Company lists · Data verified August 2026

Top 25 Consulting firms based in Ireland

Name: 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 842 companies tracked

There are 842 consulting firms headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 7,134 professional contacts across them, including 2,672 with verified work emails and 392 with mobile numbers. Dublin is the largest hub.

This list covers 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.

842Companies

7,134Contacts tracked

2,672Verified emails

392Mobile numbers

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The 25 largest consulting firms based in Ireland

Ranked by team size

Top 25 of 842 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	Grant Thornton Ireland	Newbridge	1,001-5,000	2,451	1,324
2	Merc Partners	Clonskeagh	11-50	89	2
3	Nucleo	Dublin	51-200	85	53
4	Prochem Engineering	n/a	51-200	75	48
5	Baker Tilly Ireland	Cork	51-200	75	42
6	Strata Financial	Dublin	51-200	74	28
7	4oc	Dublin	51-200	57	49
8	Amatino	Cavan	11-50	50	32
9	Saros Consulting	n/a	51-200	47	31
10	Auxilia Group	Dublin	501-1,000	44	15
11	Gilroy Gannon Chartered Accountants	n/a	51-200	42	28
12	Leading Edge Group	n/a	11-50	42	21
13	Kube Group	Dublin	11-50	38	12
14	Niras Ireland	Castlebar	1,001-5,000	30	13
15	Search Talent	Dublin	11-50	23	10
16	DJF Engineering Services LTD	n/a	11-50	23	9
17	OMC	Galway	11-50	22	14
18	TXT International	n/a	11-50	22	5
19	Rethink Academy LTD	Dublin	11-50	18	2
20	OSL Butler Consulting Engineers	n/a	11-50	17	13
21	Taylor Mccarney Architects	Saleen Castlebar	11-50	16	12
22	AMQ Accountants & Auditors AMQ	Ennis	11-50	16	11
23	Clarion Consulting	Dublin	11-50	16	7
24	Independent Solutions	Dublin	11-50	16	2
25	Cdga Consultants	Little Island	11-50	15	6

Showing 25 of 842 consulting firms based in Ireland

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Consulting firms based in Ireland at a glance

As of Aug 28, 2026

1-10Median size (employees)

DublinLargest hub · 297 HQs

392Contacts with mobile numbers

9Emails re-verified in last 30 days

Companies by employee count

1-10

657

11-50

144

51-200

201-500

501-1,000

1,001-5,000

Consulting firms by metro

Metro	Companies
Consulting firms in Dublin	297
Consulting firms in Cork	53
Consulting firms in Limerick	20
Consulting firms in Galway	17
Consulting firms in Blackrock	16
Consulting firms in Dublin City	10
Consulting firms in Ireland	8

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 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; 9 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 Ireland?

There are 842 consulting firms headquartered in Ireland as of August 2026 (RevenueBase).

What is the largest company on this list?

Grant Thornton Ireland, headquartered in Newbridge, tops this list with the largest team on record.

Which city has the most consulting firms?

Dublin leads with 297 headquartered companies, followed by Cork (53) and Limerick (20).

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 2,672 verified decision-maker contacts tracked across these 842 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.