Company lists · Data refreshed September 2026

Top 25 Accounting firms for nonprofit organizations based in Greece

RevenueBase identified 92 accounting firms for nonprofit organizations headquartered in Greece as of September 2026 and tracks 374 professional contacts across them, including 98 with verified work emails. Athens is the largest hub.

This list covers accounting firms for nonprofit organizations 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 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
92Companies
374Contacts tracked
98Verified emails
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The 25 largest accounting firms for nonprofit organizations based in Greece

Ranked by team size
Top 25 of 92 accounting firms for nonprofit organizations based in Greece, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firms for nonprofit organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceKallithea, GreeceHQ checked Sep 27, 202611-5028 contacts →

Indirect evidence

“Στην Computax, είμαστε αφοσιωμένοι στην παροχή εξαιρετικών λογιστικών υπηρεσιών που ενδυναμώνουν τις επιχειρήσεις να επιτύχουν τους οικονομικούς τους στόχους.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5025 contacts →

Partial evidence

“Kleopas Alliott Business Consultants is an independent leading Accounting firm in Greece since 1990, with an innovative international orientation and a unique client focus service…”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceKallithea, GreeceHQ checked Sep 27, 202611-5018 contacts →

Indirect evidence

“C&A was established in Athens in 2015.”

Source: RevenueBase Database · checked Sep 27, 2026
4Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5018 contacts →

Partial evidence

“Prooptiki was established as an accounting firm back in 1984; today, it is one of the most successful companies in the economic sector, providing consultation on accounting-tax…”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceIrakleio, GreeceHQ checked Sep 27, 202611-5016 contacts →

Indirect evidence

“Orion is a modern company of chartered accountants, with structures adapted to the requirements of today.”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceChaidari, GreeceHQ checked Sep 27, 202611-5011 contacts →

Indirect evidence

“Λογιστής Λογιστική εταιρεία Σύμβουλος επιχειρήσεων Εφοριακός Αποτιμητής Φοροτεχνικός Chartered accountant Χρηματοποικονομικός σύμβουλος Γραφείο διεκπεραιώσης φορολογικών δηλώσεων…”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceThessaloniki, GreeceHQ checked Sep 27, 202611-5011 contacts →

Indirect evidence

“Η Β.Κ.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5010 contacts →

Partial evidence

“TMS Certified Public Accountants S.A is an independent firm established in Greece, providing a broad range of audit & assurance, tax, business advisory and accounting services.”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceAthens, GreeceHQ checked Sep 27, 202611-5010 contacts →

Indirect evidence

“OLYMPIA AUDITORS S.A.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceElliniko - Argyroupoli, GreeceHQ checked Sep 27, 202611-509 contacts →

Indirect evidence

“Ef Audit A.E.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-508 contacts →

Partial evidence

“Taxation, Audit & Accounting Business Consultants Firm PSARIANOS S.A.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceDafni, GreeceHQ checked Sep 27, 202611-507 contacts →

Indirect evidence

“Στο ευμετάβλητο επιχειρηματικό και οικονομικό περιβάλλον που ζούμε, η ΕΝΤΕΧΝΟΣ ΛΟΓΙΣΤΙΚΗ Α.Ε.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceΝέα Φιλαδέλφεια, GreeceHQ checked Sep 27, 202611-506 contacts →

Indirect evidence

“Από το 2009 το λογιστικό γραφείο «ΧΑΡΑΛΑΜΠΟΣ ΣΑΜΑΡΑΣ ΙΚΕ» μαζί με το κατάλληλο ανθρώπινο δυναμικό εξυπηρετεί πλήθος επιχειρήσεων με κύριο μέλημα την εκπλήρωση των λογιστικών και…”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceMarousi, GreeceHQ checked Sep 27, 202611-505 contacts →

Indirect evidence

“KMC established by a group of Certified Public Accountants as a Societe Anonyme.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceGreeceHQ checked Sep 27, 202611-505 contacts →

Indirect evidence

“We provide the solutions to ensure you have access to this information when needed.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceNea Ionia, GreeceHQ checked Sep 27, 20261-104 contacts →

Indirect evidence

“Here at CBS - Consolidated Business Solutions our highly skilled and experienced staff and colleagues through the use of technology and applying the highest standards of service…”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceΑθηνα, GreeceHQ checked Sep 27, 20261-104 contacts →

Indirect evidence

“Είμαστε η AFS Αδαμόπουλος,Λογιστική Εταιρεία με 25 έτη παρουσίας στον χώρο, πιστοποιημένη με τάξη Α' έχοντας αναπτύξει ένα ευρύ φάσμα Λογιστικών, Φορολογικών και Εργατικών…”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceΑγιος Δημήτριος, GreeceHQ checked Sep 27, 20261-103 contacts →

Partial evidence

“Accounting Office”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-503 contacts →

Partial evidence

“Established in 1975 by Konstantinos Sterodimas, Sterodima & Co is a leading accounting and tax firm based in Agia Paraskevi, Athens.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceMarousi, GreeceHQ checked Sep 27, 202611-503 contacts →

Indirect evidence

“Welcome to EUROLOG LTD!”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceAthens, GreeceHQ checked Sep 27, 20261-102 contacts →

Indirect evidence

“Παρέχουμε λογιστικές, φοροτεχνικές και χρηματοοικονομικές υπηρεσίες σε ατομικές και μικρομεσαίες επιχειρήσεις, καθώς και συμβουλευτική υποστήριξη σε εξειδικευμένα οικονομικά…”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceNéa Smýrni, GreeceHQ checked Sep 27, 202651-2002 contacts →

Partial evidence

“Since our startup on 1995 in France, we provide accounting, tax, auditing and financial services to the business world.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceSantorini, GreeceHQ checked Sep 27, 202611-502 contacts →

Indirect evidence

“Αξιοπιστία και Εξειδίκευση στις Λογιστικές και Συμβουλευτικές Υπηρεσίες”

Source: RevenueBase Database · checked Sep 27, 2026
24Indirect evidenceKaisarianí, GreeceHQ checked Sep 27, 20261-102 contacts →

Indirect evidence

“Our office was founded in 1984 by Mr.”

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceNeo Iraklio, GreeceHQ checked Sep 27, 20261-101 contacts →

Partial evidence

“Dukes & Morrisons is an Advisory firm that provides auditing, accounting and administrative - organizational services credibly and consistently in Greece.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 92 accounting firms for nonprofit organizations based in Greece

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Accounting firms for nonprofit organizations based in Greece at a glance

As of Sep 27, 2026
26.2%Verified-email coverage
4.1Average contacts per company
1-10Median size (employees)
23.9%Largest-city concentration · Athens
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
59
11-50
31
51-200
2

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 92 companies.

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 accounting firms for nonprofit organizations, 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 “accounting firms for nonprofit organizations”. 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 accounting firms for nonprofit organizations), 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 accounting firms for nonprofit organizations, 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, 98 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 27, 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 accounting firms for nonprofit organizations, 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 accounting firms for nonprofit organizations are there based in Greece?

RevenueBase identified 92 accounting firms for nonprofit organizations 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?

Computax S.A, headquartered in Kallithea, tops this list with the largest team on record.

Which city has the most accounting firms for nonprofit organizations?

Athens leads with 22 headquartered companies, followed by Kallithea (2) and Marousi (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 98 verified decision-maker contacts tracked across these 92 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 27, 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.