Top 94 largest Irish Companies by Market Cap in 2023

This is the list of the 94 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, 2023

Ranking Company Market Cap (USD) Stock Country Sector Industry
1 Accenture plc $170.33 B ACN Ireland Technology Information Technology Services
2 Medtronic plc $103.38 B MDT Ireland Healthcare Medical Devices
3 Eaton Corporation plc $62.74 B ETN Ireland Industrials Specialty Industrial Machinery
4 Johnson Controls International plc $43.95 B JCI Ireland Industrials Engineering & Construction
5 Trane Technologies plc $38.71 B TT Ireland Industrials Specialty Industrial Machinery
6 Experian plc $31.71 B EXPN Ireland Industrials Consulting Services
7 CRH plc $31.24 B CRH Ireland Basic Materials Building Materials
8 Horizon Therapeutics Public Limited Company $25.70 B HZNP Ireland Healthcare Drug Manufacturers—General
9 Aptiv PLC $25.18 B APTV Ireland Consumer Discretionary Auto Parts
10 Flutter Entertainment plc $25.18 B FLTR Ireland Consumer Discretionary Gambling
11 STERIS plc $18.70 B STE Ireland Healthcare Medical Instruments & Supplies
12 Ryanair Holdings plc $17.14 B

(Dec. 1, 2021)

RY4C Ireland Industrials Airlines
13 Kerry Group plc $16.34 B KRZ Ireland Consumer Staples Packaged Foods
14 ICON Public Limited Company $16.26 B ICLR Ireland Healthcare Diagnostics & Research
15 AerCap Holdings N.V. $14.78 B AER Ireland Industrials Airports & Air Services
16 Seagate Technology plc $11.04 B STX Ireland Technology Computer Hardware
17 AIB Group plc $10.83 B A5G Ireland Financials Banks
18 Bank of Ireland Group plc $10.65 B BIRG Ireland Financials Banks
19 Kingspan Group plc $10.41 B KRX Ireland Industrials Building Products & Equipment
20 Smurfit Kappa Group plc $10.24 B SK3 Ireland Consumer Discretionary Packaging & Containers
21 Jazz Pharmaceuticals plc $10.04 B JAZZ Ireland Healthcare Biotechnology
22 Allegion plc $9.68 B ALLE Ireland Industrials Security & Protection Services
23 James Hardie Industries plc $8.27 B JHX Ireland Basic Materials Building Materials
24 DCC plc $5.15 B DCC Ireland Energy Oil & Gas Refining & Marketing
25 Perrigo Company plc $4.78 B PRGO Ireland Healthcare Drug Manufacturers—Specialty & Generic
26 Alkermes plc $4.16 B ALKS Ireland Healthcare Biotechnology
27 Adient plc $3.55 B ADNT Ireland Consumer Discretionary Auto Parts
28 Glanbia plc $3.43 B GL9 Ireland Consumer Staples Packaged Foods
29 UDG Healthcare plc $3.27 B

(Aug. 1, 2021)

UDG Ireland Healthcare Medical Care Facilities
30 Prothena Corporation plc $2.75 B PRTA Ireland Healthcare Biotechnology
31 Keywords Studios plc $2.63 B KWS Ireland Communication Services Electronic Gaming & Multimedia
32 Grafton Group plc $2.30 B GFTU Ireland Industrials Building Products & Equipment
33 Greencoat Renewables plc $1.39 B GRP Ireland Utilities Utilities—Independent Power Producers
34 Permanent TSB Group Holdings plc $1.16 B IL0A Ireland Financials Banks
35 Hibernia REIT plc $1.14 B

(June 1, 2022)

HBRN Ireland Real Estate REIT—Diversified
36 COSMO Pharmaceuticals NV $1.07 B C43 Ireland Healthcare Drug Manufacturers—General
37 Uniphar plc $913.7 M UPR Ireland Healthcare Medical Care Facilities
38 Dalata Hotel Group plc $909.8 M DHG Ireland Consumer Discretionary Lodging
39 C&C Group plc $870.2 M CCR Ireland Consumer Staples Beverages—Brewers
40 Amarin Corporation plc $844.0 M AMRN Ireland Healthcare Biotechnology
41 Irish Continental Group plc $841.3 M IR5B Ireland Industrials Marine Shipping
42 Applegreen plc $830.9 M

(March 13, 2021)

APGN Ireland Consumer Discretionary Specialty Retail
43 Cimpress plc $799.1 M CMPR Ireland Communication Services Advertising Agencies
44 Total Produce plc $785.3 M

(July 1, 2021)

T7O Ireland Consumer Staples Farm Products
45 Glenveagh Properties plc $760.0 M GVR Ireland Consumer Discretionary Residential Construction
46 Cairn Homes plc $715.6 M C5H Ireland Consumer Discretionary Residential Construction
47 Irish Residential Properties REIT Plc $646.1 M IRES Ireland Real Estate REIT—Residential
48 FBD Holdings plc $557.9 M EG7 Ireland Financials Insurance—Property & Casualty
49 Origin Enterprises plc $536.0 M OIZ Ireland Consumer Staples Farm Products
50 Fly Leasing Limited $519.1 M

(July 1, 2021)

