1. Flutter

Betting and gaming group Paddy Power is a global plc headquartered in Ireland. In 2015 it merged with UK group Betfair to form a €10 billion gambling business with operations in Ireland, Europe, Australia and the US.

2. Dunnes Stores Ireland

A combination of food, textiles and homewares all under one roof makes Dunnes Stores unique amongst Irish retail companies. In total there are 145 stores in the group, including five in Spain and eight in the UK.

3. Tesco

Tesco's reach in Ireland includes convenience stores, supermarkets and superstores across Ireland selling fresh food, groceries and household products, as well as clothing, books, hardware, electrical goods etc in larger stores. Services offered include Tesco Mobile, Te...

4. Applegreen

Motorway service station operator Petrogas is the company behind the Applegreen service stations. Applegreen is part of a consortium that holds a public-private partnership (PPP) contract with the National Roads Authority (NRA) to build and operate six motorway service ...

5. Grafton

The Grafton Group plc is a builders merchanting, DIY retailing and mortar manufacturing markets in Britain and Ireland. In Ireland it trades under the brands Woodie’s DIY , Heiton Buckley, Chadwicks and MacNaughton Blair. These businesses turnover €2 billion from 600 lo...

6. Musgrave

Founded in Cork in the 1870s by Thomas and Stuart Musgrave, Musgrave is one of Ireland's oldest privately-owned companies. It is still controlled by members of the Musgrave family. The owner of the Supervalu, Centra and Daybreak franchise chains, it acquired Superquinn ...

7. Penneys

Penneys, which is operated by Primark, is a discount clothing retailer with 37 stores in Ireland. It is a subsidiary of Associated British Foods.

8. Lidl

Lidl is a discount supermarket chain founded in Germany. The company has 143 stores in the Republic of Ireland and 38 stores in Northern Ireland. Lidl currently employees over 4,400 people across the island of Ireland.

9. Smyths

Smyths Toys is a provider of children's entertainment products with 69 stores throughout the UK and Ireland: 41 in Britain, 22 in the Republic and six in Northern Ireland. The company sells everything from nursery products to preschool, toys for all ages as well as bike...

10. Portwest

Founded in 1904, Irish company Portwest has become one of Europe’s most trusted names in workwear, personal protective equipment and safety footwear and leisurewear. In 2014, Taoiseach Enda Kenny launched a Portwest sales office and warehouse in Dubai. Portwest is now...

11. Aldi

Aldi is a German-owned discount supermarket chain and it opened its first supermarket in Ireland in 1999. The company does not disclose its sales or profits in Ireland. It has over 10,000 stores worldwide.

12. Henderson Group

Family-owned Henderson Group are the owners of the Spar, Eurospar, Vivo and Vivoxtra franchises in Northern Ireland and have been distributing food and grocery-related products to the convenience retail sector for over 100 years. The Henderson Group consists of four in...

13. Bwg Group

BWG Group is an Irish-based retail and wholesale business operating in the Republic of Ireland and the United Kingdom, with annual revenues of approximately €1.7 billion. BWG Foods operates the Group’s substantial retail, wholesale and wines & spirits business in Irelan...

14. Mentor Graphics

Mentor Graphics (Holdings) Ltd is part of the US group Mentor Graphics Corporation (MGC). MGC specialises in the research, development and manufacture of software products and services, and the distribution of software products throughout the world. Its Irish base is...

15. Rehab

The Rehab Group, which in Ireland incorporates National Learning Network, RehabCare and Rehab Enterprises, is a not-for-profit organisation the mission of which is to "work towards a world where every person has the opportunity to achieve their potential". The peopl...

16. Boylesports

Boylesports is Ireland's largest independent bookmaker with 206 stores. Boylesports, which was established in 1982, offers online betting and odds on all of the top sporting events, with comprehensive coverage of horse racing, football, rugby, golf, tennis, cricket, gr...

17. Sainsburys

Sainsbury’s was founded in 1869 and operates stores across the UK, including 12 supermarkets in Northern Ireland. Former manager of a Sainsbury’s store Nigel Macauley took over the role of Regional Operations Manager in 2011, after which employment remained steady and...

18. Circle K Ireland Energy Group Limited

Circle K Ireland is the largest fuel and convenience retailer in Ireland. Part of the global fuel and convenience store brand Circle K, it is owned and operated by the Canadian company Alimentation Couche-Tard. With 2,300 employees across the island of Ireland, its reta...

19. United Hardware

United Hardware is an Irish hardware and homeware group. As an Irish-owned business, United Hardware supplies and operates the Homevalue retail brand on behalf of its members, who together have approximately 150 stores across Ireland. These cater to a diverse base of tr...

20. Tuli Holdings

Tuli Holdings is the parent company of MBCC foods, which operates a number of cooked foods and coffee outlets in Ireland. MBCC Food’s main shareholders are Scotland-based Raju and Sundeep Tuli of Tuli Holdings which is run by the Tuli family, who also have an interest...