Company lists · Data refreshed September 2026

Top 25 Knowledge management accounting firms based in Greece

Name: Knowledge management accounting firms based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 116 companies tracked

RevenueBase identified 116 knowledge management accounting firms headquartered in Greece as of September 2026 and tracks 692 professional contacts across them, including 179 with verified work emails. Athens is the largest hub.

This list covers knowledge management accounting 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 21, 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 21, 2026 86% judged on-target in blind review

116Companies

692Contacts tracked

179Verified emails

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The 25 largest knowledge management accounting firms based in Greece

Ranked by team size

Top 25 of 116 knowledge management accounting firms based in Greece, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to knowledge management accounting 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Priority	Partial evidence	Lykovrissi, GreeceHQ checked Sep 21, 2026	51-200	113 contacts →
	Partial evidence “Founded in 1995, PRIORITY SA has become a leading consulting firm in Greece, specializing in Management, IT and Training.” Source: RevenueBase Database · checked Sep 21, 2026
2	Prooptiki SA	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	18 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 21, 2026
3	Orion Certified Auditors SA	Indirect evidence	Irakleio, GreeceHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “Orion is a modern company of chartered accountants, with structures adapted to the requirements of today.” Source: RevenueBase Database · checked Sep 21, 2026
4	Analog Group	Indirect evidence	Peiraias, GreeceHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “SaaS Consulting & Analog SA in their present form operate since early 2006.” Source: RevenueBase Database · checked Sep 21, 2026
5	Quantum Bits	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “Quantum Business & IT Solutions was founded in 2013 with the purpose of providing consulting and training services in the areas of information technology and accounting.” Source: RevenueBase Database · checked Sep 21, 2026
6	Seretis Accounting	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “Seretis Accounting has built a strong reputation as a trusted business and tax consultant over the past 20 years.” Source: RevenueBase Database · checked Sep 21, 2026
7	Quantos S.A. Statistics & Information Systems	Strong evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	13 contacts →
	Strong evidence “QUANTOS is a company active in the field of Knowledge Management through the use of statistical tools.” Source: RevenueBase Database · checked Sep 21, 2026
8	Zisimatos Management	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	1-10	12 contacts →
	Partial evidence “The Zisimatos Management was established in 2006 in order to contribute to the effectiveness of management by providing integrated/inter-operational and training services.” Source: RevenueBase Database · checked Sep 21, 2026
9	Gnosi TAX & Accounting Experts	Partial evidence	Pylaia - Chortiatis, GreeceHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “Gnosi Tax & Accounting Experts” is an accounting and tax services provider company for entities of any size and any field of the global economy.” Source: RevenueBase Database · checked Sep 21, 2026
10	Argo Audit LTD	Partial evidence	GreeceHQ checked Sep 21, 2026	11-50	12 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 21, 2026
11	JPA Audit Greece	Partial evidence	Ayia Paraskevi, GreeceHQ checked Sep 21, 2026	11-50	12 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 21, 2026
12	MDC Stiakakis	Indirect evidence	Iraklion, GreeceHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Over the past 20 years, MDC Stiakakis’ people solve the toughest problems on behalf of their clients by providing high quality consulting, tax and financial services.” Source: RevenueBase Database · checked Sep 21, 2026
13	FK Consulting Services	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “FK Consulting Services Ltd is a dynamic firm providing accounting, tax and consulting services by experienced and accomplished professionals.” Source: RevenueBase Database · checked Sep 21, 2026
14	TLS TAX Advisory	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	1-10	8 contacts →
	Partial evidence “TLS Tax Advisory (Tax & Law Solutions)-founded in 1996 as a sole proprietorship and transformed to a legal entity in 2020- aims to provide tax/accounting consulting and financial…” Source: RevenueBase Database · checked Sep 21, 2026
15	Γραφειο Ψαριανου Α.Ε	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	8 contacts →
	Partial evidence “Taxation, Audit & Accounting Business Consultants Firm PSARIANOS S.A.” Source: RevenueBase Database · checked Sep 21, 2026
16	KKP Group	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “Ο όμιλος ΚΚΡ (Koumarianos-Kontaridis Partners), είναι ένας δυναμικός όμιλος εταιρειών Οικονομικής Επιχειρησιακής Διαχείρισης.” Source: RevenueBase Database · checked Sep 21, 2026
17	Aegean Consulting Group	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	8 contacts →
	Partial evidence “We solve all your consulting and accounting issues Having in its human resources experienced and specialized accountants Aegean Consulting Group provides high level accounting…” Source: RevenueBase Database · checked Sep 21, 2026
18	BPM S.A.	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “BPM S.A.” Source: RevenueBase Database · checked Sep 21, 2026
19	Business Elements	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Business Elements, founded in 2001, consists of a team of highly experienced engineers, targeted in business improvement through international approved methodologies such as Lean…” Source: RevenueBase Database · checked Sep 21, 2026
20	LYSIS	Indirect evidence	Maroussi, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Lysis founded on 2006.” Source: RevenueBase Database · checked Sep 21, 2026
21	Karagiorgos Bros	Partial evidence	Salonica, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “With over 30 years of experience our accounting firm provides comprehensive accounting, tax and consulting services for businesses and individuals.” Source: RevenueBase Database · checked Sep 21, 2026
22	infostep.gr	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “InfoStep Solutions Tο Βήμα κάθε επιχείρησης στην Πληροφορία Η Λύση στη Μηχανογράφηση - Μηχανοργάνωση & Βελτίωση Λειτουργίας της επιχείρησης «Ένας στόχος χωρίς σχέδιο είναι απλά…” Source: RevenueBase Database · checked Sep 21, 2026
23	International Advisory Services S.A	Indirect evidence	Chalandri, GreeceHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “Η International Advisory Services Α.Ε.(IAS) είναι μία συμβουλευτική εταιρία που σχεδιάζει και παρέχει υπεύθυνα υπηρεσίες υψηλής ποιότητας, προσαρμοσμένες στις ιδιαίτερες ανάγκες…” Source: RevenueBase Database · checked Sep 21, 2026
24	Ehorizons Finance & B.I. Solutions	Partial evidence	Patra, GreeceHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “With over 30 years of industry expertise, our financial and accounting company is dedicated to unlocking financial excellence for businesses of all sizes.” Source: RevenueBase Database · checked Sep 21, 2026
25	Accountable NNN Quality Services	Indirect evidence	Neos Kosmos, GreeceHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “A2N3 is a company focused on providing quality professional services.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: knowledge management accounting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names knowledge management accounting firms.
Partial evidence: Its own public description names part of knowledge management accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name knowledge management accounting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 116 knowledge management accounting firms based in Greece

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Knowledge management accounting firms based in Greece at a glance

As of Sep 21, 2026

25.9%Verified-email coverage

6.0Average contacts per company

1-10Median size (employees)

31.0%Largest-city concentration · Athens

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 116 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 knowledge management accounting 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 “knowledge management accounting 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 knowledge management accounting 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 knowledge management accounting 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, 179 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 21, 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.

Knowledge management accounting firms by metro

Knowledge management accounting firms in Athens36

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 knowledge management accounting 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 knowledge management accounting firms are there based in Greece?

RevenueBase identified 116 knowledge management accounting 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?

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

Which city has the most knowledge management accounting firms?

Athens leads with 36 headquartered companies, followed by Thessaloniki (5) and Salonica (3).

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 179 verified decision-maker contacts tracked across these 116 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 21, 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.