Company lists · Data refreshed September 2026

Top 25 Full service marketing agencies based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 993 companies tracked

RevenueBase identified 993 full service marketing agencies headquartered in Ireland as of September 2026 and tracks 6,030 professional contacts across them, including 2,086 with verified work emails and 435 with mobile numbers. Dublin is the largest hub.

This list covers full service marketing agencies headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

993Companies

6,030Contacts tracked

2,086Verified emails

435Mobile numbers

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The 25 largest full service marketing agencies based in Ireland

Ranked by team size

Top 25 of 993 full service marketing agencies based in Ireland, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names full service marketing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	The Delta GroupIndirect evidence	Swords, Ireland	501-1,000	406
	“The Delta Group is committed to service excellence in-store, outdoor and online.” Source: company website · checked Sep 3, 2026
2	COREPartial evidence	Dublin, Ireland	201-500	283
	“Core is Ireland’s largest marketing communications company.” Source: company website · checked Sep 3, 2026
3	Connelly PartnersStrong evidence	Ballsbridge, Ireland	51-200	141
	“We’re Connelly Partners, an independent, full-service marketing agency spanning hubs in Boston, Dublin and Vancouver.” Source: company website · checked Sep 3, 2026
4	GranitePartial evidence	Dublin, Ireland	51-200	120
	“We’re a full service digital agency with 140+ experts delivering real tangible growth & value since 2008.” Source: company website · checked Sep 3, 2026
5	Wolfgang DigitalIndirect evidence	Dublin, Ireland	51-200	76
	“Wolfgang’s world-class reputation means delivering performance that transforms your business.” Source: company website · checked Sep 3, 2026
6	DPFOCPartial evidence	Ireland	51-200	67
	“DPFOC provides online marketing services to clients around the world.” Source: company website · checked Sep 3, 2026
7	Oliver IrelandIndirect evidence	Glasnevin, Ireland	51-200	66
	“OLIVER provides clients with dedicated agencies.” Source: company website · checked Sep 3, 2026
8	The Tenth MANPartial evidence	Ireland	51-200	57
	“Founded in Dublin in 2018 by marketing maverick Ken Robertson, The Tenth Man is a creative & film production business with offices in Dublin and London.” Source: company website · checked Sep 3, 2026
9	Javelin DublinStrong evidence	Smithfield, Ireland	11-50	51
	“We are a full service advertising agency, a direct marketing agency and a digital marketing agency all housed under one roof in Dublin’s Smithfield.” Source: company website · checked Sep 3, 2026
10	3 RockPartial evidence	Clondalkin, Ireland	51-200	40
	“We provide a full-circle brand experience through creative collaboration with our clients, we: Create: Manufacture: Deliver With workshops spanning over sq/ft, a team of highly…” Source: company website · checked Sep 3, 2026
11	ONE ProductionsPartial evidence	Ireland	11-50	40
	“One Productions is a Video Agency that specialise in Video Production and Video Marketing communications.” Source: company website · checked Sep 3, 2026
12	Spark Foundry, Part Of CoreIndirect evidence	Ireland	11-50	39
	“Spark Foundry is a leading Irish owned media planning and buying agency.” Source: company website · checked Sep 3, 2026
13	Matrix InternetStrong evidence	Dublin, Ireland	11-50	38
	“Matrix Internet is a full-service digital agency based in Dublin, Ireland with in-house specialists in planning/research, graphic design, development, online marketing, social…” Source: company website · checked Sep 3, 2026
14	DynamoIndirect evidence	Ireland	11-50	37
	“At Dynamo, we have a relentless desire to make beautiful, effective work, coupled with a zero tolerance for mediocre.” Source: company website · checked Sep 3, 2026
15	Legacy CommunicationsIndirect evidence	Dublin, Ireland	11-50	36
	“PRCA Agency of the Year 2024.” Source: company website · checked Sep 3, 2026
16	The Public HouseIndirect evidence	Dublin, Ireland	11-50	36
	“We are a crack team of brains for hire.” Source: company website · checked Sep 3, 2026
17	256 ContentPartial evidence	Ireland	11-50	34
	“256 is a dynamic, Dublin based, strategic content marketing agency.” Source: company website · checked Sep 3, 2026
18	Bbdo DublinIndirect evidence	Sandymount, Ireland	51-200	29
	“Who we are: Founded in 1966 as Irish International, we are a people-first agency with an unparalleled creative heritage, that continues to set standards for the industry with our…” Source: company website · checked Sep 3, 2026
19	Universal MediaPartial evidence	Dublin, Ireland	11-50	29
	“Universal Media is an independent full-service communications agency.” Source: company website · checked Sep 3, 2026
20	BuymediaIndirect evidence	Dublin, Ireland	11-50	28
	“Welcome to the future of Advertising for SMEs Buymedia can support you in not only booking your advertising campaigns but in strategising where best to allocate your budget.” Source: company website · checked Sep 3, 2026
21	Hopkins CommunicationsPartial evidence	Ireland	11-50	24
	“Irish Marketing Communications Agency.” Source: company website · checked Sep 3, 2026
22	Southern Marketing Design MediaIndirect evidence	Little Island, Ireland	11-50	24
	“At Southern we bring your brand story to life, reaching your customers and moving them to action.” Source: company website · checked Sep 3, 2026
23	Trinity Brand GroupPartial evidence	Dublin, Ireland	11-50	21
	“Trinity Brand Group is a full-service agency of strategists, storytellers, and creatives that helps clients build powerful brands, engage consumers and drive business growth…” Source: company website · checked Sep 3, 2026
24	Havas DublinIndirect evidence	Dublin, Ireland	11-50	19
	“Havas is a diverse group of creative innovators, strategists and digital obsessives based in Havas Village, our HQ in Dublin, also home to Havas Media, Gate One and h/Advisors…” Source: company website · checked Sep 3, 2026
25	Intense MarketingPartial evidence	Ireland	11-50	18
	“Intense Marketing is a cutting edge marketing company based in Dublin, taking a new approach in a new economy.” Source: company website · checked Sep 3, 2026

Showing 25 of 993 full service marketing agencies based in Ireland

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Full service marketing agencies based in Ireland at a glance

As of Sep 3, 2026

1-10Median size (employees)

DublinLargest hub · 313 HQs

435Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

788

11-50

176

51-200

201-500

501-1,000

5,001-10,000

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among full service marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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: Companies headquartered in Ireland whose own description of what they do matches “full service marketing agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among full service marketing agencies, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 2,086 across the full list. 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 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Full service marketing agencies by metro

Full service marketing agencies in Dublin313
Full service marketing agencies in Cork46
Full service marketing agencies in Galway31

Frequently asked

How many full service marketing agencies are there based in Ireland?

RevenueBase identified 993 full service marketing agencies headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

The Delta Group, headquartered in Swords, tops this list with the largest team on record.

Which city has the most full service marketing agencies?

Dublin leads with 313 headquartered companies, followed by Cork (46) and Galway (31).

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 2,086 verified decision-maker contacts tracked across these 993 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 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.