Company lists · Data verified August 2026

Top 17 Data consulting firms based in Greece

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 41 companies tracked

There are 41 data consulting firms headquartered in Greece (RevenueBase, August 2026). RevenueBase tracks 1,806 professional contacts across them, including 975 with verified work emails and 56 with mobile numbers. Athens is the largest hub.

This list covers data consulting firms headquartered in Greece, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

41Companies

1,806Contacts tracked

975Verified emails

56Mobile numbers

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The 17 largest data consulting firms based in Greece

Ranked by team size

Top 17 of 41 data consulting firms based in Greece, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Adastra	Thessaloniki	1,001-5,000	1,572	872
2	Witside	Alimos	11-50	46	38
3	Neurocom SA	n/a	11-50	36	28
4	Seven RED Lines	Vrilissia	11-50	14	10
5	Alphacons Intelligent Technology Solutions S.A	Iraklio	11-50	13	3
6	Apiron	n/a	11-50	8	3
7	Niriis S.A	Athens	11-50	8	2
8	Thinkdata PC	Athens	11-50	7	1
9	Qualento	Athens	1-10	6	5
10	Butterflai	Peristeri	1-10	4	3
11	BIG Data LAB	Nea Makri	1-10	3	2
12	Innosake	Athens	1-10	2	2
13	Precognize	n/a	1-10	2	1
14	Ai-Analytix	Athens	1-10	2	1
15	ASTAT	n/a	1-10	2	1
16	NVG Consulting	Athens	11-50	1	1
17	Pena Data Consultancy	Athens	1-10	1	1

Showing 17 of 41 data consulting firms based in Greece

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Data consulting firms based in Greece at a glance

As of Aug 28, 2026

1-10Median size (employees)

AthensLargest hub · 16 HQs

56Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

1,001-5,000

Data consulting firms by metro

Metro	Companies
Data consulting firms in Athens	16
Data consulting firms in Thessaloniki	4
Data consulting firms in Iraklio	1
Data consulting firms in Nea Makri	1
Data consulting firms in Vrilissia	1
Data consulting firms in Skg	1
Data consulting firms in Alimos	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “data consulting firms”, with match quality audited by blind human judging, and headquartered in Greece.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many data consulting firms are there based in Greece?

There are 41 data consulting firms headquartered in Greece as of August 2026 (RevenueBase).

What is the largest company on this list?

Adastra, headquartered in Thessaloniki, tops this list with the largest team on record.

Which city has the most data consulting firms?

Athens leads with 16 headquartered companies, followed by Thessaloniki (4) and Iraklio (1).

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 975 verified decision-maker contacts tracked across these 41 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.