Company lists · Data refreshed September 2026

Top 25 IT infrastructure consulting firms based in Greece

Name: IT infrastructure consulting firms based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 240 companies tracked

RevenueBase identified 240 IT infrastructure consulting firms headquartered in Greece as of September 2026 and tracks 5,948 professional contacts across them, including 2,650 with verified work emails and 163 with mobile numbers. Athens is the largest hub.

This list covers IT infrastructure consulting firms headquartered in Greece, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

240Companies

5,948Contacts tracked

2,650Verified emails

163Mobile numbers

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The 25 largest IT infrastructure consulting firms based in Greece

Ranked by team size

Top 25 of 240 IT infrastructure consulting firms based in Greece, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Accenture GreeceIndirect evidence	Kifisia, GreeceHQ checked Sep 4, 2026	1,001-5,000	1,177
	“Η Accenture είναι ηγέτιδα εταιρεία παροχής συμβουλευτικών υπηρεσιών σε παγκόσμιο επίπεδο, δημιουργώντας απτή αξία με ταχύτητα και σε μεγάλη κλίμακα.” Source: company website · checked Sep 4, 2026
2	Salfo & Associates SAPartial evidence	Athens, GreeceHQ checked Sep 4, 2026	201-500	361
	“About SALFO & Associates SALFO & Associates SA is a premier Greek Engineering & Management Consulting firm, delivering excellence through innovation, integrity, and human-centric…” Source: company website · checked Sep 4, 2026
3	Real ConsultingStrong evidence	Chalandri, GreeceHQ checked Sep 4, 2026	501-1,000	279
	“Real Consulting, is one of the leading consulting and implementation of integrated IT projects companies in Greece.” Source: company website · checked Sep 4, 2026
4	Performance Technologies S.AIndirect evidence	Athens, GreeceHQ checked Sep 4, 2026	201-500	228
	“Performance Technologies is a trusted partner for organizations redefining themselves through digital transformation.” Source: company website · checked Sep 4, 2026
5	Inttrust S.AStrong evidence	GreeceHQ checked Sep 4, 2026	51-200	146
	“Established in 2006, InTTrust is an IT Consulting, Technology and Digital solutions and services provider.” Source: company website · checked Sep 4, 2026
6	PriorityStrong evidence	Athens, GreeceHQ checked Sep 4, 2026	51-200	113
	“Founded in 1995, PRIORITY SA has become a leading consulting firm in Greece, specializing in Management, IT and Training.” Source: company website · checked Sep 4, 2026
7	BewisePartial evidence	GreeceHQ checked Sep 4, 2026	51-200	93
	“BEWISE is an established team of dedicated IT professionals combining years of technical and business experience.” Source: company website · checked Sep 4, 2026
8	Active Computer Systems S.AIndirect evidence	Athens, GreeceHQ checked Sep 4, 2026	51-200	91
	“Reaching 30 years of operation, Active is today among the largest Greek technology providers, reinforced by well-established partnerships with the world’s largest technology…” Source: company website · checked Sep 4, 2026
9	Infinitum S.APartial evidence	Attica, GreeceHQ checked Sep 4, 2026	51-200	90
	“Established in 1991, Infinitum, a healthy and growing organization, boasts more than 30 years of expertise in the area of IT services and strong, rewarding relationships with…” Source: company website · checked Sep 4, 2026
10	IntellisolutionsIndirect evidence	Athens, GreeceHQ checked Sep 4, 2026	51-200	85
	“Intelli Solutions S.A.” Source: company website · checked Sep 4, 2026
11	Innovation Technology And Management ConsultantsIndirect evidence	Marousi, GreeceHQ checked Sep 4, 2026	n/a	81
	“ITMC S.A.” Source: company website · checked Sep 4, 2026
12	Office Line SAIndirect evidence	Athens, GreeceHQ checked Sep 4, 2026	51-200	68
	“Office Line S.A is an internationally recognized leading Cloud Solutions Provider and Digital Transformation company, empowering customers’ specific business requirements, while…” Source: company website · checked Sep 4, 2026
13	Ergologic S.AIndirect evidence	Patras, GreeceHQ checked Sep 4, 2026	11-50	52
	“Ergologic SA was founded in in Patras.” Source: company website · checked Sep 4, 2026
14	Wizz ITPartial evidence	GreeceHQ checked Sep 4, 2026	11-50	49
