Company lists · Data refreshed September 2026

Top 22 Audit and assurance firms based in Greece

RevenueBase identified 57 audit and assurance firms headquartered in Greece as of September 2026 and tracks 1,693 professional contacts across them, including 346 with verified work emails. Athens is the largest hub.

This list covers audit and assurance 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 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 19, 2026 86% judged on-target in blind review
57Companies
1,693Contacts tracked
346Verified emails
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The 22 largest audit and assurance firms based in Greece

Ranked by team size
Top 22 of 57 audit and assurance firms based in Greece, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to audit and assurance firms: 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
1Partial evidenceAthens, GreeceHQ checked Sep 19, 20261,001-5,0001,313 contacts →

Partial evidence

“Grant Thornton SA provides personalised assurance, tax and advisory services to listed entities, privately-held businesses and public sector businesses.”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceMaroussi, GreeceHQ checked Sep 19, 202611-5029 contacts →

Partial evidence

“tgs (Hellas) is the brand under which experienced professionals collaborate to provide integrated business services, audit, consulting, financial advisory, tax, compliance, legal…”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceAthens, GreeceHQ checked Sep 19, 202611-5025 contacts →

Indirect 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 19, 2026
4Indirect evidenceAthens, GreeceHQ checked Sep 19, 202611-5021 contacts →

Indirect evidence

“Actnet Tax Solutions is a leading, independent firm of certified accountants.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceKallithea, GreeceHQ checked Sep 19, 202611-5018 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceAthens, GreeceHQ checked Sep 19, 202611-5016 contacts →

Indirect evidence

“NEXIA EUROSTATUS CERTIFIED AUDITORS S.A, was established in by a team of experienced and qualified professionals, members of the Greek Institute of Certified Public Accountants of…”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceGreeceHQ checked Sep 19, 202611-5012 contacts →

Partial evidence

“ARGO AUDIT is an auditing, tax and accounting firm, member of S.O.E.L.(The Institute of Certified Public Accountants of Greece) with its structures to meet the high demands of a…”

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceAyia Paraskevi, GreeceHQ checked Sep 19, 202611-5012 contacts →

Partial evidence

“JPA Audit Greece is a firm of Certified Public Accountants and Business Advisors, member of the Institute of Certified Public Accountants of Greece and the Accounting and Auditing…”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceThessaloniki, GreeceHQ checked Sep 19, 20261-1011 contacts →

Partial evidence

“Alpha Auditors" is a fast-growing company specializing in providing audit, consulting and tax services.”

Source: RevenueBase Database · checked Sep 19, 2026
10Strong evidenceAthens, GreeceHQ checked Sep 19, 202611-5010 contacts →

Strong 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 19, 2026
11Indirect evidenceAthens, GreeceHQ checked Sep 19, 202611-5010 contacts →

Indirect evidence

“OLYMPIA AUDITORS S.A.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceKifisia, GreeceHQ checked Sep 19, 202611-5010 contacts →

Partial evidence

“DFK PD AUDIT S.A.”

Source: RevenueBase Database · checked Sep 19, 2026
13Partial evidenceAthens, GreeceHQ checked Sep 19, 202611-509 contacts →

Partial evidence

“CPA Kudos Greece is a Greek-owned audit firm offering a full range of services in the areas of auditing, accounting, taxation, and advisory.”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceElliniko - Argyroupoli, GreeceHQ checked Sep 19, 202611-509 contacts →

Partial evidence

“Ef Audit A.E.”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceNéa Ionía, GreeceHQ checked Sep 19, 20261-108 contacts →

Partial evidence

“Founded in 2019, with headquarters in Larissa and offices in Athens and Thessaloniki, FiveB is a growing firm of chartered accountants offering bespoke audit, tax, advisory, and…”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceAthens, GreeceHQ checked Sep 19, 202611-508 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceMarousi, GreeceHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceAthens, GreeceHQ checked Sep 19, 20261-105 contacts →

Partial evidence

“Quality assurance review is one of the main pillars safeguarding the prestige and reliability of the institution of auditing.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceSalonica, GreeceHQ checked Sep 19, 202611-503 contacts →

Indirect evidence

“Grekos Consulting is specialized in providing comprehensive consulting services.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceNéa Smýrni, GreeceHQ checked Sep 19, 202651-2002 contacts →

Indirect 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 19, 2026
21Partial evidenceChalandri, GreeceHQ checked Sep 19, 20261-102 contacts →

Partial evidence

“ATH Consulting – Trust, Expertise, Growth At ATH Consulting, we deliver comprehensive solutions in Audit, Advisory, Tax, Financial Consulting, and Payroll Services.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceNeo Iraklio, GreeceHQ checked Sep 19, 20261-101 contacts →

Indirect 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 19, 2026

Showing 22 of 57 audit and assurance firms based in Greece

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Audit and assurance firms based in Greece at a glance

As of Sep 19, 2026
20.4%Verified-email coverage
29.7Average contacts per company
1-10Median size (employees)
29.8%Largest-city concentration · Athens
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
25
51-200
2
1,001-5,000
1

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 57 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 audit and assurance firms, 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 “audit and assurance firms”. 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 audit and assurance firms), 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 audit and assurance 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 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, 346 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 19, 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 audit and assurance firms, 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 audit and assurance firms are there based in Greece?

RevenueBase identified 57 audit and assurance 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?

Grant Thornton Greece, headquartered in Athens, tops this list with the largest team on record.

Which city has the most audit and assurance firms?

Athens leads with 17 headquartered companies, followed by Thessaloniki (3) and Chalandri (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 346 verified decision-maker contacts tracked across these 57 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 19, 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.