Company lists · Data refreshed September 2026

Top 11 Customer success consulting firms based in Greece

RevenueBase identified 45 customer success consulting firms headquartered in Greece as of September 2026 and tracks 123 professional contacts across them, including 23 with verified work emails and 4 with mobile numbers. Athens is the largest hub.

This list covers customer success 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 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
45Companies
123Contacts tracked
23Verified emails
4Mobile numbers
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The 11 largest customer success consulting firms based in Greece

Ranked by team size
Top 11 of 45 customer success consulting firms based in Greece, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names customer success 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.
#CompanyHeadquartersEmployeesContacts
1
Mentoring SAIndirect evidence
Athens, Greece11-505

“MENTORING S.A.”

Source: company website · checked Sep 3, 2026
2
ExcaliberIndirect evidence
Athens, Greece11-505

“Excaliber is driven by passion for professionalism, highest quality and results.”

Source: company website · checked Sep 3, 2026
3
HellascallPartial evidence
Greece11-504

“Hellascall was founded with a strategic goal of rapid growth in the field of Customer Relationship Management and Development on behalf of banking institutions, telecommunications…”

Source: company website · checked Sep 3, 2026
4
Nestor Consulting S.AIndirect evidence
Greece1-104
Source: company website · checked Sep 3, 2026
5Athens, Greece1-103

“ALTIUS specialises in providing consulting services adapted to the particular, unique needs of each customer.”

Source: company website · checked Sep 3, 2026
6Greece11-503

“Είμαστε εταιρία συμβούλων επιχειρήσεων που παρέχουμε ολοκληρωμένες λύσεις για βελτίωση απόδοσης και ανάπτυξης, «tailor made» στις ανάγκες του πελάτη μας, μέσα από: Συμβουλευτικές…”

Source: company website · checked Sep 3, 2026
7Athens, Greece1-103

“From Strategy to Execution: Get a service plan tailor-made for your business needs.”

Source: company website · checked Sep 3, 2026
8
Save2growPartial evidence
Greece1-102

“Save2Grow is an innovative consulting company offering differentiated services with a hands-on approach.”

Source: company website · checked Sep 3, 2026
9
Capstone GroupStrong evidence
Greece11-502

“Capstone Group is a boutique management consulting firm that helps clients improve their strategy, operations and sales efficiency and customer experience.”

Source: company website · checked Sep 3, 2026
10Chania, Greece1-102

“The Company was founded in 2013 with the aim of providing specialized services to businesses and organizations in the Private and Public Sector.”

Source: company website · checked Sep 3, 2026
11
Skills Business ConsultantsIndirect evidence
Greece1-101

“Skills Business Consultants are highly endorsed professionals bringing in a diverse field of expertise from a variety of multinational companies and complex industries.”

Source: company website · checked Sep 3, 2026

Showing 11 of 45 customer success consulting firms based in Greece

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Customer success consulting firms based in Greece at a glance

As of Sep 3, 2026
1-10Median size (employees)
AthensLargest hub · 17 HQs
4Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
34
11-50
11

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 customer success 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 “customer success 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 customer success 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, 23 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 3, 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

How many customer success consulting firms are there based in Greece?

RevenueBase identified 45 customer success 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?

Mentoring SA, headquartered in Athens, tops this list with the largest team on record.

Which city has the most customer success consulting firms?

Athens leads with 17 headquartered companies, followed by Thessaloniki (3) and Thermi Thessaloniki (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 23 verified decision-maker contacts tracked across these 45 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 3, 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.