# List of public sector organisations in Dublin

Tamtam tracks 41 public sector organisations headquartered in Dublin. This list ranks the 30 largest by number of employees on LinkedIn, led by University College Dublin, Trinity College Dublin and ESB. Their median headcount is 987. Half of them were founded in 1987 or later.

These Dublin-based public sector organizations primarily span education, healthcare, and utilities. The list includes large established entities like University College Dublin, a research-intensive university founded in 1854, and Trinity College Dublin, recognized globally for academic excellence since 1592. Also featured are ESB, providing secure and sustainable electricity, and Beaumont Hospital, a leading teaching hospital. The Central Bank of Ireland safeguards monetary stability, while Enterprise Ireland supports Irish businesses in international markets.

A notable pattern among these organizations is their long-standing presence; many were founded in the 19th or early 20th centuries. The concentration of headquarters in Dublin highlights the city's role as a central hub for public services and administration in Ireland.

🇮🇪 Dublin · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [University College Dublin](https://www.tamtam.ai/c/university-college-dublin) (ucd.ie)<br>Research-intensive university offering undergraduate, masters, PhD education, fostering innovation, global engagement, and diverse academic disciplines across multiple campuses. | Higher Education | 🇮🇪 Dublin | 8,585 | 1854 |
| 2 | [Trinity College Dublin](https://www.tamtam.ai/c/trinity-college-dublin) (tcd.ie)<br>Leading Irish university offering world-class education and research, recognized globally for academic excellence and high international rankings. | Higher Education | 🇮🇪 Dublin | 7,268 | 1592 |
| 3 | [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 |
| 4 | [Beaumont Hospital](https://www.tamtam.ai/c/beaumont-hospital) (beaumont.ie)<br>A leading teaching hospital associated with RCSI Hospital Group, serving as a designated cancer and regional treatment center with strong academic links | Hospitals and Health Care | 🇮🇪 Dublin | 3,349 |  |
| 5 | [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 |  |
| 6 | [St James's Hospital Dublin](https://www.tamtam.ai/c/st-james-s-hospital-dublin) (linkin.bio)<br>An academic teaching hospital delivering health treatment, care, and diagnosis while prioritizing education, research, and collaboration with a focus on quality and accountability | Hospitals and Health Care | 🇮🇪 Dublin | 2,788 |  |
| 7 | [RTE](https://www.tamtam.ai/c/rte) (rte.ie)<br>Ireland's national public service media offering radio, television, online, and mobile services, with impartial, creative, high-quality programming for diverse audiences | Media Production | 🇮🇪 Dublin | 2,741 | 1926 |
| 8 | [Uisce Éireann Irish Water](https://www.tamtam.ai/c/uisce-eireann-irish-water) (water.ie)<br>National water utility ensuring secure, safe, and sustainable water services in Ireland by delivering quality drinking water and treating wastewater responsibly | Utilities | 🇮🇪 Dublin | 2,229 | 2013 |
| 9 | [Iarnród Éireann Irish Rail](https://www.tamtam.ai/c/iarnrod-eireann-irish-rail) (irishrail.ie)<br>The national railway system operator in Ireland, providing intercity, commuter, and freight services within the Republic of Ireland and to Belfast | Rail Transportation | 🇮🇪 Dublin | 2,157 | 1987 |
| 10 | [Central Bank of Ireland](https://www.tamtam.ai/c/central-bank-of-ireland) (centralbank.ie)<br>Safeguarding monetary and financial stability, ensuring financial system benefits consumers and economy, maintaining independence and public trust. | Banking | 🇮🇪 Dublin | 1,983 | 1943 |
| 11 | [Enterprise Ireland](https://www.tamtam.ai/c/enterprise-ireland) (enterprise-ireland.com)<br>Supporting Irish enterprises in international markets through development, growth, innovation, and export sales to drive employment and economic growth | International Trade and Development | 🇮🇪 Dublin | 1,475 |  |
| 12 | [Children’s Health Ireland (CHI)](https://www.tamtam.ai/c/children-s-health-ireland-chi) (childrenshealthireland.ie)<br>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 | Hospitals and Health Care | 🇮🇪 Dublin | 1,430 | 1956 |
| 13 | [Dublin Bus (Bus Átha Cliath)](https://www.tamtam.ai/c/dublin-bus-bus-atha-cliath) (dublinbus.ie)<br>Leading public transport provider in Ireland with a fleet of over 1000 buses operating on 125 routes, employing 3,600 people from 71 countries | Ground Passenger Transportation | 🇮🇪 Dublin | 1,126 | 1987 |
| 14 | [ESB Networks](https://www.tamtam.ai/c/esb-networks) (esbnetworks.ie)<br>A subsidiary of ESB Group in Republic of Ireland operating and maintaining electricity distribution system, facilitating competitive market, and investing in network development | Utilities | 🇮🇪 Dublin | 1,113 | 1927 |
| 15 | [SOLAS (An tSeirbhís Oideachais Leanúnaigh agus Scileanna)](https://www.tamtam.ai/c/solas-an-tseirbhis-oideachais-leanunaigh-agus-scileanna) (solas.ie)<br>Leading authority in Ireland for funding, planning, and coordinating training programs, ensuring high-quality education for jobseekers and learners through partnerships with stakeholders | Education Administration Programs | 🇮🇪 Dublin | 987 |  |
