This list contains corporate groups and holding companies based in Ireland. These firms operate across various sectors, including technology, entertainment, utilities, and construction. Notable companies include Cimpress, which invests in mass-customization businesses; Keywords Studios, a creative services provider for the video games industry; Flutter Entertainment, a global provider of sports betting and gaming; and ESB, focused on providing sustainable electricity supplies.
The data shows a strong concentration of headquarters in Dublin, with many of these companies having a global reach. For instance, DCC plc is a global group providing solutions in energy, healthcare, and technology across 22 countries, while Dole plc grows, sources, packs, markets, and distributes fresh produce globally.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Cimpresscimpress.com
Cimpress plc invests in mass-customization businesses, providing personalized products to meet individual customer needs with near mass production efficiency |
12,460 | |||
| 2 |
Keywords Studioskeywordsstudios.com
A leading creative services provider for the global video games industry, offering end-to-end solutions and support across all aspects of game development |
11,828 | |||
| 3 |
Flutter Entertainmentflutter.com
Global provider of sports betting, gaming, and entertainment, serving over 18 million customers worldwide through leading consumer brands Vision to be global online leader |
7,681 | |||
| 4 |
Descon Engineering Limiteddescon.com
An integrated engineering services and manufacturing company operating in Pakistan and the Middle East, delivering client-specific solutions for Energy, Infrastructure, and Process industries |
6,444 | |||
| 5 | 4,937 | ||||
| 6 |
Flutter Internationalcareers.flutterinternational.com
Global sports betting, gaming, and entertainment provider with innovative brands focused on championing play, empowerment, and teamwork for millions of customers worldwide |
4,076 | |||
| 7 |
DCC plcdccenergy.com
A global group providing solutions in energy, healthcare, and technology sectors through diverse businesses across 22 countries, driving long-term value creation |
3,820 | |||
| 8 |
An Postanpost.com
Provides postal, communication, retail, and financial services across Ireland with a large national network and over 10,000 employees. |
3,117 | |||
| 9 |
Jones Engineeringjoneseng.com
Multi-disciplined engineering contracting company providing a complete range of engineering and building services installations globally, working with multi-nationals and delivering projects safely |
3,019 | |||
| 10 |
John Sisk & Son Ltdsisk.com
Innovative engineering and construction company with extensive operations across Ireland, UK, and Europe, providing comprehensive construction services since 1859. |
2,593 | |||
| 11 |
Marcus Evans Groupmarcusevans.com
A global leader in business intelligence, offering diverse portfolios including summits, conferences, professional training, and market intelligence to help clients achieve strategic goals |
2,543 | |||
| 12 |
Origin Enterprises Plcoriginenterprises.com
Provides technically-led agricultural solutions promoting sustainable land use, empowering customers across multiple countries to maximize land potential. |
1,956 | |||
| 13 | 1,768 | ||||
| 14 |
Dole plcdoleplc.com
The company grows, sources, packs, markets, and distributes fresh produce globally, focusing on quality, sustainability, and healthy eating from farm to fork. |
1,306 | |||
| 15 |
ABP Food Groupabpfoodgroup.com
Largest beef processor in Ireland and UK with renewable energy, pet food, and protein divisions employing over 14,000 people. |
1,300 | |||
| 16 |
Ivy Technologyivytech.com
Global provider of electronics repair and service for tech, med-tech, and telecom companies with innovative, efficient, and trustworthy solutions. |
1,067 | |||
| 17 | 1,044 | ||||
| 18 |
Keelingskeelings.com
An Irish family business in the fresh produce industry since 1926, offering growing, sourcing, sales, distribution, and ERP software solutions globally |
953 | |||
| 19 |
Uniphar Supply Chain & Retailuniphar.ie
A rapidly growing Irish organization specializing in healthcare, with divisions in wholesale and distribution, serving Irish pharmacies and various industries |
878 | |||
| 20 |
DCC Technologydcctechnology.com
A leading technology distributor offering consumer, business, and enterprise products from top brands, backed by a global parent company operating in 23 countries |
864 | |||
| 21 |
ICDS Groupicds.ie
Specializing in staffing solutions for Construction, Civil, Manufacturing, Engineering, Scientific, Medical, Technical, Food, IT, and Finance industries worldwide since 1976 |
858 | |||
| 22 |
Moog Controls Corporation (Philippine Branch)moog.com
A worldwide designer and integrator of precision motion control products and systems for various industries, with a strong focus on culture and integrity |
779 | |||
| 23 |
Musgrave Retail Partners Irelandmusgravegroup.com
Leading grocery retail and wholesale partner supporting independent stores with local products, innovative programs, and a focus on health and wellbeing |
743 | |||
| 24 |
Dairygold Co-Operative Society Ltddairygold.ie
Farmer owned cooperative processing large volumes of milk, operating internationally with significant turnover and extensive employee base. |
703 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 25 |
Glen Dimplexglendimplex.com
Manufacturing heating, ventilation, flame, precision cooling, and consumer appliances with innovative solutions to improve everyday life and energy efficiency. |
664 | |||
| 26 |
