Company lists · Data refreshed September 2026
Top 25 Consultancy agencies based in Greece
RevenueBase identified 847 consultancy agencies headquartered in Greece as of September 2026 and tracks 5,008 professional contacts across them, including 1,049 with verified work emails and 139 with mobile numbers. Athens is the largest hub.
This list covers consultancy agencies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest consultancy agencies based in Greece
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 161 contacts → | ||||
Indirect evidence “We are V+O Group.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 114 contacts → | ||||
Indirect evidence “Clients are tired of fighting on their own, we fight with them." We are the Newtons Laboratory because we stand for: Creativity, Fresh ideas, Innovative thinking, Passion for…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 81 contacts → | ||||
Indirect evidence “ITMC S.A.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 65 contacts → | ||||
Indirect evidence “NOISIS S.A.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 59 contacts → | ||||
Indirect evidence “Solid Havas is an independent 360o communication agency offering its clients fully integrated effective solutions through Advertising, PR, Digital, BTL and CSR services.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 54 contacts → | ||||
Indirect evidence “Our tailored business solutions enable employers to leverage our professional expertise to gain sufficient time and resources to focus on their core business activities.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 52 contacts → | ||||
Indirect evidence “Our mission is simple: To grow your business.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 47 contacts → | ||||
Indirect evidence “S.G.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 45 contacts → | ||||
Indirect evidence “NAMA Consulting Engineers and Planners SA was founded in Athens (GR) at the beginning of 1990.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 43 contacts → | ||||
Indirect evidence “EWORX is an AI-first digital agency focused on the User Experience.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 40 contacts → | ||||
Indirect evidence “At Globe One Digital, we are more than just a digital agency - we are passionate innovators who have been driving digital communication forward for over 25 years.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 34 contacts → | ||||
Indirect evidence “Η εταιρεία EPIDOSIS Σύμβουλοι Ανάπτυξης Επιχειρήσεων, φέρνει την επανάσταση στην συμβουλευτική και φιλοδοξεί να στηρίξει την επιχειρηματικότητα, προσφέροντας πρακτικές και άμεσες…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 32 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 32 contacts → | ||||
Strong evidence “EEO GROUP is a leading independent consultancy in the area of social development (human resources, education, labour markets etc), public administration reform and regional…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 32 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 31 contacts → | ||||
Indirect evidence “attp is an advertising agency based in Athens Greece, head of a Group of specialized companies that offer a full and comprehensive range of communication services to international…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 31 contacts → | ||||
Indirect evidence “NOVACERT is the largest consulting company in Greece, providing integrated solutions and innovative services through pioneer technologies that continually add value and…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 30 contacts → | ||||
Strong evidence “Digital Consultants” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 30 contacts → | ||||
Indirect evidence “Being a mere 19 years on the Communication /Advertising Universe, we find it normal to feel like teenagers (some don’t seem to consider it a virtue, but our clients do).” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 30 contacts → | ||||
Strong evidence “EXERGIA is an independent firm of consultants operating internationally and providing specialized advice, expertise and technical consultancy on the sectors of Energy, Environment…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 28 contacts → | ||||
Indirect evidence “Leading provider of integrated professional services to business, goverment and institutional clients.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 27 contacts → | ||||
Strong evidence “VisionIT is an IT consultancy firm aiming to provide its customers with unique expert IT solutions in the financial services industry.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 27 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 27 contacts → | ||||
Indirect evidence “Η εταιρεία Break Even Consulting ειδικεύεται στην παροχή συμβουλευτικών και μελετητικών υπηρεσιών υψηλής ποιότητας σε επιχειρήσεις, οργανισμούς και σε φορείς του δημοσίου και…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 25 contacts → | ||||
Indirect evidence “People with Results' ISON is a Consulting, Counseling & Publishing House established in 1991 and offering services in Greece, Cyprus and the Balkans.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: consultancy agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names consultancy agencies.
- Partial evidence
- Its own public description names part of consultancy agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name consultancy agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 847 consultancy agencies based in Greece
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Consultancy agencies based in Greece at a glance
As of Sep 24, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 26.0dCompany record updated
Median 80.0dHow 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 consultancy agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Greece whose own description of what they do matches “consultancy agencies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names consultancy agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among consultancy agencies, 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 its RevenueBase Smart Search 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, 1,049 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 24, 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.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names consultancy agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many consultancy agencies are there based in Greece?
RevenueBase identified 847 consultancy agencies 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?
V O Group, headquartered in Greece, tops this list with the largest team on record.
Which city has the most consultancy agencies?
Athens leads with 290 headquartered companies, followed by Thessaloniki (43) and Marousi (10).
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 1,049 verified decision-maker contacts tracked across these 847 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 24, 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 Smart Search, 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.
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