| # | 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 |
Health Service Executivehse.ie
Providing safe, high quality health and personal social services across Ireland with a large workforce in hospitals and communities. |
34,432 |
| 8 |
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 |
| 9 |
Dunnes Storesdunnesstores.com
A company offering contemporary fashion, stylish homewares, and fresh quality food experiences, committed to creating better value for customers |
14,000 |
| 10 |
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 |
| 11 |
Department of Education and Youthgov.ie
Government department overseeing education policies, supporting children's learning, and promoting youth development for Ireland's social and economic growth. |
11,590 |
| 12 |
Allerganabbvie.com
The company discovers and delivers innovative medicines in various therapeutic areas including immunology, oncology, neuroscience, eye care, and more |
9,833 |
| 13 |
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 |
| 14 |
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 |
| 15 |
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 |
| 16 |
Trinity College Dublintcd.ie
Leading Irish university offering world-class education and research, recognized globally for academic excellence and high international rankings. |
7,268 |
| 17 | 7,256 | |
| 18 |
Allegionallegion.com
Global leader in seamless access solutions for homes, businesses, schools, and institutions, specializing in securing people and assets around the door |
7,031 |
| 19 |
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 |
| 20 | 4,937 | |
| 21 | 4,748 | |
| 22 |
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 |
| 23 |
Nursing Home Carenursinghomecare.ie
This company offers guidance on long-term nursing home care, including choosing a nursing home, financial planning, asset protection, tax planning, and the Fair Deal Scheme |
4,284 |
| 24 |
Dublin City Universitydcu.ie
Leading university in Ireland with focus on enterprise and innovation Offers a wide range of degree programs and renowned research |
4,093 |
| 25 |
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 |
| 26 |
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 |
| 27 |
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 |
| 28 |
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 |
| 29 |
Jazz Pharmaceuticalsjazzpharma.com
Global biopharmaceutical company focused on developing innovative medicines for serious diseases with limited treatment options to improve patient lives. |
3,643 |
| 30 |
An Garda Síochánagarda.ie
National police and security service in Ireland focused on keeping people safe with a vision of moral authority as servants of the people |
3,547 |
| 31 |
Mallinckrodt Pharmaceuticalsmnk.com
Specializing in specialty pharmaceuticals, we develop, manufacture, and distribute innovative treatments for underserved patient populations across various medical fields |
3,400 |
| 32 |
Beaumont Hospitalbeaumont.ie
A leading teaching hospital associated with RCSI Hospital Group, serving as a designated cancer and regional treatment center with strong academic links |
3,349 |
| 33 |
Concern Worldwideconcern.net
International humanitarian organization working with poorest communities to improve lives and influence policies reducing extreme poverty globally. |
3,327 |
| 34 | 3,251 | |
| 35 |
An Postanpost.com
Provides postal, communication, retail, and financial services across Ireland with a large national network and over 10,000 employees. |
3,117 |
| 36 |
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 |
| 37 |
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 |
| 38 |
Royal College of Surgeons in Ireland (RCSI)rcsi.com
A global university dedicated to education and research in healthcare, ranking highly for promoting good health and gender equality |
2,934 |
| 39 |
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 |
| 40 |
Mercurymercuryeng.com
Design and manage complex engineering and construction projects for leading corporations, delivering innovative solutions that connect communities and businesses. |
2,864 |
| 41 |
St James's Hospital Dublinlinkin.bio
An academic teaching hospital delivering health treatment, care, and diagnosis while prioritizing education, research, and collaboration with a focus on quality and accountability |
2,788 |
| 42 | 2,741 | |
| 43 | 2,720 | |
| 44 |
Lidl Irelandlidl.ie
Retail grocery chain offering high-quality products at low prices, operating numerous stores across Ireland and Northern Ireland with a large workforce. |
2,706 |
| 45 |
Paddy Powercareers.flutteruki.com
International sports betting and gaming operator with leading brands in the UK, Ireland, Australia, and the USA, offering online and mobile services to millions of customers worldwide |
2,668 |
| 46 |
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 |
| 47 |
Applegreenapplegreenstores.com
