# 49 leading corporate groups and holding companies in Ireland

Tamtam tracks 55 corporate groups and holding companies headquartered in Ireland. This list ranks the 49 largest by number of employees on LinkedIn, led by Cimpress, Keywords Studios and Flutter Entertainment. Their median headcount is 664. Half of them were founded in 1988 or later. The most common headquarters are Dublin (23), Belfast (2) and Cork (2).

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.

🇮🇪 Ireland · 49 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Cimpress](https://www.tamtam.ai/c/cimpress) (cimpress.com)<br>Cimpress plc invests in mass-customization businesses, providing personalized products to meet individual customer needs with near mass production efficiency | Technology, Information and Internet | 🇮🇪 Dundalk | 12,460 | 1995 |
| 2 | [Keywords Studios](https://www.tamtam.ai/c/keywords-studios) (keywordsstudios.com)<br>A leading creative services provider for the global video games industry, offering end-to-end solutions and support across all aspects of game development | Computer Games | 🇮🇪 Dublin | 11,828 | 1998 |
| 3 | [Flutter Entertainment](https://www.tamtam.ai/c/flutter-entertainment) (flutter.com)<br>Global provider of sports betting, gaming, and entertainment, serving over 18 million customers worldwide through leading consumer brands Vision to be global online leader | Entertainment Providers | 🇮🇪 Dublin | 7,681 |  |
| 4 | [Descon Engineering Limited](https://www.tamtam.ai/c/descon-engineering-limited) (descon.com)<br>An integrated engineering services and manufacturing company operating in Pakistan and the Middle East, delivering client-specific solutions for Energy, Infrastructure, and Process industries | Education | 🇮🇪 Lahore | 6,444 |  |
| 5 | [ESB](https://www.tamtam.ai/c/esb) (esb.ie)<br>A company focused on providing secure, sustainable, and affordable electricity supplies to enhance societal, economic well-being, driven by innovation and collaboration for a brighter future | Utilities | 🇮🇪 Dublin | 4,937 | 1927 |
| 6 | [Flutter International](https://www.tamtam.ai/c/flutter-international) (careers.flutterinternational.com)<br>Global sports betting, gaming, and entertainment provider with innovative brands focused on championing play, empowerment, and teamwork for millions of customers worldwide | Entertainment Providers | 🇮🇪 Dublin | 4,076 |  |
| 7 | [DCC plc](https://www.tamtam.ai/c/dcc-plc) (dccenergy.com)<br>A global group providing solutions in energy, healthcare, and technology sectors through diverse businesses across 22 countries, driving long-term value creation | Executive Offices | 🇮🇪 Dublin | 3,820 | 1976 |
| 8 | [An Post](https://www.tamtam.ai/c/an-post) (anpost.com)<br>Provides postal, communication, retail, and financial services across Ireland with a large national network and over 10,000 employees. | Utilities | 🇮🇪 Dublin | 3,117 |  |
| 9 | [Jones Engineering](https://www.tamtam.ai/c/jones-engineering) (joneseng.com)<br>Multi-disciplined engineering contracting company providing a complete range of engineering and building services installations globally, working with multi-nationals and delivering projects safely | Construction | 🇮🇪 Dublin | 3,019 | 1890 |
| 10 | [John Sisk & Son Ltd](https://www.tamtam.ai/c/john-sisk-and-son-ltd) (sisk.com)<br>Innovative engineering and construction company with extensive operations across Ireland, UK, and Europe, providing comprehensive construction services since 1859. | Construction | 🇮🇪 Dublin | 2,593 | 1859 |
| 11 | [Marcus Evans Group](https://www.tamtam.ai/c/marcus-evans-group) (marcusevans.com)<br>A global leader in business intelligence, offering diverse portfolios including summits, conferences, professional training, and market intelligence to help clients achieve strategic goals | Events Services | 🇮🇪 Dublin | 2,543 | 1983 |
| 12 | [Origin Enterprises Plc](https://www.tamtam.ai/c/origin-enterprises-plc) (originenterprises.com)<br>Provides technically-led agricultural solutions promoting sustainable land use, empowering customers across multiple countries to maximize land potential. | Holding Companies | 🇮🇪 Dublin | 1,956 |  |
| 13 | [Oldcastle](https://www.tamtam.ai/c/oldcastle) (crh.com)<br>Leading provider of building materials solutions worldwide, offering materials, products, and services for infrastructure, commercial projects, and outdoor living | Wholesale Building Materials | 🇮🇪 Dublin | 1,768 |  |
| 14 | [Dole plc](https://www.tamtam.ai/c/dole-plc) (doleplc.com)<br>The company grows, sources, packs, markets, and distributes fresh produce globally, focusing on quality, sustainability, and healthy eating from farm to fork. | Food and Beverage Manufacturing | 🇮🇪 Dublin | 1,306 |  |
| 15 | [ABP Food Group](https://www.tamtam.ai/c/abp-food-group) (abpfoodgroup.com)<br>Largest beef processor in Ireland and UK with renewable energy, pet food, and protein divisions employing over 14,000 people. | Food and Beverage Manufacturing | 🇮🇪 Ardee | 1,300 | 1954 |
