| 1 | Apple Operations International LIMITED | Ireland | Cork | Hollyhill Industrial Estate | Cork | N/A | apple.***** | 1980 | $222,303,000,000 | 55,827 | N/A | N/A | 76941 |
| 2 | Apple Sales Ireland LIMITED | Ireland | Cork | Hollyhill Industrail Estate | Cork | N/A | N/A | 1981 | $218,894,000,000 | 56,922 | N/A | N/A | 86705 |
| 3 | Apple Sales International LIMITED | Ireland | Cork | Hollyhill Industrial Estate, Hollyhill | Cork | N/A | N/A | 1990 | $218,894,000,000 | 56,922 | N/A | N/A | 157192 |
| 4 | Apple Distribution International LIMITED | Ireland | Cork | Hollyhill Industrial Estate | Cork | T23 YK84 | N/A | 2009 | $218,894,000,000 | 56,922 | N/A | N/A | 470672 |
| 5 | Google Ireland LIMITED | Ireland | Dublin 4 | Gordon House | Dublin | D04 E5W5 | google.***** | 2003 | $83,988,236,100 | 5,310 | N/A | N/A | 368047 |
| 6 | Microsoft Ireland Operations LIMITED | Ireland | Dublin 18 | One Microsoft Place | Dublin | D18 P521 | microsoft.***** | 1996 | $79,862,403,000 | 2,808 | N/A | N/A | 256796 |
| 7 | Pse Kinsale Energy LIMITED | Ireland | Dublin | Riverside One | Dublin | D02 | N/A | 2003 | $71,049,963,300 | 43,266 | N/A | N/A | 904997 |
| 8 | Zurich Insurance Company LTD | Ireland | Dublin | Legal Department | Dublin | D01 R5P3 | N/A | 1928 | $68,124,000,000 | 11 | N/A | N/A | 900488 |
| 9 | Accenture Public LIMITED Company | Ireland | Dublin | 1 Grand Canal Square | Dublin | D02 P820 | accenture.***** | 2009 | $64,896,464,000 | 747,640 | N/A | N/A | 471706 |
| 10 | Microsoft Ireland Research Unlimited Company | Ireland | Dublin 24 | 70 Sir John Rogerson'S Quay | Dublin | D02R296 | N/A | 2001 | $62,989,541,000 | 1,283 | N/A | N/A | 342235 |
| 11 | Accenture LIMITED | Ireland | Dublin | 1 Grand Canal Square Grand Canal Harbour | Dublin | D02P820 | accenture.***** | 2001 | $61,594,305,000 | 693,748 | N/A | N/A | 340745 |
| 12 | Meta Platforms Ireland LIMITED | Ireland | Dublin | Grand Canal Harbour | Dublin | N/A | N/A | 2008 | $60,297,242,135 | 2,662 | N/A | N/A | 462932 |
| 13 | United Airlines , INC. | Ireland | Dublin | 61a South William Street | Dublin | N/A | united.***** | 1980 | $37,864,000,000 | 27 | N/A | N/A | 904061 |
| 14 | P.M.I. Trading Designated Activity Company | Ireland | Dublin | 25-28 North Wall Quay | Dublin | D01 H104 | N/A | 1991 | $36,583,847,000 | 13 | N/A | N/A | 174135 |
| 15 | Qatar Airways Group (q.c.s.c.) | Ireland | Dublin | Offices D045-02-36 Level 3 Mezzanine | Dublin | K67 P0E0 | N/A | 1993 | $35,572,289,110 | 7 | N/A | N/A | 908631 |
| 16 | Crh Public LIMITED Company | Ireland | Rathfarnham | Stonemason S Way | Dublin | D16 KH51 | crh.***** | 1970 | $35,572,000,000 | 79,770 | N/A | N/A | 12965 |
| 17 | Eli Lilly Ireland Holdings LIMITED | Ireland | Kinsale | Dunderrow | Cork | N/A | N/A | 2016 | $34,719,200,000 | 4 | N/A | N/A | 594065 |