Roadside hospitality convenience retailer with inviting spaces, quality amenities, EV charging, trusted brands, own food and coffee brands, focusing on guest experience. |
2,576 |
| 48 |
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 |
| 49 |
Department of Justice, Home Affairs and Migrationgov.ie
Ensures national safety and fairness through crime prevention, property services, migration management, courts, and international justice cooperation. |
2,530 |
| 50 |
Grant Thornton Irelandgrantthornton.ie
Providing innovative financial and business solutions with local expertise and global reach, fostering client relationships and ethical practices. |
2,514 |
| 51 |
PwC Irelandpwc.ie
Global network providing assurance, advisory, and tax services with a commitment to quality and building trust in society. |
2,502 |
| 52 |
Alkermesalkermes.com
A neuroscience-focused company developing innovative medicines for psychiatric and neurological disorders, with a strong focus on patient well-being and community support |
2,397 |
| 53 |
Department of Social Protectiongov.ie
The company provides income supports, employment services, and other services for a diverse range of customers, including families, individuals with disabilities, and employers |
2,335 |
| 54 |
S&W Irelandswgroup.com
Providing expert tax, accountancy, assurance, and advisory services to support Irish and international businesses through growth, risks, and exits. |
2,293 |
| 55 |
Uisce Éireann Irish Waterwater.ie
National water utility ensuring secure, safe, and sustainable water services in Ireland by delivering quality drinking water and treating wastewater responsibly |
2,229 |
| 56 |
Mater Misericordiae University Hospitalmater.ie
Charitable hospital delivering specialized tertiary healthcare including heart surgery, transplants, spinal injuries, and national isolation services in North Dublin and Ireland. |
2,218 |
| 57 |
Iarnród Éireann Irish Railirishrail.ie
The national railway system operator in Ireland, providing intercity, commuter, and freight services within the Republic of Ireland and to Belfast |
2,157 |
| 58 |
PokerStarscareers.flutterinternational.com
Leading global poker platform committed to quality entertainment Empowering team members to bring pace, responsibility, and team spirit to create unique experiences worldwide |
2,046 |
| 59 |
Covalencovalensolutions.com
A trusted partner providing agile outsourcing solutions to Fortune 500 companies, offering multilingual services in customer experience, operations, and trust & safety |
2,030 |
| 60 |
St. Vincent's University Hospitalstvincents.ie
A leading academic teaching hospital providing acute, chronic, and emergency care across 50 medical specialties with international accreditation and pioneering patient care approaches |
2,000 |
| 61 |
Office of the Attorney General
A legal entity responsible for overseeing and upholding the law, representing the government in legal matters, and advocating for justice |
1,984 |
| 62 |
Central Bank of Irelandcentralbank.ie
Safeguarding monetary and financial stability, ensuring financial system benefits consumers and economy, maintaining independence and public trust. |
1,983 |
| 63 |
Dublin City Councildublincity.ie
Governance and strategic planning for Dublin City, providing housing, planning, development, environmental, roads, traffic, leisure, and community services. |
1,980 |
| 64 |
Irish Lifeirishlife.ie
Leading Irish life, investment, and pension company offering innovative products with strong customer service and global expertise backing. |
1,966 |
| 65 |
Origin Enterprises Plcoriginenterprises.com
Provides technically-led agricultural solutions promoting sustainable land use, empowering customers across multiple countries to maximize land potential. |
1,956 |
| 66 |
Tallaght University Hospitaltuh.ie
One of Ireland's largest acute teaching hospitals providing adult, psychiatric, and age-related healthcare, specializing in urology, dialysis, robotic surgery, and trauma services |
1,943 |
| 67 |
Linesightlinesight.com
Provides professional consultancy, management support, and strategic advice to the global construction industry from concept to completion across diverse sectors worldwide. |
1,931 |
| 68 |
Tesco Irelandtescoireland.ie
Large Irish retailer. Serves customers and communities. Supports local suppliers. Provides diverse career opportunities across retail, head office, and distribution centers. |
1,905 |
| 69 |
BrowserStackbrowserstack.com
Provides instant access to thousands of real devices and browsers for functional, visual, and performance testing through AI-powered cloud infrastructure and tools. |
1,797 |
| 70 | 1,768 | |
| 71 |
MSD Irelandmsd-ireland.com
A leading biopharmaceutical company dedicated to inventing life-saving medicines and vaccines for challenging diseases, with a focus on research and improving health worldwide |
1,697 |
| 72 |
Creditsafecreditsafe.com
A global provider of business credit reports and information, empowering companies with data to make informed decisions and drive growth |
