Company lists · Data refreshed September 2026

Top 25 Professional service firms based in Ireland

RevenueBase identified 45 company matches for professional service firms associated with Ireland as of September 2026 and tracks 6,423 professional contacts across them, including 3,625 with verified work emails. Cork is the largest hub.

This list covers company matches for professional service firms associated with Ireland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
45Companies
6,423Contacts tracked
3,625Verified emails
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The 25 largest professional service firms based in Ireland

Ranked by team size
Top 25 of 45 company matches for professional service firms based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDublin 2, IrelandHQ recorded Sep 20, 20261,001-5,0002,952 contacts →

Exact match

“KPMG is a leading provider of professional services, offering a range of audit, tax and advisory services to a broad range of domestic and international clients across all sectors…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchDublin, IrelandHQ recorded Sep 20, 20261,001-5,0002,374 contacts →

Exact match

“In Ireland, Grant Thornton Ireland and Grant Thornton Corporate Finance Limited (and their respective subsidiary/affiliate entities) operate under an alternative practice…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchDublin, IrelandHQ recorded Sep 20, 2026201-500521 contacts →

Exact match

“BDO Ireland LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchDublin 18, IrelandHQ recorded Sep 20, 202651-200119 contacts →

Exact match

“One brand.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchCork, IrelandHQ recorded Sep 20, 202651-20074 contacts →

Exact match

“At Baker Tilly, we care about you and the impact you make.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchDundalk, IrelandHQ recorded Sep 20, 202651-20068 contacts →

Exact match

“UHY FDW is a leading audit, tax and advisory practice in Ireland, driven to achieve a better future together, for our people, our clients and our communities.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchSligo, IrelandHQ recorded Sep 20, 202651-20041 contacts →

Exact match

“Gilroy Gannon brings to its clients a unique partnership - people drawn together from the major international accounting firms, industry and small practice with the common goal of…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchTullamore, IrelandHQ recorded Sep 20, 202611-5025 contacts →

Exact match

“BCA provide a full range of proactive financial, taxation, business advisory, audit, company secretarial and commercial services to our broad range of clients.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLimerick, IrelandHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“HDS, founded in 2004, is an established practice of professional advisors with offices at RiverPoint, one of Limerick’s most recognisable and prestigious landmark buildings.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchMullingar, IrelandHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“At Stephens Cooke & Associates we are committed to providing a comprehensive range of services to ensure that we are not simply a service provider, but a firm that work in…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchBlackrock, IrelandHQ recorded Sep 20, 20261-1015 contacts →

Exact match

“Chartered accountants, auditors and tax consultants”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchClonmel, IrelandHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“At OGBP we aim to understand our clients’ business`s and work with them in achieving their goals.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchKildare Town, IrelandHQ recorded Sep 20, 202611-5013 contacts →

Exact match

“McMahon Auditors Accountants is a well-established firm of accountants, tax advisors, and business consultants, proudly serving clients from our offices in Kildare, Naas, and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchSutton, IrelandHQ recorded Sep 20, 202611-5011 contacts →

Exact match

“We focus on building strong relationships with our personal and business clients by getting to know them, their plans and their aspirations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchDublin, IrelandHQ recorded Sep 20, 20261-108 contacts →

Exact match

“Qualified Accountants, Business Advisors, and Management Consultants enabling Businesses Grow by helping them with Accounting and Tax compliance needs.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchCork, IrelandHQ recorded Sep 20, 202611-507 contacts →

Exact match

“At FitzGerald Legal & Advisory you get both specialised legal and advisory knowledge and full service representation as FitzGerald Legal & Advisory is a professional firm with…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchDublin, IrelandHQ recorded Sep 20, 202611-507 contacts →

Exact match

“Welcome to Corvidae We are the only professional services firm where you can access high quality Accounting, Tax, and HR services all in one place.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchDublin 5, IrelandHQ recorded Sep 20, 202611-506 contacts →

Exact match

“J.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchCork, IrelandHQ recorded Sep 20, 20261-105 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchCo Cork, IrelandHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Accountants for small, medium and large businesses Tax Consultants and tax planning advice Business consultants for existing and start up businesses Farming tax and accounts…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchIrelandHQ recorded Sep 20, 202611-503 contacts →

Exact match

“Chartered Accountants, Registered Auditors and Business Advisors Ormsby and Rhodes is one of the longest established Accounting Firms in Ireland.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchWexford Town, IrelandHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Michael O’Leary & company was founded in Wexford in 1980.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchClonmel, IrelandHQ recorded Sep 20, 20261-103 contacts →

Exact match

“AAL are an innovative and professional practice that provide Advisory, Accountancy & Tax, Management Information Systems, and Organisation and Leadership Services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchCo Waterford, IrelandHQ recorded Sep 20, 20261-102 contacts →

Exact match

“O'Dwyer & Co.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchCork, IrelandHQ recorded Sep 20, 202611-501 contacts →

Exact match

“We understand that knowledge is everything and we help clients benefit from it by applying knowledge and expertise from relevant disciplines within the firm and tailoring it to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 45 professional service firms based in Ireland

See the full list, filter by size, metro and specialty, and access 3,625 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional service firms based in Ireland at a glance

As of Sep 20, 2026
56.4%Verified-email coverage
142.7Average contacts per company
11-50Median size (employees)
11.1%Largest-city concentration · Cork
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
19
51-200
4
201-500
3
1,001-5,000
2

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 45 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Ireland whose business descriptions match “professional service firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,625 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “professional service firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional service firms are there based in Ireland?

RevenueBase identified 45 company matches for professional service firms associated with Ireland as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kpmg Ireland tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most professional service firms?

Cork leads with 5 company records, followed by Dublin (5) and Clonmel (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,625 professional contacts with verified work emails tracked across these 45 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.