| 18 | Linde Public LIMITED Company | Ireland | Dublin | Ten | Dublin | N/A | N/A | 2017 | $32,854,000,000 | 66,323 | N/A | N/A | 606357 |
| 19 | Medtronic Public LIMITED Company | Ireland | Galway | Building 2 Parkmore | Galway | N/A | medtronic.***** | 1981 | $32,364,000,000 | 106,050 | N/A | N/A | 545333 |
| 20 | Nutricia Infant Nutrition LIMITED | Ireland | Dublin 24 | 70 Sir John Rogerson'S Quay | Dublin | D02R296 | nutricia.***** | 2004 | $27,933,744,220 | 102,449 | N/A | N/A | 384474 |
| 21 | Pfizer Service Company Ireland Unlimited Company | Ireland | Dublin | The Watermarque Building | Dublin | D04K7N3 | N/A | 1990 | $27,888,666,000 | 53,449 | N/A | N/A | 167647 |
| 22 | Eaton CORPORATION Public LIMITED Company | Ireland | Dublin | Eaton House | Dublin | D04 Y0C2 | eaton.***** | 2012 | $24,878,000,000 | 95 | N/A | N/A | 512978 |
| 23 | Crh North America LIMITED | Ireland | Dublin | 42 Fitzwilliam Square West | Dublin | D02 R279 | N/A | 1974 | $24,002,608,119 | 79,560 | N/A | N/A | 47622 |
| 24 | Microsoft Round Island One Unlimited Company | Ireland | Dublin 24 | 70 Sir John Rogerson'S Quay | Dublin | D02R296 | N/A | 2001 | $23,458,951,000 | 17 | N/A | N/A | 348353 |
| 25 | Microsoft Ireland Investments Unlimited Company | Ireland | Dublin | 70 Sir John Rogerson'S Quay | Dublin | D02 R296 | N/A | 2021 | $23,267,628,000 | 4 | N/A | N/A | 686775 |
| 26 | Johnson Controls International Public LIMITED Company | Ireland | Cork | 1 Albert Quay | Cork | T12 X8N6 | johnsoncontrols.***** | 1960 | $22,952,000,000 | 94 | N/A | N/A | 543654 |
| 27 | Dcc Financial Services Ireland Unlimited Company | Ireland | Foxrock | Dcc House | Dublin | D18 PK00 | N/A | 2006 | $22,783,785,248 | 16,779 | N/A | N/A | 423681 |
| 28 | Dcc Public LIMITED Company | Ireland | Dublin 18 | Dcc House | Dublin | D18 PK00 | N/A | 1976 | $22,783,785,248 | 16,779 | N/A | N/A | 54858 |
| 29 | Arvato Ireland LIMITED | Ireland | Swords | Swords Business Park | Dublin | K67E1N1 | N/A | 1994 | $22,102,081,101 | 350 | N/A | N/A | 256965 |
| 30 | Southern Health Board | Ireland | Cork | Wilton | Cork | T12 PN8P | N/A | 2018 | $19,756,698,310 | 107,972 | N/A | N/A | N/A |
| 31 | Diageo PLC | Ireland | Dublin | Guinness Storehouse St. James'S Gate | Dublin | D08 AX97 | N/A | 1923 | $19,418,497,496 | 27,987 | N/A | N/A | 900038 |
| 32 | Trane Technologies Public LIMITED Company | Ireland | Swords | 170/175 Lakeview Drive | Dublin | K67 EW96 | N/A | 2009 | $17,677,600,000 | 40,579 | N/A | N/A | 469272 |
| 33 | Glaxosmithkline Trading Services LIMITED | Ireland | Dublin | 12 River Walk | Dublin | D24 | N/A | 2005 | $17,532,346,304 | 100 | N/A | N/A | 406446 |
| 34 | Mattest (ireland) LIMITED | Ireland | Dublin | Unit 2 Northwest Business Park | Dublin | D15 EF1H | mattest.***** | 1976 | $16,943,249,180 | 66,466 | N/A | N/A | 55796 |
