Ireland

Top 21 largest Irish Companies in the Healthcare sector by Market Cap

This is the list of the largest public listed companies in the Healthcare sector from Ireland by market capitalization with links to their reference stock and industry.

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Top Healthcare Companies from Ireland as of Jul. 01, 2025

Rank Company Market Cap (USD) Country Sector Industry
1 Medtronic plc $113.25 B Ireland Irish Healthcare Irish Medical Devices
2 Horizon Therapeutics Public Limited Company $26.63 B

(Jan. 1, 2025)

 Ireland Irish Healthcare Irish Drug Manufacturers—General
3 STERIS plc $23.44 B Ireland Irish Healthcare Irish Medical Instruments & Supplies
4 ICON Public Limited Company $11.99 B Ireland Irish Healthcare Irish Diagnostics & Research
5 Jazz Pharmaceuticals plc $6.62 B Ireland Irish Healthcare Irish Biotechnology
6 Alkermes plc $4.76 B Ireland Irish Healthcare Irish Biotechnology
7 UDG Healthcare plc $3.77 B

(Aug. 1, 2021)

 Ireland Irish Healthcare Irish Medical Care Facilities
8 Perrigo Company plc $3.74 B Ireland Irish Healthcare Irish Drug Manufacturers—Specialty & Generic
9 COSMO Pharmaceuticals NV $1.17 B Ireland Irish Healthcare Irish Drug Manufacturers—General
10 Uniphar plc $1.13 B Ireland Irish Healthcare Irish Medical Care Facilities
11 Avadel Pharmaceuticals plc $865.3 M Ireland Irish Healthcare Irish Drug Manufacturers—Specialty & Generic
12 Amarin Corporation plc $346.4 M Ireland Irish Healthcare Irish Biotechnology
13 Prothena Corporation plc $346.4 M Ireland Irish Healthcare Irish Biotechnology
14 Oneview Healthcare PLC $181.3 M

(July 1, 2024)

 Ireland Irish Healthcare Irish Health Information Services
15 kneat.com, Inc. $176.3 M

(Oct. 1, 2022)

 Ireland Irish Healthcare Irish Health Information Services
16 Endo International plc $68.8 M

(Oct. 1, 2022)

 Ireland Irish Healthcare Irish Drug Manufacturers—Specialty & Generic
17 Malin Corp plc $42.4 M Ireland Irish Healthcare Irish Biotechnology
18 Iterum Therapeutics plc $38.6 M Ireland Irish Healthcare Irish Biotechnology
19 Nabriva Therapeutics plc $4.5 M

(Oct. 1, 2023)

 Ireland Irish Healthcare Irish Biotechnology
20 Ovoca Bio plc $12,893 Ireland Irish Healthcare Irish Biotechnology
21 Mallinckrodt plc Ireland Irish Healthcare Irish Drug Manufacturers—Specialty & Generic

Top Healthcare Companies from Ireland as of Jul. 01, 2025

1. Medtronic

Company Profile: Medtronic plc
Market Cap (USD): $113.25 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Medical Devices

2. Horizon Therapeutics Public Limited Company

Company Profile: Horizon Therapeutics Public Limited Company
Market Cap (USD): $26.63 B (Jan. 1, 2025)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Drug Manufacturers—General

3. STERIS plc

Company Profile: STERIS plc
Market Cap (USD): $23.44 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Medical Instruments & Supplies

4. ICON Public Limited Company

Company Profile: ICON Public Limited Company
Market Cap (USD): $11.99 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Diagnostics & Research

5. Jazz Pharmaceuticals plc

Company Profile: Jazz Pharmaceuticals plc
Market Cap (USD): $6.62 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

6. Alkermes plc

Company Profile: Alkermes plc
Market Cap (USD): $4.76 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

7. UDG Healthcare plc

Company Profile: UDG Healthcare plc
Market Cap (USD): $3.77 B (Aug. 1, 2021)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Medical Care Facilities

8. Perrigo Company plc

Company Profile: Perrigo Company plc
Market Cap (USD): $3.74 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Drug Manufacturers—Specialty & Generic

9. COSMO Pharmaceuticals NV

Company Profile: COSMO Pharmaceuticals NV
Market Cap (USD): $1.17 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Drug Manufacturers—General

10. Uniphar plc

Company Profile: Uniphar plc
Market Cap (USD): $1.13 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Medical Care Facilities

11. Avadel Pharmaceuticals plc

Company Profile: Avadel Pharmaceuticals plc
Market Cap (USD): $865.3 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Drug Manufacturers—Specialty & Generic

12. Amarin Corporation plc

Company Profile: Amarin Corporation plc
Market Cap (USD): $346.4 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

13. Prothena Corporation plc

Company Profile: Prothena Corporation plc
Market Cap (USD): $346.4 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

14. Oneview Healthcare PLC

Company Profile: Oneview Healthcare PLC
Market Cap (USD): $181.3 M (July 1, 2024)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Health Information Services

15. kneat.com, Inc.

Company Profile: kneat.com, Inc.
Market Cap (USD): $176.3 M (Oct. 1, 2022)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Health Information Services

16. Endo International plc

Company Profile: Endo International plc
Market Cap (USD): $68.8 M (Oct. 1, 2022)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Drug Manufacturers—Specialty & Generic

17. Malin Corp plc

Company Profile: Malin Corp plc
Market Cap (USD): $42.4 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

18. Iterum Therapeutics plc

Company Profile: Iterum Therapeutics plc
Market Cap (USD): $38.6 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

19. Nabriva Therapeutics plc

Company Profile: Nabriva Therapeutics plc
Market Cap (USD): $4.5 M (Oct. 1, 2023)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

20. Ovoca Bio plc

Company Profile: Ovoca Bio plc
Market Cap (USD): $12,893
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

21. Mallinckrodt plc

Company Profile: Mallinckrodt plc
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Drug Manufacturers—Specialty & Generic

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