1. Boston Scientific

Founded in 1979, Boston Scientific is now one of the world’s largest medical device companies. Focusing on less invasive medicine, it operates within four primary business divisions: Cardiology, Rhythm and Vascular; Endoscopy; Urology & Women's Health, and Neuropath...

2. 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 about 6,000 people . CEO of Apple ...

3. Medtronic plc

The medical device company Medtronic-Covidien became the largest Ireland-based company when it began trading on the New York Stock Exchange in 2015. Following Medtronic Inc’s $49.9 billion acquisition of Dublin-domiciled surgical supplies group Covidien, the Minneapol...

4. 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...

5. 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 ...

6. Abbott Laboratories

Abbott Vascular is a healthcare company focused on advancing the treatment of vascular disease. The company's line of vascular devices–which includes vessel closure, endovascular and coronary technologies–are used to treat vessel diseases of the heart, carotid arteries ...

7. 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.

8. Eaton Corp

Eaton is a power management company that provides energy-efficient solutions that help its customers effectively manage electrical, hydraulic and mechanical power more efficiently, safely and sustainably. Eaton has approximately 97,000 employees worldwide and sells prod...

9. Alexion Pharmaceuticals

Headquartered in Cheshire, Connecticut (USA), Alexion is global biopharmaceutical company focused on the development and delivery of life-transforming therapies for patients with severe and life-threatening rare disorders.

10. CRH

CRH plc is an international building materials group. The group was formed through a merger in 1970 of two leading Irish public companies, Cement Limited (established in 1936) and Roadstone Limited (1949). It is headquartered in Dublin.

11. SAP Solutions

The business software supplier has offices in over 120 countries, over 55,000 employees, and revenues in excess of €12billion. It employs over 1,200 people across three sites in Dublin and Galway. The Dublin organisation focuses on the provision of Global Support, R...

12. Scottish Power Renewables

Scottish Power Renewables is part of Iberdrola, the world’s largest wind energy developer, with an operating portfolio of over 14,000 megawatts. Scottish Power Renewables is responsible for progressing a number of onshore wind and marine energy projects in the UK and I...

13. Trane Technologies

Formerly Ingersoll-Rand, Trane Technologies was formed in early 2020 when part of the business separated and combined with Gardner Denver (which now trades as Ingersoll Rand Inc). Trane is listed on the NYSE. The industrial techology firm makes climate control system...

14. GE Capital Aviation Services

GE Capital Aviation Services (GECAS) is a global player in commercial aircraft leasing and financing, with over 1,670 owned and managed aircraft and over 230 customers in over 75 countries. It is a full life-cycle aviation player, providing leasing and financing options...

15. Experian

Experian plc is a global information services group with operations in 40 countries, with corporate headquarters in Dublin, Republic of Ireland and operational headquarters in Nottingham, United Kingdom.

16. Johnson Controls

Headquartered in Cork, Johnson Controls is a global diversified technology and multi industrial leader serving a wide range of customers in more than 150 countries.

17. NortonLifeLock

Internet security technology group NortonLifeLock (formerly Symantec) provides content and network security software and appliance solutions to consumers. Headquartered in California, Symantec has worldwide operations in 50 countries. Its Irish presence is located in Bl...

18. Smurfit Kappa

Smurfit Kappa is one of the leading producers of paper-based packaging in the world. Its products include containerboard, solid board, corrugated and solid board packaging, graphic board and sack paper. The group's headquarters are in Clonskeagh in Dublin 4 and i...

19. Kerry Group

Kerry Group today provides food, food ingredients and flavours to the Irish and UK markets. Since the commissioning of its first dairy and ingredients plant in Listowel, Co Kerry in 1972, the company has grown to achieve current annualised sales of approximately €5.8 bi...

20. Central Bank

The Central Bank Reform Act 2010 created a single unitary body, the Central Bank of Ireland, responsible for both central banking and financial regulation. The Act commenced on October 1st 2010. This structure replaced the previous related entities, the Financial Serv...