| 35 | Agricultural Limestone LIMITED | Ireland | Dublin | 42 Fitzwilliam Square Dublin 2. | Dublin | D02R279 | crh.***** | 1948 | $16,943,249,180 | 66,466 | N/A | N/A | 12363 |
| 36 | Crh Luxembourg Finance (europe) LIMITED | Ireland | Dublin | 42 Fitzwilliam Square West | Dublin | D02 R279 | relmfinance.***** | 1990 | $16,943,249,180 | 66,466 | N/A | N/A | 159261 |
| 37 | Crh Group Services LIMITED | Ireland | Dublin | Stonemason'S Way | Dublin | D16 KH51 | crh.***** | 1968 | $16,943,249,180 | 66,466 | N/A | N/A | 26948 |
| 38 | Cencora Global Procurement LIMITED | Ireland | Cork | 8 Eastgate Avenue | Cork | N/A | N/A | 2022 | $16,647,781,553 | 7 | N/A | N/A | 728560 |
| 39 | Wpp Emerald LIMITED | Ireland | Dublin 24 | 6 Ely Place | Dublin | N/A | N/A | 2020 | $16,135,867,101 | 114,732 | N/A | N/A | 684753 |
| 40 | Farrans (ireland) LIMITED | Ireland | Saggart | N/A | Dublin | N/A | N/A | 1952 | $15,950,621,890 | 60,411 | N/A | N/A | 14147 |
| 41 | Ryan Bros. (ennis) LIMITED | Ireland | Ennis | Toonagh Quarries | Clare | V95 Y594 | N/A | 1925 | $15,950,621,890 | 60,411 | N/A | N/A | 7429 |
| 42 | Tradburn LIMITED | Ireland | Dublin | Fortunestown, Tallaght | Dublin | D24 | N/A | 1993 | $15,950,621,890 | 60,411 | N/A | N/A | 207037 |
| 43 | Diageo Ireland Holdings Unlimited Company | Ireland | Dublin | St. James'S Gate | Dublin | D08 AX97 | diageo.***** | 1977 | $15,849,096,600 | 23,720 | N/A | N/A | 59784 |
| 44 | Guinness Storehouse LIMITED | Ireland | Dublin | St James Gate | Dublin | D08 VF8H | guinness-storehouse.***** | 1993 | $15,849,096,600 | 23,720 | N/A | N/A | 209698 |
| 45 | Swords Laboratories Unlimited Company | Ireland | Swords | Watery Lane | Dublin | K67 AY91 | bms.***** | 1977 | $15,524,505,000 | 1,120 | N/A | N/A | 60709 |
| 46 | Kkr European Broadly Syndicated Loan Fund Designated Activity Company | Ireland | Dublin | 2nd Floor, Block 5, Irish Life Centre | Dublin | D01 P767 | N/A | 2021 | $15,138,270,117 | 1 | N/A | N/A | 704291 |
| 47 | Wpp PLC | Ireland | Dublin | 3 Christchurch Square | Dublin | D08 V0VE | mindshareworld.***** | 2008 | $15,037,839,600 | 101,387 | N/A | N/A | 906110 |
| 48 | Adient Public LIMITED Company | Ireland | Dublin | 25 North Wall Quay | Dublin | D01 H104 | N/A | 2016 | $14,688,000,000 | 70,000 | N/A | N/A | 584907 |
| 49 | Ryanair Holdings Public LIMITED Company | Ireland | Swords | Ryanair Dublin Office | Dublin | N/A | N/A | 1996 | $14,641,810,193 | 27,076 | N/A | N/A | 249885 |
| 50 | Dell Products Unlimited Company | Ireland | Dublin | S Quay 16 | Dublin | D01 XE03 | N/A | 1992 | $14,511,254,000 | 2,120 | N/A | N/A | 191034 |
| 51 | Aon Public LIMITED Company | Ireland | Dublin | Block B | Dublin | D02 VR98 | aon.***** | 2017 | $13,376,000,000 | 50,688 | N/A | N/A | 604607 |
