Ireland

Top 95 largest Irish Companies by Market Cap

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

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Top Companies from Ireland as of Jan. 01, 2024

Rank Company Market Cap (USD) Country Sector Industry
1 Accenture plc $211.87 B Ireland Technology Information Technology Services
2 Medtronic plc $111.60 B Ireland Healthcare Medical Devices
3 Eaton Corporation plc $93.63 B Ireland Industrials Specialty Industrial Machinery
4 Aon Plc $58.24 B Ireland Financials Insurance Brokers
5 Trane Technologies plc $54.54 B Ireland Industrials Specialty Industrial Machinery
6 CRH plc $46.37 B Ireland Basic Materials Building Materials
7 Johnson Controls International plc $38.59 B Ireland Industrials Engineering & Construction
8 Experian plc $37.45 B Ireland Industrials Consulting Services
9 Flutter Entertainment plc $31.25 B Ireland Consumer Discretionary Gambling
10 Aptiv PLC $23.90 B Ireland Consumer Discretionary Auto Parts
11 Horizon Therapeutics Public Limited Company $23.58 B

(July 1, 2023)

 Ireland Healthcare Drug Manufacturers—General
12 ICON Public Limited Company $22.12 B Ireland Healthcare Diagnostics & Research
13 STERIS plc $21.34 B Ireland Healthcare Medical Instruments & Supplies
14 Ryanair Holdings plc $18.18 B

(Dec. 1, 2021)

 Ireland Industrials Airlines
15 Seagate Technology plc $16.90 B Ireland Technology Computer Hardware
16 James Hardie Industries plc $16.29 B Ireland Basic Materials Building Materials
17 Kerry Group plc $15.35 B Ireland Consumer Staples Packaged Foods
18 Kingspan Group plc $15.22 B Ireland Industrials Building Products & Equipment
19 AerCap Holdings N.V. $14.66 B Ireland Industrials Airports & Air Services
20 AIB Group plc $11.78 B Ireland Financials Banks—Regional
21 Allegion plc $10.73 B Ireland Industrials Security & Protection Services
22 Bank of Ireland Group plc $10.16 B Ireland Financials Banks—Regional
23 Smurfit Kappa Group plc $10.05 B Ireland Consumer Discretionary Packaging & Containers
24 Jazz Pharmaceuticals plc $7.89 B Ireland Healthcare Biotechnology
25 DCC plc $7.27 B Ireland Energy Oil & Gas Refining & Marketing
26 Alkermes plc $4.77 B Ireland Healthcare Biotechnology
27 Perrigo Company plc $4.55 B Ireland Healthcare Drug Manufacturers—Specialty & Generic
28 Glanbia plc $4.37 B Ireland Consumer Staples Packaged Foods
29 UDG Healthcare plc $3.77 B

(Aug. 1, 2021)

 Ireland Healthcare Medical Care Facilities
30 Adient plc $3.24 B Ireland Consumer Discretionary Auto Parts

Top Companies from Ireland as of Jan. 01, 2024

1. Accenture

Company Profile: Accenture plc
Market Cap (USD): $211.87 B
Country: Ireland
Sector: Technology
Industry: Information Technology Services

2. Medtronic

Company Profile: Medtronic plc
Market Cap (USD): $111.60 B
Country: Ireland
Sector: Healthcare
Industry: Medical Devices

3. Eaton Corporation plc

Company Profile: Eaton Corporation plc
Market Cap (USD): $93.63 B
Country: Ireland
Sector: Industrials
Industry: Specialty Industrial Machinery

4. Aon Plc

Company Profile: Aon Plc
Market Cap (USD): $58.24 B
Country: Ireland
Sector: Financials
Industry: Insurance Brokers

5. Trane Technologies plc

Company Profile: Trane Technologies plc
Market Cap (USD): $54.54 B
Country: Ireland
Sector: Industrials
Industry: Specialty Industrial Machinery

6. CRH plc

Company Profile: CRH plc
Market Cap (USD): $46.37 B
Country: Ireland
Sector: Basic Materials
Industry: Building Materials

7. Johnson Controls International plc

Company Profile: Johnson Controls International plc
Market Cap (USD): $38.59 B
Country: Ireland
Sector: Industrials
Industry: Engineering & Construction

