative solutions and exceptional customer experiences | Holding Companies | 🇬🇷 Athens | 240 | 1922 |
| 42 | [FOURLIS Group of Companies](https://www.tamtam.ai/c/fourlis-group-of-companies) (fourlis.com)<br>Operating retail franchises for home furnishings, sporting goods, and health/wellness, also investing in real estate, retail parks, and omnichannel logistics. | Retail | 🇬🇷 Maroussi | 249 | 1950 |
| 43 | [Neptune Group of Companies](https://www.tamtam.ai/c/neptune-group-of-companies) (neptunelines.com)<br>A top provider of transportation services for finished vehicles, offering shipping solutions to manufacturers and shippers worldwide through modern fleet and operational expertise | Maritime | 🇬🇷 Piraeus | 223 | 1975 |
| 44 | [ELTON Group](https://www.tamtam.ai/c/elton-group) (elton-group.com)<br>A leading distributor of chemical ingredients and provider of industrial solutions, offering value-added raw materials to various industries in multiple countries | Chemical Manufacturing | 🇬🇷 Athens | 214 | 1981 |
| 45 | [GENESIS Pharma](https://www.tamtam.ai/c/genesis-pharma) (genesispharma.com)<br>A regional biopharma organization in Central and Eastern Europe commercializing innovative pharmaceutical products for severe and rare diseases through strategic alliances | Pharmaceutical Manufacturing | 🇬🇷 Athens | 205 | 1997 |
| 46 | [Divani Collection Hotels](https://www.tamtam.ai/c/divani-collection-hotels) (divanis.com)<br>Establishing a legacy of Greek hospitality since 1958, offering luxury hotels with impeccable service, comfort, and attention to detail | Hospitality | 🇬🇷 Athens | 199 | 1958 |
| 47 | [UBITECH](https://www.tamtam.ai/c/ubitech) (ubitech.eu)<br>A leading provider of innovative technical solutions, consulting services, and IT integration for businesses, organizations, and governments worldwide | IT Services and IT Consulting | 🇬🇷 Athens | 186 | 2005 |
| 48 | [Motodynamics Group](https://www.tamtam.ai/c/motodynamics-group) (motodynamics.gr)<br>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 | Motor Vehicle Manufacturing | 🇬🇷 Marousi | 182 | 1969 |
| 49 | [Digital Publications Group](https://www.tamtam.ai/c/digital-publications-group) (myikona.gr)<br>Specializing in personalized photographic and printing products, the company aims to deepen human relations by offering high-quality, custom products and services globally | Printing Services | 🇬🇷 Thermi | 28 | 1975 |

## 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.

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Source: https://www.tamtam.ai/l/holding-companies-greece