| 52 | Ing Bank N.V. | Ireland | Dublin | Dom Marmion House | Dublin | D16 FD96 | ingwb.***** | 1993 | $13,098,772,389 | 71,287 | N/A | N/A | 903416 |
| 53 | Sumitomo Mitsui Finance And Leasing Company, LIMITED | Ireland | Dublin | 28 Fitzwilliam Street Lower | Dublin | N/A | N/A | 1948 | $12,991,544,000 | 3 | N/A | N/A | 907386 |
| 54 | Roadstone LIMITED | Ireland | Tallaght | Fortunestown | Dublin | N/A | roadstone.***** | 1944 | $12,416,303,320 | 54,239 | N/A | N/A | 11035 |
| 55 | Roadstone Provinces LIMITED | Ireland | Saggart | Naas Road | Dublin | N/A | roadstonewood.***** | 1945 | $12,416,303,320 | 54,239 | N/A | N/A | 11228 |
| 56 | Smurfit Kappa Group LIMITED | Ireland | Dublin 4 | Beech Hill | Dublin | D04 N2R2 | smurfitkappa.***** | 2007 | $12,252,337,112 | 46,982 | N/A | N/A | 433527 |
| 57 | Flutter Entertainment Public LIMITED Company | Ireland | Dun Laoghaire | Belfield Office Park | Dublin | D04 V972 | flutter.***** | 1958 | $11,790,000,000 | 23,009 | N/A | N/A | 16956 |
| 58 | Janssen Sciences Ireland Unlimited Company | Ireland | Dublin 24 | Airton Road | Dublin | D24 WR89 | its.***** | 1953 | $11,786,500,158 | 1,023 | N/A | N/A | 472372 |
| 59 | Regeneron Ireland Designated Activity Company | Ireland | Dublin | One | Dublin | D02 HH27 | N/A | 2013 | $11,157,196,000 | 1,868 | N/A | N/A | 519550 |
| 60 | Ge Vernova International LLC | Ireland | Dublin | Clonshaugh Industrial Estate | Dublin | D17 | N/A | 1972 | $10,930,609,000 | 3 | N/A | N/A | 901609 |
| 61 | Bank Of Ireland | Ireland | Dublin | 40 Mespil Road | Dublin | D04 C2N4 | bankofireland.***** | 1783 | $10,458,754,120 | 11,131 | N/A | N/A | N/A |
| 62 | Bank Of Ireland Group Public LIMITED Company | Ireland | Dublin | 2 College Green | Dublin | D02 VR66 | bankofireland.***** | 2016 | $10,458,754,120 | 11,131 | N/A | N/A | 593672 |
| 63 | Oracle EMEA LIMITED | Ireland | Dublin | East Point Business Park | Dublin | D03 | oracle.***** | 1990 | $10,244,634,291 | 918 | N/A | N/A | 158973 |
| 64 | Willis Towers Watson Public LIMITED Company | Ireland | Dublin | Elm Park Business Campus | Dublin | D04 P231 | towerswatson.***** | 2009 | $9,930,000,000 | 48,900 | N/A | N/A | 475616 |
| 65 | Comrie LIMITED | Ireland | N/A | Fitzwilliam 28 Fitzwilliam Street Lower | N/A | D02 KF20 | N/A | 1988 | $9,900,787,842 | 146 | N/A | N/A | 135059 |
| 66 | Msdig Holdings Unlimited Company | Ireland | Dublin | Red Oak North | Dublin | D18 X5K7 | N/A | 2003 | $9,644,746,000 | 292 | N/A | N/A | 376424 |
| 67 | IBM Ireland Product Distribution LIMITED | Ireland | Droichead Na Dothra | Ibm House | Dublin | D04NP20 | N/A | 1983 | $9,572,190,000 | 1,283 | N/A | N/A | 92815 |
| 68 | Infinite Fashion Ecommerce LIMITED | Ireland | Dublin | 1-2 Victoria Buildings | Dublin | D04 XN32 | N/A | 2021 | $9,565,593,801 | 377 | N/A | N/A | 699170 |
