Company lists · Data verified August 2026

Top 25 Environmental consulting firms based in Ireland

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 108 companies tracked

There are 108 environmental consulting firms headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 1,724 professional contacts across them, including 692 with verified work emails and 64 with mobile numbers. Dublin is the largest hub.

This list covers environmental consulting firms headquartered in Ireland, 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.

108Companies

1,724Contacts tracked

692Verified emails

64Mobile numbers

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The 25 largest environmental consulting firms based in Ireland

Ranked by team size

Top 25 of 108 environmental consulting firms based in Ireland, 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	MKO	n/a	201-500	210	134
2	MWP	n/a	51-200	160	73
3	Ryan Hanley, NOW Stantec	Cork	51-200	116	77
4	Fehily Timoney And Company	Cork	51-200	115	1
5	Ayrton Group	Tallaght	51-200	75	38
6	Southern Scientific Services LTD	Galway	51-200	54	19
7	Axiseng	n/a	11-50	47	31
8	NEO Environmental LTD	Naas	11-50	46	33
9	Malone O'regan Environmental	Dublin	11-50	36	35
10	Woodrow Sustainable Solutions	Ballisodare	11-50	28	20
11	Enviroguide A DNV Company	n/a	11-50	23	13
12	Minerex Environmental LTD	Dublin	11-50	22	17
13	OMC	Galway	11-50	22	14
14	Aquafact	Galway	1-10	20	13
15	TMS Environment LTD	Tallaght	11-50	16	6
16	Rowan Engineering Consultants	n/a	11-50	15	12
17	Flynn Furney Environmental Consultants LTD	Kinsale	1-10	15	12
18	Cdga Consultants	Little Island	11-50	15	6
19	Speco Sustainability Consultancy	Oranmore	1-10	14	8
20	ENX	n/a	11-50	14	7
21	Clean Technology Centre, MTU	Cork	1-10	12	4
22	Doherty Finegan Kelly LTD	Dublin	11-50	11	10
23	Meehan Green, A KEO Company	n/a	11-50	11	6
24	Crocon Engineers LTD	Bantry	1-10	11	6
25	Carbon Complete	Galway	1-10	11	2

Showing 25 of 108 environmental consulting firms based in Ireland

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Environmental consulting firms based in Ireland at a glance

As of Aug 28, 2026

1-10Median size (employees)

DublinLargest hub · 18 HQs

64Contacts 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 Dublin	18
Environmental consulting firms in Cork	8
Environmental consulting firms in Galway	7
Environmental consulting firms in Bray	2
Environmental consulting firms in Sligo	2
Environmental consulting firms in Navan	2
Environmental consulting firms in Blackrock	2

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 Ireland.
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 Ireland?

There are 108 environmental consulting firms headquartered in Ireland as of August 2026 (RevenueBase).

What is the largest company on this list?

MKO, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most environmental consulting firms?

Dublin leads with 18 headquartered companies, followed by Cork (8) and Galway (7).

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 692 verified decision-maker contacts tracked across these 108 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.