1,670 |
| 73 |
Playrixplayrix.com
A top mobile game company with 120 million monthly players, attributing its success to a talented global team prioritizing people over ideas |
1,599 |
| 74 |
Three Irelandthree.ie
Leading mobile telecommunications provider in Ireland, offering connected life through products, service, and extensive 4G and 5G network coverage. |
1,513 |
| 75 | 1,477 | |
| 76 |
Enterprise Irelandenterprise-ireland.com
Supporting Irish enterprises in international markets through development, growth, innovation, and export sales to drive employment and economic growth |
1,475 |
| 77 |
Mater Private Networkmaterprivate.ie
Advanced healthcare provider offering specialized services including Heart and Vascular, Spine, Cancer, Surgery, and Robotic-assisted Surgery, with a focus on patient-centered care and innovation |
1,471 |
| 78 |
Children’s Health Ireland (CHI)childrenshealthireland.ie
A leading children's hospital in Ireland with over 280 beds and 39 specialties, offering educational opportunities, support for career development, and various employee benefits |
1,430 |
| 79 |
Independent Contractorcodertal.com
Codertal connects big IT companies with top-tier IT contractors, offering on-demand services, software development, recruitment assistance, and cost-effective staffing solutions |
1,410 |
| 80 |
Kepak Groupkepak.com
Irish-based meat processor with multiple facilities, producing fresh and value-added meat products for international foodservice and retail markets. |
1,409 |
| 81 | 1,396 | |
| 82 |
Department of Foreign Affairs and Trade, Irelandireland.ie
This company represents Ireland's interests internationally, promotes investment and tourism, provides consular services to citizens abroad, and supports Irish communities worldwide |
1,341 |
| 83 |
Designer Groupdesignergrp.com
International provider of innovative electrical and mechanical services, sustainable energy solutions, and industrial solutions, with a focus on safety, quality, and sustainability |
1,335 |
| 84 |
Leonardo Hotels UK & Irelandleonardohotels.co.uk
A rapidly expanding hotel chain with over 150 hotels in 13 countries, offering comfortable accommodation for business and leisure guests with excellent amenities |
1,335 |
| 85 |
Actavis (now Allergan)abbvie.com
This company offers various products or services related to allergies and invites followers to join their new LinkedIn page |
1,311 |
| 86 |
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 |
| 87 |
Foodhubfoodhub.co.uk
Access exclusive online ordering privileges for restaurants and takeaways through our app for a convenient dining experience |
1,265 |
| 88 |
Elavon Europeelavon.co.uk
A leading payments provider offering tailored solutions across Europe and the USA, with a focus on reliability, global connectivity, and customer service excellence |
1,241 |
| 89 |
Actavoactavo.com
An international strategic operations partner with diverse services, delivering excellence through rigorous quality standards, safety performance, and customer experience |
1,175 |
| 90 |
Afinitiafiniti.com
Provides AI technology enhancing customer experience across healthcare, telecom, hospitality, insurance, and banking industries worldwide for better business outcomes. |
1,145 |
| 91 |
Matheson LLPmatheson.com
A global legal services provider with expertise in various practice areas, serving internationally focused companies and financial institutions operating in Ireland |
1,139 |
| 92 |
St Vincent's Private Hospitalsvph.ie
Ireland's largest private hospital offering a wide range of specialist medical and surgical services, including cancer care, cardiology, and various other specialties |
1,137 |
| 93 |
Dublin Bus (Bus Átha Cliath)dublinbus.ie
Leading public transport provider in Ireland with a fleet of over 1000 buses operating on 125 routes, employing 3,600 people from 71 countries |
1,126 |
| 94 |
ESB Networksesbnetworks.ie
A subsidiary of ESB Group in Republic of Ireland operating and maintaining electricity distribution system, facilitating competitive market, and investing in network development |
1,113 |
| 95 | 1,100 | |
| 96 | 1,077 | |
| 97 |
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 |
| 98 |
A&L Goodbody LLPalgoodbody.com
A leading Irish corporate law firm with over 100 years of experience, serving domestic and international businesses with offices in multiple locations |
1,054 |
| 99 | 1,038 | |
| 100 |
Dalata Hotel Groupdalatahotelgroup.com
Bringing hospitality to hotels worldwide, Dalata focuses on caring for guests through unique experiences at their 53 locations in Ireland, UK, Germany, and the Netherlands |
1,020 |
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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 Oct 9, 2026.
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- SaaS companies in Dublin 108
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- Construction companies in Dublin 25