	“Technology Consulting” Source: company website · checked Sep 4, 2026
15	Smartns Technological S.AStrong evidence	GreeceHQ checked Sep 4, 2026	51-200	43
	“SmartNS Technological S.A, founded in 2004 and headquartered in Athens, Greece, is a trusted leader in IT infrastructure design and implementation, security, and automation…” Source: company website · checked Sep 4, 2026
16	Data NoesisIndirect evidence	GreeceHQ checked Sep 4, 2026	11-50	35
	“Data Noesis follows a market-oriented approach in order to drive each customer in a digital transformation journey, with innovative solutions and professional services.” Source: company website · checked Sep 4, 2026
17	Blend TechnologiesIndirect evidence	Athens, GreeceHQ checked Sep 4, 2026	51-200	34
	“Complexity shouldn’t be a barrier to growth.” Source: company website · checked Sep 4, 2026
18	Elmisystems SAPartial evidence	GreeceHQ checked Sep 4, 2026	51-200	33
	“ELMISYSTEMS is a large Greek IT company with a leading role in the IT Industry and the Retail Business in Greece.” Source: company website · checked Sep 4, 2026
19	PSP Telecom & NetworkingIndirect evidence	GreeceHQ checked Sep 4, 2026	51-200	33
	“Professional Service Partners (PSP), with its people-centered communication message “People Supporting People”, is a key player in the Greek market providing integrated services…” Source: company website · checked Sep 4, 2026
20	Visionit GRPartial evidence	GreeceHQ checked Sep 4, 2026	11-50	27
	“VisionIT is an IT consultancy firm aiming to provide its customers with unique expert IT solutions in the financial services industry.” Source: company website · checked Sep 4, 2026
21	Systecom S.AIndirect evidence	Metamorfosi, GreeceHQ checked Sep 4, 2026	11-50	25
	“Our company's structure is based on a modern and flexible model ensuring adaptation in running developments but also in continuous requirements and needs of our clients.” Source: company website · checked Sep 4, 2026
22	EvolutionprojectsPartial evidence	GreeceHQ checked Sep 4, 2026	11-50	21
	“Technology - Consulting - Communication” Source: company website · checked Sep 4, 2026
23	Precicom S.AIndirect evidence	GreeceHQ checked Sep 4, 2026	11-50	19
	“30 years of success and Clients TRUST we earn every single day!” Source: company website · checked Sep 4, 2026
24	BinarytreePartial evidence	Athens, GreeceHQ checked Sep 4, 2026	11-50	19
	“Binary Tree was founded by professionals with notable presence in the Greek Information Technology scene, with the purpose of providing solutions to IT implementation and IT…” Source: company website · checked Sep 4, 2026
25	Define Solutions S.AIndirect evidence	GreeceHQ checked Sep 4, 2026	11-50	18
	“At Define Solutions, we put your business needs and goals first, in order to deliver tailored solutions that drive growth and streamline operations.” Source: company website · checked Sep 4, 2026

Showing 25 of 240 IT infrastructure consulting firms based in Greece

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IT infrastructure consulting firms based in Greece at a glance

As of Sep 4, 2026

1-10Median size (employees)

AthensLargest hub · 67 HQs

163Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

153

11-50

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

31–60

232

61–90

1,430

90–180

980

180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Greece whose own description of what they do matches “IT infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Greece are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 2,650 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

IT infrastructure consulting firms by metro

IT infrastructure consulting firms in Athens67

Frequently asked

How many IT infrastructure consulting firms are there based in Greece?

RevenueBase identified 240 IT infrastructure consulting firms headquartered in Greece as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Accenture Greece, headquartered in Athens, tops this list with the largest team on record.

Which city has the most IT infrastructure consulting firms?

Athens leads with 67 headquartered companies, followed by Thessaloniki (7) and Marousi (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,650 verified decision-maker contacts tracked across these 240 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.