| 69 | Peninsula Petroleum LIMITED | Ireland | Dublin 24 | Central Quay,second Floor, Block B | Dublin | D02 RR77 | N/A | 1996 | $9,556,428,000 | 475 | N/A | N/A | 378557 |
| 70 | Dole Public LIMITED Company | Ireland | Dublin | 29 North Anne Street | Dublin | D07 PH36 | doleplc.***** | 2017 | $9,228,853,000 | 37,422 | N/A | N/A | 606201 |
| 71 | Citibank Europe Public LIMITED Company | Ireland | Dublin | Citigroup Building | Dublin | D01 T8Y1 | citigroup.***** | 1965 | $9,210,000,000 | 16,647 | N/A | N/A | 132781 |
| 72 | The West Coast Cooler CO. LIMITED | Ireland | Dublin | 50/53 Bow Street | Dublin | D07 | N/A | 1985 | $9,202,803,456 | 0 | N/A | N/A | 109864 |
| 73 | Peninsula Petroleum Consolidated LIMITED | Ireland | Droichead Na Dothra | 2 Shelbourne Buildings | Dublin | N/A | N/A | 2014 | $9,191,344,582 | 394 | N/A | N/A | 554725 |
| 74 | Kingspan Group Public LIMITED Company | Ireland | Kingscourt | Dublin Road | Cavan | A82 XY31 | kingspan.***** | 1979 | $9,103,028,864 | 25,401 | N/A | N/A | 70576 |
| 75 | Adobe Systems Software Ireland LIMITED | Ireland | Saggart Dublin 24 | 4-6 Riverwalk, | Dublin | D24 DCW0 | N/A | 2001 | $9,076,744,000 | 4,819 | N/A | N/A | 344992 |
| 76 | Smurfit Kappa Investments LIMITED | Ireland | Dublin 4 | C/o Smurfit Kappa Group Beech Hill | Dublin | N/A | N/A | 2004 | $9,008,905,353 | 42,259 | N/A | N/A | 380620 |
| 77 | Linkedin Ireland Unlimited Company | Ireland | Dublin 24 | One Wilton Park | Dublin | D02 FX04 | N/A | 2009 | $8,936,461,616 | 2,135 | N/A | N/A | 477441 |
| 78 | Analog Devices International Unlimited Company | Ireland | Limerick | Raheen Industrial Estate | Limerick | V94 N4V2 | N/A | 2012 | $8,550,114,000 | 1,757 | N/A | N/A | 519435 |
| 79 | Infinite Styles Ecommerce CO., LIMITED | Ireland | Dublin | 1-2 Victoria Building | Dublin | D04 XN32 | N/A | 2020 | $8,352,472,330 | 24 | N/A | N/A | 679064 |
| 80 | Icon Public LIMITED Company | Ireland | Dublin 18 | South County Business Park | Dublin | N/A | iconplc.***** | 1990 | $8,281,676,000 | 40,860 | N/A | N/A | 145835 |
| 81 | Decathlon Sports Ireland LIMITED | Ireland | Ballymun | Saint Margaret'S Road | Dublin | D11 FN84 | decathlon.***** | 2016 | $8,073,926,586 | 265 | N/A | N/A | 589659 |
| 82 | Amazon Data Services Ireland LIMITED | Ireland | Dublin 4 | One Burlington Plaza | Dublin | D04RH96 | N/A | 2004 | $7,502,879,669 | 1,634 | N/A | N/A | 390566 |
| 83 | Boston Scientific Medical Device LIMITED | Ireland | Galway | Ballybrit Business Park | Galway | N/A | icsmedical.***** | 2017 | $7,371,178,000 | 32 | N/A | N/A | 615709 |
| 84 | Kerry Group Public LIMITED Company | Ireland | Tralee | Prince'S Street | Kerry | V92 EH11 | kerrygroup.***** | 1985 | $7,327,578,683 | 21,647 | N/A | N/A | 111471 |
