1. DCC

The DCC group provides sales, marketing, distribution and business support services and operates across five divisions: Energy, SerCom (which encompasses IT and entertainment products) Healthcare, Environmental and Food and Beverage.

2. Paddy Power Betfair

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.

3. Eircom

Eir (previously known as eircom) is the principal provider of fixed-line telecommunications services in Ireland with approximately 2.6 million fixed-line telephone access channels in service. The company's mobile division includes Meteor and emobile. In March 2016, Eir...

4. Apple Ireland

Apple designs and creates iPods and iTunes, Mac laptops and desktop computers, the OS X operating system, and the iPhone. The company first established operations in Ireland in 1980. The company is based in Cork and currently employs over 5,000 people as a result of a...

5. Intel Ireland

Intel Ireland's Leixlip campus began operations in 1989. Since then, the multinational microchip manufacturer has invested over €6 billion in developing this base. It employs over 5,000 people at its Irish subsidiary.

6. HP Ireland

Hewlett Packard in Ireland runs nine different businesses with over 4,000 employees in the areas of manufacturing, research and development, customer software support, marketing, and sales and services. The main site for HP in Ireland is located in Leixlip, Co Kildare, ...

7. IBM

IBM is a provider of advanced information technology, products, services and business consulting expertise. IBM in Ireland is made up of a diverse workforce of over 3,000 employees working across a broad range of businesses and locations including: IBM Ireland, which...

8. Adobe

Adobe Software Trading Company Limited, based in Citywest in Dublin, operates as a subsidiary of Adobe Systems Inc. Founded in 1982 and with headquarters in San Jose, California, Adobe Systems Inc makes software including Adobe Flash Player, Adobe Reader and Adobe AI...

9. Google

Google Ireland is the Europe, Middle East and Africa (EMEA) headquarters for Google and provides technical, sales and operations support to customers in over 50 countries.

10. Paypal

PayPal, which is based in Blanchardstown, provides customer support and shared services on behalf of the PayPal group. Founded in 1998, PayPal enables individuals and businesses to send and receive payments online. PayPal also has a European operations centre in ...

11. Accenture

Accenture is a global professional services company, providing a broad range of services in strategy, consulting, digital, technology and operations. The company began operating in Ireland since 1969 and is part of a global network spanning 120 countries and more than 3...

12. Allstate NI

Allstate Northern Ireland provides high quality software development services and business solutions in support of parent company The Allstate Corporation, which is America’s largest publically help personal lines, property and casualty insurer. Allstate NI was establ...

13. Vodafone

Vodafone is communications operator with 2.4 million customers. It first entered the Irish market in May 2001, having acquired Eircell. Vodafone Ireland is part of Vodafone Group, one of the world's largest mobile communications companies by revenue.

14. Facebook

Founded in 2004, Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to stay connected with friends and family, to discover what’s going on in the world, and to share and express what matter...

15. Seagate Technology

Starting out as Shugart Technology in 1978, Seagate Technology is a global leader in data storage solutions. Seagate Technology designs, manufactures and markets hard disk drives and storage devices for enterprise, desktop, mobile computing, consumer electronics, and e...

16. Arvato Digital Services

Arvato Digital Services, formerly Sonopress, provides a comprehensive range of services and solutions to its business partners in the IT/high-tech, games, video, and audio sectors. It is a provider of integrated solutions that include every step of the value chain, ...

17. Linkedin

Founded in 2003, LinkedIn is the business-oriented social networking site, which connects the world’s professionals and strengthens their network. LinkedIn has had an office in Dublin for five years. Linked in has more than 400 million members in over 200 countries and...

18. Taxback Group

Taxback.com is a multi-national corporation providing specialist tax return services to private and corporate clients across 100 countries. Established in Dublin in 1996 and led by a team of entrepreneurial business executives, taxback.com has 33 offices worldwide, in E...

19. Symantec

Internet security technology group Symantec provides content and network security software and appliance solutions to individuals, enterprises and service providers. Symantec's consumer security products include the Norton brand. Headquartered in California, Symantec ha...

20. Microsoft

Microsoft Ireland Operations Ltd is a subsidiary of the software giant Microsoft which sells, distributes and markets software globally from Dublin. Microsoft, the world’s biggest software company, established an Irish manufacturing facility in 1985 and now employs ...