Company lists · Data verified August 2026

Top 25 Environmental consulting firms based in Greece

Name: Environmental 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 146 companies tracked

There are 146 environmental consulting firms headquartered in Greece (RevenueBase, August 2026). RevenueBase tracks 1,390 professional contacts across them, including 461 with verified work emails and 20 with mobile numbers. Athens is the largest hub.

This list covers environmental 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.

146Companies

1,390Contacts tracked

461Verified emails

20Mobile numbers

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The 25 largest environmental consulting firms based in Greece

Ranked by team size

Top 25 of 146 environmental 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	Mesogeos S.A	Athens	201-500	104	50
2	Thalis ES SA	Athens	51-200	96	51
3	Draxis Environmental S.A	n/a	51-200	70	45
4	VCE Vienna Consulting Engineers ZT Gmbh	n/a	201-500	68	37
5	Sustchem S.A	n/a	11-50	51	40
6	Gaia SA	n/a	51-200	43	10
7	Enveco S.A	n/a	11-50	38	12
8	Ergoprolipsis	n/a	11-50	35	16
9	Envirometrics	n/a	11-50	34	24
10	Exergia S.A., Climate Change Consultants	n/a	11-50	28	17
11	Marnet S.A	n/a	11-50	27	16
12	Resnovae Consultants	n/a	11-50	19	5
13	Epta Environmental Engineers Consultants	n/a	11-50	16	11
14	Terra Neutral PC	n/a	11-50	15	11
15	Entec Green Economy Consultants GR	n/a	11-50	14	10
16	Envitec SA Technical & Environmental Projects	Athens	51-200	14	7
17	Oikom LTD	n/a	11-50	13	11
18	Terra Nova LTD	n/a	11-50	11	6
19	D. Argyropoulos Environmental Consultants SA	n/a	11-50	11	4
20	Advanced Planning-Consulting SA APC S.A	Athens	11-50	10	5
21	HM Engineering S.A	Athens	11-50	10	2
22	Innoveco Consulting Services	n/a	11-50	9	5
23	FGRID	Athens	11-50	9	4
24	I.Frantzis And Associates LTD	Athens	11-50	8	2
25	Ydrofili T.S.A	n/a	11-50	8	2

Showing 25 of 146 environmental consulting firms based in Greece

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Environmental consulting firms based in Greece at a glance

As of Aug 28, 2026

1-10Median size (employees)

AthensLargest hub · 41 HQs

20Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Environmental consulting firms by metro

Metro	Companies
Environmental consulting firms in Athens	41
Environmental consulting firms in Thessaloniki	7
Environmental consulting firms in Attica	3
Environmental consulting firms in Greece	2
Environmental consulting firms in Marousi	2
Environmental consulting firms in Larissa	1
Environmental consulting firms in Thermi Thessaloniki	1

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 “environmental 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; 0 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 environmental consulting firms are there based in Greece?

There are 146 environmental consulting firms headquartered in Greece as of August 2026 (RevenueBase).

What is the largest company on this list?

Mesogeos S.A, headquartered in Athens, tops this list with the largest team on record.

Which city has the most environmental consulting firms?

Athens leads with 41 headquartered companies, followed by Thessaloniki (7) and Attica (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 461 verified decision-maker contacts tracked across these 146 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.

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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.