FLY Ireland Industrials Aerospace & Defense

Top Companies from Ireland as of Jan. 01, 2023

2. Medtronic

Market Cap (USD): $103.38 B

Stock: MDT

Country: Ireland

Sector: Healthcare

Industry: Medical Devices

business Medtronic Company Profile

4. Johnson Controls International plc

Market Cap (USD): $43.95 B

Stock: JCI

Country: Ireland

Sector: Industrials

Industry: Engineering & Construction

business Johnson Controls International plc Company Profile

8. Horizon Therapeutics Public Limited Company

Market Cap (USD): $25.70 B

Stock: HZNP

Country: Ireland

Sector: Healthcare

Industry: Drug Manufacturers—General

business Horizon Therapeutics Public Limited Company Company Profile

10. Flutter Entertainment plc

Market Cap (USD): $25.18 B

Stock: FLTR

Country: Ireland

Sector: Consumer Discretionary

Industry: Gambling

business Flutter Entertainment plc Company Profile

12. Ryanair Holdings plc

Market Cap (USD): $17.14 B

(Dec. 1, 2021)

Stock: RY4C

Country: Ireland

Sector: Industrials

Industry: Airlines

business Ryanair Holdings plc Company Profile

13. Kerry Group plc

Market Cap (USD): $16.34 B

Stock: KRZ

Country: Ireland

Sector: Consumer Staples

Industry: Packaged Foods

business Kerry Group plc Company Profile

14. ICON Public Limited Company

Market Cap (USD): $16.26 B

Stock: ICLR

Country: Ireland

Sector: Healthcare

Industry: Diagnostics & Research

business ICON Public Limited Company Company Profile

16. Seagate Technology plc

Market Cap (USD): $11.04 B

Stock: STX

Country: Ireland

Sector: Technology

Industry: Computer Hardware

business Seagate Technology plc Company Profile

17. AIB Group plc

Market Cap (USD): $10.83 B

Stock: A5G

Country: Ireland

Sector: Financials

Industry: Banks

business AIB Group plc Company Profile

18. Bank of Ireland Group plc

Market Cap (USD): $10.65 B

Stock: BIRG

Country: Ireland

Sector: Financials

Industry: Banks

business Bank of Ireland Group plc Company Profile

21. Jazz Pharmaceuticals plc

Market Cap (USD): $10.04 B

Stock: JAZZ

Country: Ireland

Sector: Healthcare

Industry: Biotechnology

business Jazz Pharmaceuticals plc Company Profile

23. James Hardie Industries plc

Market Cap (USD): $8.27 B

Stock: JHX

Country: Ireland

Sector: Basic Materials

Industry: Building Materials

business James Hardie Industries plc Company Profile

26. Alkermes plc

Market Cap (USD): $4.16 B

Stock: ALKS

Country: Ireland

Sector: Healthcare

Industry: Biotechnology

business Alkermes plc Company Profile

29. UDG Healthcare plc

Market Cap (USD): $3.27 B

(Aug. 1, 2021)

Stock: UDG

Country: Ireland

Sector: Healthcare

Industry: Medical Care Facilities

business UDG Healthcare plc Company Profile

30. Prothena Corporation plc

Market Cap (USD): $2.75 B

Stock: PRTA

Country: Ireland

Sector: Healthcare

Industry: Biotechnology

business Prothena Corporation plc Company Profile

34. Permanent TSB Group Holdings plc

Market Cap (USD): $1.16 B

Stock: IL0A

Country: Ireland

Sector: Financials

Industry: Banks

business Permanent TSB Group Holdings plc Company Profile

35. Hibernia REIT plc

Market Cap (USD): $1.14 B

(June 1, 2022)

Stock: HBRN

Country: Ireland

Sector: Real Estate

Industry: REIT—Diversified

business Hibernia REIT plc Company Profile

38. Dalata Hotel Group plc

Market Cap (USD): $909.8 M

Stock: DHG

Country: Ireland

Sector: Consumer Discretionary

Industry: Lodging

business Dalata Hotel Group plc Company Profile

40. Amarin Corporation plc

Market Cap (USD): $844.0 M

Stock: AMRN

Country: Ireland

Sector: Healthcare

Industry: Biotechnology

business Amarin Corporation plc Company Profile

41. Irish Continental Group plc

Market Cap (USD): $841.3 M

Stock: IR5B

Country: Ireland

Sector: Industrials

Industry: Marine Shipping

business Irish Continental Group plc Company Profile

42. Applegreen plc

Market Cap (USD): $830.9 M

(March 13, 2021)

Stock: APGN

Country: Ireland

Sector: Consumer Discretionary

Industry: Specialty Retail

business Applegreen plc Company Profile

44. Total Produce plc

Market Cap (USD): $785.3 M

(July 1, 2021)

Stock: T7O

Country: Ireland

Sector: Consumer Staples

Industry: Farm Products

business Total Produce plc Company Profile

47. Irish Residential Properties REIT Plc

Market Cap (USD): $646.1 M

Stock: IRES

Country: Ireland

Sector: Real Estate

Industry: REIT—Residential

business Irish Residential Properties REIT Plc Company Profile

49. Origin Enterprises plc

Market Cap (USD): $536.0 M

Stock: OIZ

Country: Ireland

Sector: Consumer Staples

Industry: Farm Products

business Origin Enterprises plc Company Profile

50. Fly Leasing Limited

Market Cap (USD): $519.1 M

(July 1, 2021)

Stock: FLY

Country: Ireland

Sector: Industrials

Industry: Aerospace & Defense

business Fly Leasing Limited Company Profile