| 16 | [Ivy Technology](https://www.tamtam.ai/c/ivy-technology) (ivytech.com)<br>Global provider of electronics repair and service for tech, med-tech, and telecom companies with innovative, efficient, and trustworthy solutions. | Computer Hardware Manufacturing | 🇮🇪 Dublin | 1,067 |  |
| 17 | [Translink](https://www.tamtam.ai/c/translink-belfast) (linktr.ee)<br>The company provides integrated public transport services in Northern Ireland, coordinating bus and rail services to promote sustainable transportation options | Truck Transportation | 🇮🇪 Belfast | 1,044 | 1996 |
| 18 | [Keelings](https://www.tamtam.ai/c/keelings) (keelings.com)<br>An Irish family business in the fresh produce industry since 1926, offering growing, sourcing, sales, distribution, and ERP software solutions globally | Food and Beverage Services | 🇮🇪 Dublin | 953 | 1926 |
| 19 | [Uniphar Supply Chain & Retail](https://www.tamtam.ai/c/uniphar-supply-chain-and-retail) (uniphar.ie)<br>A rapidly growing Irish organization specializing in healthcare, with divisions in wholesale and distribution, serving Irish pharmacies and various industries | Pharmaceutical Manufacturing | 🇮🇪 Dublin | 878 | 1994 |
| 20 | [DCC Technology](https://www.tamtam.ai/c/dcc-technology) (dcctechnology.com)<br>A leading technology distributor offering consumer, business, and enterprise products from top brands, backed by a global parent company operating in 23 countries | Technology, Information and Media | 🇮🇪 Burnley | 864 |  |
| 21 | [ICDS Group](https://www.tamtam.ai/c/icds-group) (icds.ie)<br>Specializing in staffing solutions for Construction, Civil, Manufacturing, Engineering, Scientific, Medical, Technical, Food, IT, and Finance industries worldwide since 1976 | Staffing and Recruiting | 🇮🇪 Dublin | 858 | 1976 |
| 22 | [Moog Controls Corporation (Philippine Branch)](https://www.tamtam.ai/c/moog-controls-corporation-philippine-branch) (moog.com)<br>A worldwide designer and integrator of precision motion control products and systems for various industries, with a strong focus on culture and integrity | Aviation and Aerospace Component Manufacturing | 🇮🇪 Baguio City | 779 | 1984 |
| 23 | [Musgrave Retail Partners Ireland](https://www.tamtam.ai/c/musgrave-retail-partners-ireland) (musgravegroup.com)<br>Leading grocery retail and wholesale partner supporting independent stores with local products, innovative programs, and a focus on health and wellbeing | Retail | 🇮🇪 Cork | 743 |  |
| 24 | [Dairygold Co-Operative Society Ltd](https://www.tamtam.ai/c/dairygold-co-operative-society-ltd) (dairygold.ie)<br>Farmer owned cooperative processing large volumes of milk, operating internationally with significant turnover and extensive employee base. | Dairy Product Manufacturing | 🇮🇪 Mitchelstown | 703 | 1990 |
| 25 | [Glen Dimplex](https://www.tamtam.ai/c/glen-dimplex) (glendimplex.com)<br>Manufacturing heating, ventilation, flame, precision cooling, and consumer appliances with innovative solutions to improve everyday life and energy efficiency. | Appliances, Electrical, and Electronics Manufacturing | 🇮🇪 Cloghran | 664 |  |
| 26 | [Masterlink](https://www.tamtam.ai/c/masterlink) (masterlink.ie)<br>Leading Irish logistics service provider offering nationwide delivery, warehousing, order fulfillment, and reverse logistics with a fleet of over 120 vehicles and 350 employees | Transportation, Logistics, Supply Chain and Storage | 🇮🇪 Cork | 582 | 1992 |
| 27 | [Sherry FitzGerald](https://www.tamtam.ai/c/sherry-fitzgerald) (sherryfitz.ie)<br>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 | Real Estate | 🇮🇪 Sandyford | 534 |  |
| 28 | [Mergon Group](https://www.tamtam.ai/c/mergon-group) (mergon.com)<br>Manufacturer of high-quality plastic components for automotive, medical, and industrial products, serving global brands with innovative design and sustainable solutions | Plastics Manufacturing | 🇮🇪 Castlepollard | 533 | 1981 |
| 29 | [AXA Ireland](https://www.tamtam.ai/c/axa-ireland) (axa.ie)<br>A leading insurance company in Ireland offering a wide range of insurance products to protect homes, cars, businesses, and farms Part of AXA Group | Insurance | 🇮🇪 Dublin | 489 |  |
| 30 | [Chadwicks Group](https://www.tamtam.ai/c/chadwicks-group) (chadwicksgroup.ie)<br>Leading builders' merchant in Ireland with over 50 stores and 200 years of expertise providing a wide range of construction materials | Wholesale Building Materials | 🇮🇪 Clondalkin | 462 | 1818 |
| 31 | [EPS Group](https://www.tamtam.ai/c/eps-group) (epswater.ie)<br>An international water infrastructure specialist offering end-to-end services in water, wastewater, and clean technology sectors to various clients globally | Manufacturing | 🇮🇪 Mallow | 434 | 1968 |
| 32 | [Uniphar Medtech](https://www.tamtam.ai/c/uniphar-medtech) (unipharmedtech.com)<br>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 | Hospitals and Health Care | 🇮🇪 Northside | 433 | 2005 |
