Company lists · Data refreshed September 2026

Top 25 Advisory consulting firms based in Greece

Name: Advisory consulting firms based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 443 companies tracked

RevenueBase identified 443 advisory consulting firms headquartered in Greece as of September 2026 and tracks 5,420 professional contacts across them, including 1,635 with verified work emails and 101 with mobile numbers. Athens is the largest hub.

This list covers advisory 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 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 23, 2026 86% judged on-target in blind review

443Companies

5,420Contacts tracked

1,635Verified emails

101Mobile numbers

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The 25 largest advisory consulting firms based in Greece

Ranked by team size

Top 25 of 443 advisory consulting firms based in Greece, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to advisory consulting 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	Grant Thornton Greece	Partial evidence	Athens, GreeceHQ checked Sep 23, 2026	1,001-5,000	1,313 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 23, 2026
2	Accenture Greece	Indirect evidence	Kifisia, GreeceHQ checked Sep 23, 2026	1,001-5,000	1,171 contacts →
	Indirect evidence “Η Accenture είναι ηγέτιδα εταιρεία παροχής συμβουλευτικών υπηρεσιών σε παγκόσμιο επίπεδο, δημιουργώντας απτή αξία με ταχύτητα και σε μεγάλη κλίμακα.” Source: RevenueBase Database · checked Sep 23, 2026
3	Real Consulting	Partial evidence	Chalandri, GreeceHQ checked Sep 23, 2026	501-1,000	285 contacts →
	Partial evidence “Real Consulting, is one of the leading consulting and implementation of integrated IT projects companies in Greece.” Source: RevenueBase Database · checked Sep 23, 2026
4	Priority	Partial evidence	Lykovrissi, GreeceHQ checked Sep 23, 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 23, 2026
5	ASD Account Financial Advisor SA	Indirect evidence	Peristéra, GreeceHQ checked Sep 23, 2026	201-500	69 contacts →
	Indirect evidence “Our company began as an accounting office established in 1991.” Source: RevenueBase Database · checked Sep 23, 2026
6	Noisis Development Consultant S.A	Indirect evidence	Athens, GreeceHQ checked Sep 23, 2026	51-200	65 contacts →
	Indirect evidence “NOISIS S.A.” Source: RevenueBase Database · checked Sep 23, 2026
7	Nepa Economic Consulting S.A	Strong evidence	Athens, GreeceHQ checked Sep 23, 2026	51-200	39 contacts →
	Strong evidence “NEPA Economic Consulting, led by CEO Konstantinos Patiris, is a premier financial advisory firm specializing in integrated Tax, Accounting and Business Consulting.” Source: RevenueBase Database · checked Sep 23, 2026
8	Epidosis	Indirect evidence	Thessaloniki, GreeceHQ checked Sep 23, 2026	11-50	34 contacts →
	Indirect evidence “Η εταιρεία EPIDOSIS Σύμβουλοι Ανάπτυξης Επιχειρήσεων, φέρνει την επανάσταση στην συμβουλευτική και φιλοδοξεί να στηρίξει την επιχειρηματικότητα, προσφέροντας πρακτικές και άμεσες…” Source: RevenueBase Database · checked Sep 23, 2026
9	Exergia S.A., Climate Change Consultants	Indirect evidence	Athens, GreeceHQ checked Sep 23, 2026	11-50	30 contacts →
	Indirect evidence “EXERGIA is an independent firm of consultants operating internationally and providing specialized advice, expertise and technical consultancy on the sectors of Energy, Environment…” Source: RevenueBase Database · checked Sep 23, 2026
10	Atlas Consulting	Partial evidence	Pylaia, GreeceHQ checked Sep 23, 2026	11-50	30 contacts →
	Partial evidence “is a Tax, Accounting, and Consulting Company that has its origin in Greece and is expanded internationally.” Source: RevenueBase Database · checked Sep 23, 2026
11	DNG Consulting SA	Partial evidence	Athens, GreeceHQ checked Sep 23, 2026	11-50	29 contacts →
	Partial evidence “Our team is aiming to find the most suitable funding project for your company and to provide consulting services.” Source: RevenueBase Database · checked Sep 23, 2026
12	TGS Hellas	Strong evidence	Maroussi, GreeceHQ checked Sep 23, 2026	11-50	29 contacts →
	Strong 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 23, 2026
13	PRC Group The Management House S.A	Indirect evidence	Metamorfosi, GreeceHQ checked Sep 23, 2026	51-200	28 contacts →
	Indirect evidence “Leading provider of integrated professional services to business, goverment and institutional clients.” Source: RevenueBase Database · checked Sep 23, 2026
14	Your Confidence S.A	Indirect evidence	Athens - Kifisia, GreeceHQ checked Sep 23, 2026	51-200	27 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
15	Break Even Consulting	Partial evidence	GreeceHQ checked Sep 23, 2026	11-50	27 contacts →
	Partial evidence “Η εταιρεία Break Even Consulting ειδικεύεται στην παροχή συμβουλευτικών και μελετητικών υπηρεσιών υψηλής ποιότητας σε επιχειρήσεις, οργανισμούς και σε φορείς του δημοσίου και…” Source: RevenueBase Database · checked Sep 23, 2026