| 85 | Howmedica International S. De R.L. | Ireland | Limerick | Cloughkeating Business Park | Limerick | V94 X6T4 | stryker.***** | 1971 | $7,320,000,000 | 20,036 | N/A | N/A | 901582 |
| 86 | Google Cloud EMEA LIMITED | Ireland | Dublin | 70 Sir John Rogerson'S Quay | Dublin | D02 R296 | N/A | 2019 | $7,236,700,000 | 415 | N/A | N/A | 660412 |
| 87 | Vmware International Unlimited Company | Ireland | Cork | Behan House | Cork | P31 PF68 | vmware.***** | 2005 | $6,906,928,000 | 15,058 | N/A | N/A | 402208 |
| 88 | Ishares Physical Metals Public LIMITED Company | Ireland | Dublin 24 | J.p. Morgan 200 Capital Dock | Dublin | D02 RK57 | N/A | 2011 | $6,871,088,424 | 7 | N/A | N/A | 494646 |
| 89 | Allied Irish Banks, Public LIMITED Company | Ireland | Dublin | 10 Molesworth Street | Dublin | D02 R126 | personal.***** | 1966 | $6,729,980,912 | 10,655 | N/A | N/A | 24173 |
| 90 | Aib Group Public LIMITED Company | Ireland | Dublin | 10 Molesworth Street | Dublin | D02 R126 | N/A | 2016 | $6,720,463,340 | 10,655 | N/A | N/A | 594283 |
| 91 | European Refreshments Unlimited Company | Ireland | Drogheda | Southgate | Louth | A92 YK7W | N/A | 2005 | $6,701,561,003 | 930 | N/A | N/A | 403110 |
| 92 | Seagate Technology Holdings Public LIMITED Company | Ireland | Dublin | 38/39 Fitzwilliam Square West | Dublin | D02 NX53 | N/A | 2017 | $6,551,000,000 | 28 | N/A | N/A | 606203 |
| 93 | Gilead Sciences Ireland Unlimited Company | Ireland | Carrigtwohill | Ida Business & Technology Park | Cork | N/A | gilead.***** | 1997 | $6,550,991,000 | 631 | N/A | N/A | 259755 |
| 94 | Aercap Holdings N.V | Ireland | Dublin | Aercap House | Dublin | D02 YX20 | N/A | 1973 | $6,530,546,000 | 641 | N/A | N/A | 908351 |
| 95 | Sfdc Ireland LIMITED | Ireland | Dublin | Salesforce Tower Dublin | Dublin | D01 W2Y3 | N/A | 2004 | $6,124,438,672 | 2,817 | N/A | N/A | 394272 |
| 96 | Electricity Supply Board | Ireland | Dublin | 27 Fitzwilliam Street Lower | Dublin | D02 KT92 | esb.***** | 1927 | $6,111,639,000 | 7,870 | N/A | N/A | N/A |
| 97 | Alexion Pharma International Operations LIMITED | Ireland | Dublin | College Business & Technology Park | Dublin | D15 R925 | astrazeneca.***** | 2013 | $6,003,050,000 | 1,037 | N/A | N/A | 528478 |
| 98 | Xerox Xf Holdings (ireland) Designated Activity Company | Ireland | Dublin | Plaza 211 Blanchardstown Corporate Park 2 | Dublin | D15 AP2D | N/A | 1998 | $5,951,558,501 | 16,800 | N/A | N/A | 282296 |
| 99 | Xerox (ireland) LIMITED | Ireland | Dublin | Ballycoolin Business Park | Dublin | D15 PD87 | N/A | 1989 | $5,951,558,501 | 16,800 | N/A | N/A | 149819 |
| 100 | Xerox (europe) LIMITED | Ireland | Dublin | Ballycoolin Business Park | Dublin | D15 PD87 | xerox.***** | 1998 | $5,951,558,501 | 1,850 | N/A | N/A | 282298 |