These multinational companies in Dublin are generally large firms, with a strong presence in professional services, manufacturing, and pharmaceuticals. Accenture provides professional services to businesses and governments globally, while Eaton focuses on intelligent power management. Smurfit Kappa is a global provider of sustainable paper-based packaging, and Primark is an international fashion retailer. ICON plc specializes in accelerating the development of drugs and devices.
The data shows a concentration of headquarters in Dublin for these multinational entities. The sectors represented are diverse, ranging from business consulting and pharmaceutical manufacturing to retail and higher education, indicating a varied economic landscape for large international operations in the city.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Accentureaccenture.com
It provides professional services to businesses and governments, focusing on digital transformation, operational optimization, and enhancing citizen services globally. |
687,682 | |||
| 2 | 51,011 | ||||
| 3 |
Smurfit Westrocksmurfitwestrock.com
Global provider of innovative paper-based packaging solutions with extensive operations, mills, and a large workforce across multiple countries. |
50,141 | |||
| 4 |
Smurfit Kappasmurfitwestrock.com
A global provider of sustainable paper-based packaging solutions, offering innovative products and expertise to drive success for customers worldwide |
48,000 | |||
| 5 |
Primarkprimark.com
International fashion retailer, over 470 stores, offering affordable fashion and everyday essentials at unbeatable prices for everyone. |
45,876 | |||
| 6 |
ICON plciconplc.com
A global company founded in Ireland in 1990, specializing in accelerating the development of drugs and devices to save lives and improve quality of life |
35,001 | |||
| 7 |
Weatherfordweatherford.com
A global energy services company with 17,000 team members in 75 countries, providing solutions for the challenges of the energy industry |
29,301 | |||
| 8 |
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 | |||
| 9 |
Allerganabbvie.com
The company discovers and delivers innovative medicines in various therapeutic areas including immunology, oncology, neuroscience, eye care, and more |
9,833 | |||
| 10 |
University College Dublinucd.ie
Research-intensive university offering undergraduate, masters, PhD education, fostering innovation, global engagement, and diverse academic disciplines across multiple campuses. |
8,585 | |||
| 11 |
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 | |||
| 12 |
ICON Strategic Solutionsiconplc.com
Global leader in Functional Service Provision services, offering cost-saving FSP models and clinical expertise to improve business performance Providing industry insights and job opportunities |
7,496 | |||
| 13 |
Trinity College Dublintcd.ie
Leading Irish university offering world-class education and research, recognized globally for academic excellence and high international rankings. |
7,268 | |||
| 14 | 7,256 | ||||
| 15 |
Allegionallegion.com
Global leader in seamless access solutions for homes, businesses, schools, and institutions, specializing in securing people and assets around the door |
7,123 | |||
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. | |||||
| 16 |
Perrigo Company plcperrigo.com
European Consumer Self-Care market top player, U.S. store brand over-the-counter and infant formula provider, offering trusted health and wellness solutions. |
5,088 | |||
| 17 | 4,937 | ||||
| 18 | 4,748 | ||||
| 19 |
PM Grouppmgroup-global.com
Specializes in designing, constructing, and commissioning high-tech facilities for pharma, food, data centers, medical technology, manufacturing, and energy sectors globally. |
4,477 | |||
| 20 |
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 | |||
| 21 |
Version 1version1.com
IT services and solutions provider trusted by global brands, offering independent advice to navigate the evolving IT landscape and drive customer success |
3,944 | |||
| 22 |
Aer Lingusaerlingus.com
National airline of Ireland operating modern fleet, connecting UK, Europe, North America via Dublin and Shannon airports with US Pre-Clearance. |
3,884 | |||
| 23 |
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 | |||
| 24 |
Jazz Pharmaceuticalsjazzpharma.com
Global biopharmaceutical company focused on developing innovative medicines for serious diseases with limited treatment options to improve patient lives. |
3,643 | |||
| 25 |
Mallinckrodt Pharmaceuticalsmnk.com
Specializing in specialty pharmaceuticals, we develop, manufacture, and distribute innovative treatments for underserved patient populations across various medical fields |
3,400 | |||
| 26 |
Concern Worldwideconcern.net
International humanitarian organization working with poorest communities to improve lives and influence policies reducing extreme poverty globally. |
3,327 | |||
| 27 |
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 | |||
| 28 |
KPMG Irelandkpmg.ie
A leading provider of audit, tax, and advisory services for domestic and international clients across all sectors, specializing in driving value and navigating change |
2,978 | |||
| 29 |
Zurich Insurance plczurich.com
Insurance provider with operations in Ireland and nine other European countries, part of a global network with over 55,000 employees worldwide |
2,910 | |||
| 30 |
Mercurymercuryeng.com
Design and manage complex engineering and construction projects for leading corporations, delivering innovative solutions that connect communities and businesses. |
2,864 | |||
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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 11, 2026.
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