| 16 | [Bus Éireann](https://www.tamtam.ai/c/bus-eireann) (buseireann.ie)<br>A major provider of bus transportation services in Ireland, offering a wide range of inter-urban, city, commuter, school, and local bus services | Ground Passenger Transportation | 🇮🇪 Dublin | 910 | 1987 |
| 17 | [Fáilte Ireland](https://www.tamtam.ai/c/failte-ireland) (failteireland.ie)<br>The company supports and promotes Ireland as a competitive tourism destination, offering business supports, marketing services, and managing tourist information centers nationwide | Government Administration | 🇮🇪 Dublin | 625 | 2003 |
| 18 | [National Treasury Management Agency](https://www.tamtam.ai/c/national-treasury-management-agency) (ntma.ie)<br>The company provides asset and liability management services to the Government, including borrowing, debt management, and support services for various entities | Financial Services | 🇮🇪 Dublin | 623 | 1990 |
| 19 | [Pobal](https://www.tamtam.ai/c/pobal) (pobal.ie)<br>A nonprofit organization in Ireland supports communities and local agencies in achieving social inclusion and development through managing various government programs | Non-profit Organizations | 🇮🇪 Dublin | 524 | 1992 |
| 20 | [Connolly Hospital Blanchardstown](https://www.tamtam.ai/c/connolly-hospital-blanchardstown) (hse.ie)<br>This hospital in Blanchardstown provides healthcare services, medical treatments, and facilities to local residents and patients in need | Hospitals and Health Care | 🇮🇪 Dublin | 497 | 1955 |
| 21 | [National Transport Authority](https://www.tamtam.ai/c/national-transport-authority) (nationaltransport.ie)<br>Supervision and regulation of public passenger transport services, multi-modal ticketing, strategic planning, and sustainable transport project funding across Ireland. | Government Administration | 🇮🇪 Dublin | 490 | 2009 |
| 22 | [Dublin Airport](https://www.tamtam.ai/c/dublin-airport) (linktr.ee)<br>A major international airport located in Dublin, Ireland, serving as the primary entry point for millions of passengers annually Part of the daa Group | Airlines and Aviation | 🇮🇪 Dublin | 484 |  |
| 23 | [Dún Laoghaire Institute of Art, Design and Technology](https://www.tamtam.ai/c/dun-laoghaire-institute-of-art-design-and-technology) (iadt.ie)<br>Leader in higher education specializing in developing future innovators in digital world through various programs Discover opportunities for your future today | Higher Education | 🇮🇪 Dublin | 482 | 1997 |
| 24 | [ESB International](https://www.tamtam.ai/c/esb-international) (esbinternational.ie)<br>A global engineering consultancy firm serving the utility sector, specializing in delivering large-scale projects to maximize investor returns and minimize project risk | Utilities | 🇮🇪 Dublin | 413 | 1975 |
| 25 | [National College of Art & Design](https://www.tamtam.ai/c/national-college-of-art-and-design) (ncad.ie)<br>Leading provider of art and design education in Ireland for over 250 years, offering undergraduate, graduate, and part-time programs across various disciplines | Design Services | 🇮🇪 Dublin | 412 | 1746 |
| 26 | [​Temple Street Children’s University Hospital](https://www.tamtam.ai/c/temple-street-children-s-university-hospital) (cuh.ie)<br>A national pediatric hospital specializing in various medical fields, caring for 145,000 children annually with a team of over 1,000 healthcare professionals | Hospitals and Health Care | 🇮🇪 Dublin | 411 | 1872 |
| 27 | [Tourism Ireland](https://www.tamtam.ai/c/tourism-ireland) (tourismireland.com)<br>Marketing the island of Ireland as a top holiday and Business Events destination globally, with offices in key international markets and on the island | Travel Arrangements | 🇮🇪 Dublin | 410 | 2002 |
| 28 | [Health Products Regulatory Authority (HPRA)](https://www.tamtam.ai/c/health-products-regulatory-authority-hpra) (hpra.ie)<br>Regulating medicines and devices for people and animals, the company offers information on current vacancies for those interested in working with them | Government Administration | 🇮🇪 Dublin | 400 | 1996 |
| 29 | [Irish Aviation Authority](https://www.tamtam.ai/c/irish-aviation-authority) (iaa.ie)<br>Leading civil aviation regulator in Ireland ensuring safety, security, and consumer interests in compliance with global, European, and national regulations | Airlines and Aviation | 🇮🇪 Dublin | 393 | 1993 |
| 30 | [Dublin Fire Brigade](https://www.tamtam.ai/c/dublin-fire-brigade) (dublincity.ie)<br>Providing 24/7 Fire, Ambulance & Rescue services in Dublin with Firefighters, Paramedics, and Advanced Paramedics available to respond to emergencies | Public Safety | 🇮🇪 Dublin | 358 | 1862 |

## 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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- [Government Administration companies in Dublin](https://www.tamtam.ai/l/government-administration-companies-dublin) (30)
- [Construction companies in Dublin](https://www.tamtam.ai/l/construction-companies-dublin) (27)
- [Hospitals and Health Care companies in Dublin](https://www.tamtam.ai/l/hospitals-and-health-care-companies-dublin) (27)
- [Publicly traded companies in Dublin](https://www.tamtam.ai/l/publicly-traded-companies-dublin) (27)
- [Insurance companies in Dublin](https://www.tamtam.ai/l/insurance-companies-dublin) (25)

## The same list elsewhere in Ireland

- [Public sector organisations in Ireland](https://www.tamtam.ai/l/public-sector-organisations-ireland) (88)

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Source: https://www.tamtam.ai/l/public-sector-organisations-dublin