| 33 | [Glenveagh Properties plc](https://www.tamtam.ai/c/glenveagh-properties-plc) (glenveagh.ie)<br>Leading Irish homebuilder focused on delivering sustainable, high-quality homes in diverse communities through innovation, integration, and a commitment to customer satisfaction | Construction | 🇮🇪 Maynooth | 420 | 2017 |
| 34 | [Viatel Technology Group](https://www.tamtam.ai/c/viatel-technology-group) (viatel.com)<br>Delivers managed security, networking, cloud, and communication services, helping businesses optimize operations and achieve their potential, supported by certified experts. | IT Services and IT Consulting | 🇮🇪 Dublin | 409 |  |
| 35 | [Aryza](https://www.tamtam.ai/c/aryza) (aryza.com)<br>The company provides comprehensive solutions for debt management, insolvency, and loans, fostering strong relationships between businesses and consumers | IT Services and IT Consulting | 🇮🇪 Ballycoolin | 402 | 2002 |
| 36 | [Excel Recruitment](https://www.tamtam.ai/c/excel-recruitment) (excelrecruitment.com)<br>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 | Staffing and Recruiting | 🇮🇪 Dublin | 391 | 2001 |
| 37 | [MTM Engineering Ltd](https://www.tamtam.ai/c/mtm-engineering-ltd) (mtm-engineering.com)<br>Specializing in electrical and mechanical contracting services internationally, with a focus on main cable installation, termination, and post-weld heat treatment | Engineering Services | 🇮🇪 Slane | 389 | 1997 |
| 38 | [Grafton Group plc](https://www.tamtam.ai/c/grafton-group-plc) (graftonplc.com)<br>An international distributor of building materials with leading positions in UK, Ireland, and the Netherlands, also manufacturing dry mortar and operating DIY retail stores | Wholesale Building Materials | 🇮🇪 Sandyford | 384 |  |
| 39 | [ATA](https://www.tamtam.ai/c/ata-cavan) (atagroup.com)<br>Design, manufacture, and distribution of high-performance cutting tools and material removal solutions for diverse global industries. | Industrial Machinery Manufacturing | 🇮🇪 Cavan | 382 | 1963 |
| 40 | [Trinity Biotech](https://www.tamtam.ai/c/trinity-biotech) (trinitybiotech.com)<br>Specializing in diagnostic test kits and equipment, we prioritize quality and efficacy to provide reliable diagnosis, aiming for an inclusive workplace with varied roles | Medical Equipment Manufacturing | 🇮🇪 Bray | 381 | 1992 |
| 41 | [Ei Electronics](https://www.tamtam.ai/c/ei-electronics) (eielectronics.com)<br>Manufacturing and exporting home life safety devices with integrated research, development, and marketing based in Ireland, serving global markets. | Appliances, Electrical, and Electronics Manufacturing | 🇮🇪 Shannon | 380 | 1988 |
| 42 | [GMC Utilities Group](https://www.tamtam.ai/c/gmc-utilities-group) (gmcirl.com)<br>The GMC Utilities Group offers a complete service and turnkey solutions in utility and civil engineering, handling projects in Ireland and the UK | Utilities | 🇮🇪 Ballycoolin | 348 |  |
| 43 | [Gill](https://www.tamtam.ai/c/gill) (gill.ie)<br>Leading Irish publisher and distributor, specializing in educational and general interest books Provides distribution services to over 50 publishers | Book and Periodical Publishing | 🇮🇪 Dublin | 331 | 1856 |
| 44 | [Dublin Aerospace](https://www.tamtam.ai/c/dublin-aerospace) (dublinaerospace.com)<br>A global leader in Aerospace MRO services specializing in APU, Base Maintenance, IDG, and Landing Gear repair & overhaul with multiple industry awards and approvals | Airlines and Aviation | 🇮🇪 Dublin | 331 | 2009 |
| 45 | [Anthony Nicholas Group](https://www.tamtam.ai/c/anthony-nicholas-group) (fraserhart.co.uk)<br>A trusted group with two jewellery companies, known for exceptional customer service, high quality, and unique design, creating treasured moments for over 80 years | Retail Luxury Goods and Jewelry | 🇮🇪 Dublin | 329 | 1936 |
| 46 | [Kingsbridge Healthcare Group](https://www.tamtam.ai/c/kingsbridge-healthcare-group) (kingsbridgeprivatehospital.com)<br>A premier private healthcare group in Northern Ireland, dedicated to providing top-quality healthcare solutions emphasizing patient care and professional excellence | Hospitals and Health Care | 🇮🇪 Belfast | 325 | 2004 |
| 47 | [Abbey Group](https://www.tamtam.ai/c/abbey-group) (abbeygroupdmc.com)<br>A travel group operating in Dublin, Edinburgh, and London, specializing in selling Ireland and UK destinations to the global travel industry | Travel Arrangements | 🇮🇪 Dublin | 318 | 1978 |
| 48 | [Healthcare 21 Group](https://www.tamtam.ai/c/healthcare-21-group) (healthcare21.eu)<br>Specialist supplier of healthcare solutions, consumables, devices, and services across various market segments, focusing on optimizing clinical outcomes and patient care | Hospitals and Health Care | 🇮🇪 Co. Cork | 303 | 2003 |
| 49 | [Energia Group](https://www.tamtam.ai/c/energia-group) (energiagroup.com)<br>Integrated energy utility focusing on renewable technologies, flexible generation, and customer solutions, serving homes and businesses across Ireland. | Utilities | 🇮🇪 Blanchardstown | 278 | 2019 |

