Company lists · Data refreshed September 2026
Top 25 Data consultancies based in Greece
RevenueBase identified 115 data consultancies headquartered in Greece as of September 2026 and tracks 995 professional contacts across them, including 323 with verified work emails and 33 with mobile numbers. Athens is the largest hub.
This list covers data consultancies 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 data consultancies based in Greece
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 46 contacts → | ||||
Partial evidence “WITSIDE is a Data & AI company turning complex data into clarity and clarity into action.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 40 contacts → | ||||
Indirect evidence “BrainCube is a provider of consulting services and integrated software solutions.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 35 contacts → | ||||
Indirect evidence “Neurocom is an analytics engineering firm that helps its customers make sophisticated decisions, improve their profitability, and effectively seize business opportunities using…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 30 contacts → | ||||
Indirect evidence “Digital Consultants” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 28 contacts → | ||||
Indirect evidence “Since 1986, the innovative technology of SPSS Inc.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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. | |||||
| 7 | 27 contacts → | ||||
Indirect 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. | |||||
| 8 | 27 contacts → | ||||
Partial evidence “With a results and data driven culture, we provide integrated marketing, consulting and digital marketing strategy that increases brand awareness and drive online revenue.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 27 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 23 contacts → | ||||
Indirect evidence “Intelligence to shape decisions.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Indirect evidence “Accelerating brand value for FMCG and services, benhcmarking ethnographic studies, AI-development and AI agents, to enhance value of onlife consumer journeys via inventive designs…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 16 contacts → | ||||
Indirect evidence “Medoid AI is an award-winning machine learning consultancy and AI product studio, trusted by global organizations to solve complex challenges with tailored AI solutions.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 16 contacts → | ||||
Indirect evidence “Η Grand Value, δραστηριοποιείται στην παροχή εξειδικευμένων συμβουλευτικών υπηρεσιών που απευθύνονται σε μικρομεσαίες και μεγάλες εταιρείες ολόκληρου του φάσματος της…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 contacts → | ||||
Indirect evidence “Frontier Innovations is an IT solutions SME, with the mission of delivering innovations expanding the digital frontier, while having an impact on its customers.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 14 contacts → | ||||
Indirect evidence “Alternative Research Solutions mission is to support its clients’ brands and business through research-based market understanding and actionable Business Intelligence, based on…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Partial evidence “At Seven Red Lines, we stand at the convergence of innovation and reliability, reshaping the future of Business Intelligence, Data Management, and Outsourcing.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 13 contacts → | ||||
Indirect evidence “QUANTOS is a company active in the field of Knowledge Management through the use of statistical tools.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Indirect evidence “Statistical Decisions (or StatDec) expertise in providing Consultation and Decision Support Analytics to Financial Institutions & other Organizations who are seeking an efficient…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence “Over the past 20 years, MDC Stiakakis’ people solve the toughest problems on behalf of their clients by providing high quality consulting, tax and financial services.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Indirect evidence “Hi, we are Maya, the All-in-One Marketing Intelligence System!” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “Apiron is an innovative business intelligence corporation, using cutting-edge technologies to securely optimize and strengthen our client’s position in the market.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 contacts → | ||||
Indirect evidence “Since 1969 MRB Hellas A.E.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 contacts → | ||||
Indirect evidence “Founded in Athens in 1997, Niriis S.A.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Indirect evidence “We are a boutique consulting agency that helps you navigate through change in order to grow in the digital economy, build a customer centric organization, & improve your business…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Partial evidence “Data has become a major asset for the company of the 21st century.” 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: data consultancies. 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 data consultancies.
- Partial evidence
- Its own public description names part of data consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data consultancies. 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 115 data consultancies based in Greece
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 323 reachable decision-makers.
Free signup · no credit card
Data consultancies 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 27.0dCompany record updated
Median 77.0dHow 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 data consultancies, 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 “data consultancies”. 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 data consultancies), 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 data consultancies, 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, 323 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.
Data consultancies by metro
- Data consultancies in Athens46
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 data consultancies, 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 data consultancies are there based in Greece?
RevenueBase identified 115 data consultancies 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?
Witside, headquartered in Alimos, tops this list with the largest team on record.
Which city has the most data consultancies?
Athens leads with 46 headquartered companies, followed by Thessaloniki (3) and Gerakas (2).
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 323 verified decision-maker contacts tracked across these 115 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.
Ready to reach these companies? Verified emails and direct dials for all 115 data consultancies based in Greece. Start with a free account, no credit card.
Download this list →Related lists
Data consultancies by geography
- Data consultancies based in the United States
- Data consultancies based in the United Kingdom
- Data consultancies based in Brazil
- Data consultancies based in France
- Data consultancies based in Germany
- Data consultancies based in Australia
- Data consultancies based in the Netherlands
- Data consultancies based in Canada
- Data consultancies based in Spain
- Data consultancies based in Italy
- Data consultancies based in South Africa
- Data consultancies based in Sweden
Browse the directory
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.