Masterlinkmasterlink.ie
Leading Irish logistics service provider offering nationwide delivery, warehousing, order fulfillment, and reverse logistics with a fleet of over 120 vehicles and 350 employees |
582 | |||
| 27 |
Sherry FitzGeraldsherryfitz.ie
A leading property advisory firm in Ireland, offering a full range of services nationwide, backed by a team of talented professionals and trusted market insights |
534 | |||
| 28 |
Mergon Groupmergon.com
Manufacturer of high-quality plastic components for automotive, medical, and industrial products, serving global brands with innovative design and sustainable solutions |
533 | |||
| 29 |
AXA Irelandaxa.ie
A leading insurance company in Ireland offering a wide range of insurance products to protect homes, cars, businesses, and farms Part of AXA Group |
489 | |||
| 30 |
Chadwicks Groupchadwicksgroup.ie
Leading builders' merchant in Ireland with over 50 stores and 200 years of expertise providing a wide range of construction materials |
462 | |||
| 31 |
EPS Groupepswater.ie
An international water infrastructure specialist offering end-to-end services in water, wastewater, and clean technology sectors to various clients globally |
434 | |||
| 32 |
Uniphar Medtechunipharmedtech.com
Leading medical device distributor offering best-in-class products and services across multiple specialties in public and private healthcare with a presence in 21 markets |
433 | |||
| 33 |
Glenveagh Properties plcglenveagh.ie
Leading Irish homebuilder focused on delivering sustainable, high-quality homes in diverse communities through innovation, integration, and a commitment to customer satisfaction |
420 | |||
| 34 |
Viatel Technology Groupviatel.com
Delivers managed security, networking, cloud, and communication services, helping businesses optimize operations and achieve their potential, supported by certified experts. |
409 | |||
| 35 | 402 | ||||
| 36 |
Excel Recruitmentexcelrecruitment.com
Excel Recruitment provides talented workforce solutions across various industries, specializing in Retail, IT, Hospitality, Healthcare, and more, with a track record of industry recognition and awards |
391 | |||
| 37 |
MTM Engineering Ltdmtm-engineering.com
Specializing in electrical and mechanical contracting services internationally, with a focus on main cable installation, termination, and post-weld heat treatment |
389 | |||
| 38 |
Grafton Group plcgraftonplc.com
An international distributor of building materials with leading positions in UK, Ireland, and the Netherlands, also manufacturing dry mortar and operating DIY retail stores |
384 | |||
| 39 |
ATAatagroup.com
Design, manufacture, and distribution of high-performance cutting tools and material removal solutions for diverse global industries. |
382 | |||
| 40 |
Trinity Biotechtrinitybiotech.com
Specializing in diagnostic test kits and equipment, we prioritize quality and efficacy to provide reliable diagnosis, aiming for an inclusive workplace with varied roles |
381 | |||
| 41 |
Ei Electronicseielectronics.com
Manufacturing and exporting home life safety devices with integrated research, development, and marketing based in Ireland, serving global markets. |
380 | |||
| 42 |
GMC Utilities Groupgmcirl.com
The GMC Utilities Group offers a complete service and turnkey solutions in utility and civil engineering, handling projects in Ireland and the UK |
348 | |||
| 43 | 331 | ||||
| 44 |
Dublin Aerospacedublinaerospace.com
A global leader in Aerospace MRO services specializing in APU, Base Maintenance, IDG, and Landing Gear repair & overhaul with multiple industry awards and approvals |
331 | |||
| 45 |
Anthony Nicholas Groupfraserhart.co.uk
A trusted group with two jewellery companies, known for exceptional customer service, high quality, and unique design, creating treasured moments for over 80 years |
329 | |||
| 46 |
Kingsbridge Healthcare Groupkingsbridgeprivatehospital.com
A premier private healthcare group in Northern Ireland, dedicated to providing top-quality healthcare solutions emphasizing patient care and professional excellence |
325 | |||
| 47 |
Abbey Groupabbeygroupdmc.com
A travel group operating in Dublin, Edinburgh, and London, specializing in selling Ireland and UK destinations to the global travel industry |
318 | |||
| 48 |
Healthcare 21 Grouphealthcare21.eu
Specialist supplier of healthcare solutions, consumables, devices, and services across various market segments, focusing on optimizing clinical outcomes and patient care |
303 | |||
| 49 |
Energia Groupenergiagroup.com
Integrated energy utility focusing on renewable technologies, flexible generation, and customer solutions, serving homes and businesses across Ireland. |
278 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in Ireland
- The largest companies in Ireland 1,769
- Multinational companies in Ireland 564
- SaaS companies in Ireland 203
- Software Development companies in Ireland 176
- Retail chains in Ireland 166
- Financial services firms in Ireland 143
- Financial Services companies in Ireland 143
- Professional services firms in Ireland 126
- Manufacturers in Ireland 125
- Companies with in-house R&D in Ireland 120
- Critical infrastructure operators in Ireland 118
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- Public sector organisations in Ireland 88
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- Education providers in Ireland 83
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- Healthcare providers in Ireland 69
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- Distributors and wholesalers in Ireland 63
- Subscription businesses in Ireland 62
- Hardware manufacturers in Ireland 61