8. Experian plc

Company Profile: Experian plc
Market Cap (USD): $37.45 B
Country: Ireland
Sector: Industrials
Industry: Consulting Services

9. Flutter Entertainment plc

Company Profile: Flutter Entertainment plc
Market Cap (USD): $31.25 B
Country: Ireland
Sector: Consumer Discretionary
Industry: Gambling

10. Aptiv PLC

Company Profile: Aptiv PLC
Market Cap (USD): $23.90 B
Country: Ireland
Sector: Consumer Discretionary
Industry: Auto Parts

11. Horizon Therapeutics Public Limited Company

Company Profile: Horizon Therapeutics Public Limited Company
Market Cap (USD): $23.58 B (July 1, 2023)
Country: Ireland
Sector: Healthcare
Industry: Drug Manufacturers—General

12. ICON Public Limited Company

Company Profile: ICON Public Limited Company
Market Cap (USD): $22.12 B
Country: Ireland
Sector: Healthcare
Industry: Diagnostics & Research

13. STERIS plc

Company Profile: STERIS plc
Market Cap (USD): $21.34 B
Country: Ireland
Sector: Healthcare
Industry: Medical Instruments & Supplies

14. Ryanair Holdings plc

Company Profile: Ryanair Holdings plc
Market Cap (USD): $18.18 B (Dec. 1, 2021)
Country: Ireland
Sector: Industrials
Industry: Airlines

15. Seagate Technology plc

Company Profile: Seagate Technology plc
Market Cap (USD): $16.90 B
Country: Ireland
Sector: Technology
Industry: Computer Hardware

16. James Hardie Industries plc

Company Profile: James Hardie Industries plc
Market Cap (USD): $16.29 B
Country: Ireland
Sector: Basic Materials
Industry: Building Materials

17. Kerry Group plc

Company Profile: Kerry Group plc
Market Cap (USD): $15.35 B
Country: Ireland
Sector: Consumer Staples
Industry: Packaged Foods

18. Kingspan Group plc

Company Profile: Kingspan Group plc
Market Cap (USD): $15.22 B
Country: Ireland
Sector: Industrials
Industry: Building Products & Equipment

19. AerCap Holdings N.V.

Company Profile: AerCap Holdings N.V.
Market Cap (USD): $14.66 B
Country: Ireland
Sector: Industrials
Industry: Airports & Air Services

20. AIB Group plc

Company Profile: AIB Group plc
Market Cap (USD): $11.78 B
Country: Ireland
Sector: Financials
Industry: Banks—Regional

21. Allegion plc

Company Profile: Allegion plc
Market Cap (USD): $10.73 B
Country: Ireland
Sector: Industrials
Industry: Security & Protection Services

22. Bank of Ireland Group plc

Company Profile: Bank of Ireland Group plc
Market Cap (USD): $10.16 B
Country: Ireland
Sector: Financials
Industry: Banks—Regional

23. Smurfit Kappa Group plc

Company Profile: Smurfit Kappa Group plc
Market Cap (USD): $10.05 B
Country: Ireland
Sector: Consumer Discretionary
Industry: Packaging & Containers

24. Jazz Pharmaceuticals plc

Company Profile: Jazz Pharmaceuticals plc
Market Cap (USD): $7.89 B
Country: Ireland
Sector: Healthcare
Industry: Biotechnology

25. DCC plc

Company Profile: DCC plc
Market Cap (USD): $7.27 B
Country: Ireland
Sector: Energy
Industry: Oil & Gas Refining & Marketing

26. Alkermes plc

Company Profile: Alkermes plc
Market Cap (USD): $4.77 B
Country: Ireland
Sector: Healthcare
Industry: Biotechnology

27. Perrigo Company plc

Company Profile: Perrigo Company plc
Market Cap (USD): $4.55 B
Country: Ireland
Sector: Healthcare
Industry: Drug Manufacturers—Specialty & Generic

28. Glanbia plc

Company Profile: Glanbia plc
Market Cap (USD): $4.37 B
Country: Ireland
Sector: Consumer Staples
Industry: Packaged Foods

29. UDG Healthcare plc

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

30. Adient plc

Company Profile: Adient plc
Market Cap (USD): $3.24 B
Country: Ireland
Sector: Consumer Discretionary
Industry: Auto Parts

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