Company lists · Data verified August 2026

Top 25 B2B marketing agencies based in Ireland

Name: B2B marketing agencies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 230 companies tracked

There are 230 B2B marketing agencies headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 1,155 professional contacts across them, including 321 with verified work emails and 71 with mobile numbers. Dublin is the largest hub.

This list covers B2B marketing agencies 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.

230Companies

1,155Contacts tracked

321Verified emails

71Mobile numbers

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The 25 largest B2B marketing agencies based in Ireland

Ranked by team size

Top 25 of 230 B2B marketing agencies 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	IDG Direct	n/a	201-500	196	11
2	Atomic	n/a	11-50	70	24
3	Oliver Ireland	Glasnevin	51-200	66	51
4	CMS Marketing	Dublin	11-50	58	17
5	Marketing Network Group	n/a	11-50	51	9
6	Buymedia	Dublin	11-50	28	15
7	Southern Marketing Design Media	Little Island	11-50	24	4
8	Strike Digital	Dun Laoghaire	11-50	23	13
9	Energy Communications Uk&i	n/a	11-50	14	8
10	The Smart Group	n/a	11-50	13	10
11	Vimar Digital Marketing	n/a	1-10	11	6
12	Bill Moss Data	Ringsend	11-50	11	4
13	Epresence Digital Marketing	n/a	1-10	10	8
14	CAT Media	Dublin	11-50	9	3
15	RED Pick Media	Galway	1-10	8	2
16	The Gorilla Digital LTD	n/a	1-10	7	4
17	Tinderpoint	Donnybrook	11-50	7	3
18	Salt Marketing	n/a	11-50	5	3
19	SPM Online Advertising	Ireland	11-50	4	3
20	The Engine Room	Dundrum	11-50	4	3
21	Focus Advertising IRL	Donnybrook	11-50	4	3
22	Lucidity Factory	Carlow	1-10	4	3
23	Urban Brand Creative	Dublin	1-10	4	3
24	IMS Marketing, A Locomotive Agency	Oranmore	11-50	3	2
25	GOOTA	Dublin	11-50	3	1

Showing 25 of 230 B2B marketing agencies based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 321 reachable decision-makers.

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B2B marketing agencies based in Ireland at a glance

As of Aug 28, 2026

1-10Median size (employees)

DublinLargest hub · 77 HQs

71Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

189

11-50

51-200

201-500

B2B marketing agencies by metro

Metro	Companies
B2B marketing agencies in Dublin	77
B2B marketing agencies in Cork	8
B2B marketing agencies in Ireland	7
B2B marketing agencies in Galway	6
B2B marketing agencies in Blackrock	3
B2B marketing agencies in Limerick	3
B2B marketing agencies in Naas	3

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 “B2B marketing agencies”, 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; 3 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 B2B marketing agencies are there based in Ireland?

There are 230 B2B marketing agencies headquartered in Ireland as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most B2B marketing agencies?

Dublin leads with 77 headquartered companies, followed by Cork (8) and Ireland (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 321 verified decision-maker contacts tracked across these 230 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.