16	Kleopas Alliott Business Consultants SA	Indirect evidence	Athens, GreeceHQ checked Sep 23, 2026	11-50	25 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 23, 2026
17	ATC Certified Public Accountants	Partial evidence	GreeceHQ checked Sep 23, 2026	11-50	25 contacts →
	Partial evidence “atc providing Audit, Tax and Advisory services.” Source: RevenueBase Database · checked Sep 23, 2026
18	European Profiles Greece	Indirect evidence	Chalandri, GreeceHQ checked Sep 23, 2026	11-50	24 contacts →
	Indirect evidence “European Profiles S.A.” Source: RevenueBase Database · checked Sep 23, 2026
19	Zephyros Partners	Strong evidence	Paradeisos Amarousiou, GreeceHQ checked Sep 23, 2026	11-50	22 contacts →
	Strong evidence “We provide assurance, advisory and consulting services in a broad range of business sectors.” Source: RevenueBase Database · checked Sep 23, 2026
20	Interlog SA	Partial evidence	Athens, GreeceHQ checked Sep 23, 2026	11-50	21 contacts →
	Partial evidence “INTERLOG SA provides a range of high-quality services, including accounting, tax as well as advisory services to individuals, corporates and other organisations.” Source: RevenueBase Database · checked Sep 23, 2026
21	Define Solutions S.A	Indirect evidence	Athens, GreeceHQ checked Sep 23, 2026	11-50	19 contacts →
	Indirect evidence “At Define Solutions, we put your business needs and goals first, in order to deliver tailored solutions that drive growth and streamline operations.” Source: RevenueBase Database · checked Sep 23, 2026
22	Prooptiki SA	Indirect evidence	Athens, GreeceHQ checked Sep 23, 2026	11-50	18 contacts →
	Indirect 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 23, 2026
23	Dextera Consulting	Partial evidence	Marousi, GreeceHQ checked Sep 23, 2026	11-50	18 contacts →
	Partial evidence “Dextera is an independent consulting firm, specialized in crafting solutions to the complex business and strategic challenges of our clients.” Source: RevenueBase Database · checked Sep 23, 2026
24	Oecon Group Of Companies	Partial evidence	Thessaloniki, GreeceHQ checked Sep 23, 2026	11-50	17 contacts →
	Partial evidence “OECON Group, a Greek-based consultancy company, has been providing exceptional business consulting services since 2003.” Source: RevenueBase Database · checked Sep 23, 2026
25	Remaco S.A	Partial evidence	Marousi, GreeceHQ checked Sep 23, 2026	11-50	16 contacts →
	Partial evidence “REMACO S.A, a founding member of the Hellenic Association of Management Consulting Firms (SESMA), is offering governance and innovation services, responsibly and consistently…” Source: RevenueBase Database · checked Sep 23, 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: advisory consulting 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 advisory consulting firms.
Partial evidence: Its own public description names part of advisory consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory consulting 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 443 advisory consulting firms based in Greece

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Advisory consulting firms based in Greece at a glance

As of Sep 23, 2026

30.2%Verified-email coverage

1.9%Mobile-number coverage

12.2Average contacts per company

1-10Median size (employees)

30.5%Largest-city concentration · Athens

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

280

11-50

144

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

1,1840–30

42731–60

1661–90

090–180

8180+

Company record updated

Median 68.0d

00–30

1,92731–60

2,22161–90

1,00490–180

268180+

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 advisory consulting 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 “advisory consulting 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 advisory consulting 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 advisory 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 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, 1,635 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 23, 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.

Advisory consulting firms by metro

Advisory consulting firms in Athens135

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 advisory consulting 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 advisory consulting firms are there based in Greece?

RevenueBase identified 443 advisory 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?

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

Which city has the most advisory consulting firms?

Athens leads with 135 headquartered companies, followed by Thessaloniki (18) and Marousi (9).

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 1,635 verified decision-maker contacts tracked across these 443 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 23, 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.