Company lists · Data verified August 2026

Top 25 Consulting firms based in Greece

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 886 companies tracked

There are 886 consulting firms headquartered in Greece (RevenueBase, August 2026). RevenueBase tracks 8,185 professional contacts across them, including 2,827 with verified work emails and 221 with mobile numbers. Athens is the largest hub.

This list covers consulting firms headquartered in Greece, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

886Companies

8,185Contacts tracked

2,827Verified emails

221Mobile numbers

Unlock all 886 companies Free account · no credit card · 2 minutes

The 25 largest consulting firms based in Greece

Ranked by team size

Top 25 of 886 consulting firms based in Greece, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Adastra	Thessaloniki	1,001-5,000	1,572	872
2	Accenture Greece	Athens	1,001-5,000	1,177	529
3	Salfo & Associates SA	Athens	201-500	361	90
4	Real Consulting	Chalandri	501-1,000	279	157
5	Samaras & Associates Sa-Consulting Engineers	Athens	201-500	150	60
6	D ONE Data Driven Value Creation	Athens	51-200	118	76
7	Priority	Athens	51-200	113	70
8	Ballian Techniki SA	Athens	51-200	94	49
9	VCE Vienna Consulting Engineers ZT Gmbh	n/a	201-500	68	37
10	Noisis Development Consultant S.A	n/a	51-200	65	34
11	Professional Services Solutions	Glyfada	51-200	54	1
12	Gaia SA	n/a	51-200	43	10
13	Braincube SA	Athens	11-50	40	22
14	Q-Plan International	n/a	11-50	38	26
15	Revitup.Direct	n/a	11-50	36	20
16	Samaras & Partners Group Of Companies	Athens	201-500	31	6
17	Atlas Consulting	n/a	11-50	30	9
18	Exergia S.A., Climate Change Consultants	n/a	11-50	28	17
19	PRC Group The Management House S.A	n/a	51-200	28	4
20	Your Confidence S.A	n/a	51-200	27	14
21	DNG Consulting SA	Athens	11-50	27	12
22	Kleopas Alliott Business Consultants SA	n/a	11-50	25	11
23	Aethon Engineering	n/a	11-50	24	5
24	Rocketx	Athene	51-200	20	10
25	Pentasoft Consulting M.A.E	n/a	11-50	20	2

Showing 25 of 886 consulting firms based in Greece

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,827 reachable decision-makers.

Free account · no credit card

See all 886 companies

Consulting firms based in Greece at a glance

As of Aug 28, 2026

1-10Median size (employees)

AthensLargest hub · 305 HQs

221Contacts with mobile numbers

15Emails re-verified in last 30 days

Companies by employee count

1-10

606

11-50

246

51-200

201-500

501-1,000

1,001-5,000

Consulting firms by metro

Metro	Companies
Consulting firms in Athens	305
Consulting firms in Thessaloniki	38
Consulting firms in Marousi	15
Consulting firms in Chalandri	13
Consulting firms in Greece	10
Consulting firms in Attica	6
Consulting firms in Glyfada	5

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “consulting firms”, with match quality audited by blind human judging, and headquartered in Greece.
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: Contact records re-verify on a rolling cadence; 15 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many consulting firms are there based in Greece?

There are 886 consulting firms headquartered in Greece as of August 2026 (RevenueBase).

What is the largest company on this list?

Adastra, headquartered in Thessaloniki, tops this list with the largest team on record.

Which city has the most consulting firms?

Athens leads with 305 headquartered companies, followed by Thessaloniki (38) and Marousi (15).

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 2,827 verified decision-maker contacts tracked across these 886 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 886 consulting firms based in Greece. Start with a free account, no credit card.

Get the full list

Related lists

Consulting firms by geography

Browse the directory

Browse: Companies home · All Greece lists · All Consulting firms lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.