Company lists · Data verified August 2026

Top 15 Data outsourcing companies based in Greece

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 30 companies tracked

There are 30 data outsourcing companies headquartered in Greece (RevenueBase, August 2026). RevenueBase tracks 1,824 professional contacts across them, including 932 with verified work emails and 57 with mobile numbers. Athens is the largest hub.

This list covers data outsourcing companies 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.

30Companies

1,824Contacts tracked

932Verified emails

57Mobile numbers

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The 15 largest data outsourcing companies based in Greece

Ranked by team size

Top 15 of 30 data outsourcing companies 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	Operators Data Entry Solutions	Athens	501-1,000	112	1
3	Incelligent	Athens	11-50	18	10
4	Heuristic Data	Athens	11-50	15	7
5	CGS MBH	Thessaloniki	11-50	14	11
6	Seven RED Lines	Vrilissia	11-50	14	10
7	Apiron	n/a	11-50	8	3
8	CGS Hellas	Thessaloniki	1-10	7	1
9	Qualento	Athens	1-10	6	5
10	Butterflai	Peristeri	1-10	4	3
11	Optisoft	Athens	11-50	4	1
12	Dtwise	n/a	11-50	3	3
13	BIG Data LAB	Nea Makri	1-10	3	2
14	Ai-Analytix	Athens	1-10	2	1
15	Deep Dive Data Consulting	n/a	1-10	1	1

Showing 15 of 30 data outsourcing companies based in Greece

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Data outsourcing companies based in Greece at a glance

As of Aug 28, 2026

1-10Median size (employees)

AthensLargest hub · 10 HQs

57Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

501-1,000

1,001-5,000

Data outsourcing companies by metro

Metro	Companies
Data outsourcing companies in Athens	10
Data outsourcing companies in Thessaloniki	6
Data outsourcing companies in Nea Makri	1
Data outsourcing companies in Vrilissia	1
Data outsourcing companies in Skg	1
Data outsourcing companies in Peristeri	1
Data outsourcing companies in Thermi	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 outsourcing companies”, 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 outsourcing companies are there based in Greece?

There are 30 data outsourcing companies 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 outsourcing companies?

Athens leads with 10 headquartered companies, followed by Thessaloniki (6) and Nea Makri (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 932 verified decision-maker contacts tracked across these 30 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.