This selection of large IT services companies in Greece provides a view of the country's technology sector. These firms primarily focus on IT consulting, software development, and telecommunications. Notable companies include OTE Group of Companies, which is part of Deutsche Telekom Group and offers a range of telecom services, and Accenture Greece, providing global consulting services and technology solutions. Uni Systems, an established ICT partner, has over 60 years of experience in innovative solutions.
Other significant players are Intracom Telecom, a global provider of technology systems specializing in fixed wireless access and 5G/4G innovation, and Mellon Group, offering technology solutions and outsourced services across various sectors. EUROPEAN DYNAMICS focuses on designing and operating complex IT systems for eGovernment activities. The headquarters are predominantly located in Athens and its surrounding areas, indicating a geographical concentration of the IT services industry.
| # | 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 |
Accenture Greeceaccenture.com
Provides global consulting services, leveraging technology to drive innovation, create digital ecosystems, and transform organizations across private and public sectors, enhancing competitiveness. |
1,209 | |||
| 3 |
Uni Systemsunisystems.com
An established ICT partner with over 60 years of experience, providing innovative solutions to European and international organizations in various sectors |
1,100 | |||
| 4 |
Intracom Telecomintracom-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 |
1,065 | |||
| 5 |
Mellon Groupmellongroup.com
Multinational group providing technology solutions and outsourced services to organizations in consumer business, financial, utilities, telecom, and retail sectors |
1,040 | |||
| 6 |
EUROPEAN DYNAMICSeurodyn.com
Design, develop, support, and operate complex IT systems and software products tailored for eGovernment activities across multiple countries. |
843 | |||
| 7 |
EPSILONNETepsilonnet.gr
A group of companies dedicated to IT, digital content development, and vocational training, leading the digital transformation of Greek enterprises |
777 | |||
| 8 |
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 | |||
| 9 |
Qualco Groupqualco.group
Innovative technology solutions empower individuals in finance, property, and digital fields, creating better financial well-being and transforming businesses |
469 | |||
| 10 |
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 | |||
| 11 |
T-Digital by Deutsche Telekomt-digital-greece.com
T-Digital is a cutting-edge IT hub in Greece, fostering creativity and innovation to develop high-quality products and services in integrated teams |
443 | |||
| 12 |
Cognitycognity.gr
Cognity is a digital enabler for telecommunications, financial services, and retail industries in Europe, Middle East, and South Africa, specializing in digital transformation services |
428 | |||
| 13 |
Info Quest Technologiesinfoquest.gr
Incorporating new technologies to provide advanced products, integrated solutions, and services that satisfy emerging needs in IT and Telecommunications convergence |
387 | |||
| 14 |
SingularLogicsingularlogic.eu
Leading software integrator providing enterprise solutions and services for large organizations in public and private sectors, with expertise in digital challenges and IT solutions |
369 | |||
| 15 |
Agile Actorsagileactors.com
We provide software development and data engineering services by cultivating skilled tech teams, focusing on continuous improvement and career advancement for tech professionals |
336 | |||
| 16 |
Neurosoftneurosoft.gr
A leading provider offering integrated services in Cyber Security, Technology Solutions, and Field Services for business resilience and continuity |
330 | |||
| 17 |
ARHS Developments Hellasarhs-dev-hellas.com
Specializing in advanced IT project and system management, software development, business intelligence, digital trust, and enterprise architecture services for European markets |
289 | |||
| 18 |
SUPERVISOR SAsupervisor.gr
Established in 1988, the company focuses on providing high-quality and modern information systems, including installation, training, customization, and maintenance of software programs |
257 | |||
| 19 |
TEKA Systemstekasystems.com
Leading business technology provider in Greece and Southeastern Europe, specializing in SAP ERP, ServiceNow, Salesforce, and OpenText projects for various industries worldwide |
244 | |||
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| 20 |
EPSILON SINGULARLOGICepsilon-singularlogic.eu
Provider of innovative IT Systems solutions with specialized expertise in ERP, CRM, RETAIL WMS, MOBILE, MIS systems for enterprises and organizations |
236 | |||
| 21 |
Infocellinfocell.gr
A provider of telecommunications, software development, virtual services, broadband, web hosting, R&D, mobile and premium services, internet advertising, and phone services |
233 | |||
| 22 | 222 | ||||
| 23 |
TRASYS GREECEtrasysinternational.com
Specialized IT consultancy providing solutions for public organizations and businesses to comply with regulations, improve digital workspace, and enhance IT security |
208 | |||
| 24 |
UBITECHubitech.eu
A leading provider of innovative technical solutions, consulting services, and IT integration for businesses, organizations, and governments worldwide |
186 | |||
| 25 |
IKNOWHOW SAiknowhow.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 |
147 | |||
| 26 |
Kenotom - Embedded Engineering Excellencekenotom.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 |
145 | |||
| 27 | 143 | ||||
| 28 |
INFORM, member of AUSTRIACARD HOLDINGSaustriacard.com
A digital data solutions provider offering printing services, data management, business process outsourcing, and digital security solutions to various industries |
129 | |||
| 29 |
Quality & Reliability S.A. (QnR)qnr.com.gr
A leading System Integrator in Greece that develops and implements complex IT systems for governmental organizations and enterprises, focusing on emerging technologies and strategic partnerships |
96 | |||
| 30 |
iteam Technology Solutions S.A.iteam.gr
Technology solutions provider specializing in custom software development, business intelligence, machine learning, and infrastructure management, with expertise in aviation industry solutions |
83 | |||
| 31 |
Appnox Technologiesappnox.ai
The company specializes in leveraging AI, Machine Learning, and Data Science to provide organizations with faster, smarter, and actionable insights |
42 | |||
| 32 |
nvisionistnvisionist.com
Development of AI-powered digital technology solutions for renewable energy, safety systems, computer vision, and large-scale project management. |
37 | |||
| 33 | 36 | ||||
| 34 |
Syntheticasynthetica.ai
A data science company creating customized software solutions to enhance workflow efficiency and productivity for businesses |
23 | |||
| 35 |
InVision Consultinginvision.gr
An independent consulting and systems firm based in Athens, specializing in transportation data systems/software development and ICT, with a client-based approach |
12 | |||
| 36 | 11 | ||||
| 37 |
Dot by Dotdotbydot.gr
A tech solutions provider in Athens, Greece, specializing in innovative software products for hospitals and enterprises, driven by quality, innovation, and dedicated professionals |
10 | |||
| 38 |
COntent Management In Culture COMICcomic.com.gr
Specializing in IT and telecommunications services for the cultural sector, the company offers innovative solutions for digital projects and applications |
5 | |||
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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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