## 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](https://www.tamtam.ai/l/largest-companies-ireland) (1,769)
- [Multinational companies in Ireland](https://www.tamtam.ai/l/multinational-companies-ireland) (564)
- [SaaS companies in Ireland](https://www.tamtam.ai/l/saas-companies-ireland) (203)
- [Software Development companies in Ireland](https://www.tamtam.ai/l/software-development-companies-ireland) (176)
- [Retail chains in Ireland](https://www.tamtam.ai/l/retail-chains-ireland) (166)
- [Financial services firms in Ireland](https://www.tamtam.ai/l/financial-services-firms-ireland) (143)
- [Financial Services companies in Ireland](https://www.tamtam.ai/l/financial-services-companies-ireland) (143)
- [Professional services firms in Ireland](https://www.tamtam.ai/l/professional-services-firms-ireland) (126)
- [Manufacturers in Ireland](https://www.tamtam.ai/l/manufacturers-ireland) (125)
- [Companies with in-house R&D in Ireland](https://www.tamtam.ai/l/r-and-d-companies-ireland) (120)
- [Critical infrastructure operators in Ireland](https://www.tamtam.ai/l/critical-infrastructure-operators-ireland) (118)
- [Companies with a mobile app in Ireland](https://www.tamtam.ai/l/companies-with-mobile-app-ireland) (99)
- [Public sector organisations in Ireland](https://www.tamtam.ai/l/public-sector-organisations-ireland) (88)
- [Retail companies in Ireland](https://www.tamtam.ai/l/retail-companies-ireland) (84)
- [Education providers in Ireland](https://www.tamtam.ai/l/education-companies-ireland) (83)
- [IT Services and IT Consulting companies in Ireland](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-ireland) (83)
- [IT services companies in Ireland](https://www.tamtam.ai/l/it-services-companies-ireland) (77)
- [Construction companies in Ireland](https://www.tamtam.ai/l/construction-companies-ireland) (70)
- [Healthcare providers in Ireland](https://www.tamtam.ai/l/healthcare-providers-ireland) (69)
- [Consulting firms in Ireland](https://www.tamtam.ai/l/consulting-firms-ireland) (65)
- [Family-owned companies in Ireland](https://www.tamtam.ai/l/family-owned-companies-ireland) (64)
- [Distributors and wholesalers in Ireland](https://www.tamtam.ai/l/distributors-and-wholesalers-ireland) (63)
- [Subscription businesses in Ireland](https://www.tamtam.ai/l/subscription-businesses-ireland) (62)
- [Hardware manufacturers in Ireland](https://www.tamtam.ai/l/hardware-companies-ireland) (61)

## The same list elsewhere in Ireland

- [Corporate groups and holding companies in Dublin](https://www.tamtam.ai/l/holding-companies-dublin) (25)

## The same list elsewhere

- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,864)
- [Corporate groups and holding companies in Europe](https://www.tamtam.ai/l/holding-companies-in-europe) (4,396)

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Source: https://www.tamtam.ai/l/holding-companies-ireland