| 1 | Eaton CORPORATION Public LIMITED Company | Ireland | Dublin | Eaton House | Dublin | D04 Y0C2 | eaton.***** | 2012 | $24,878,000,000 | 95 | N/A | N/A | 512978 |
| 2 | Wpp PLC | Ireland | Dublin | 3 Christchurch Square | Dublin | D08 V0VE | mindshareworld.***** | 2008 | $15,037,839,600 | 101,387 | N/A | N/A | 906110 |
| 3 | Abbvie Manufacturing Management Unlimited Company | Ireland | Dublin | Woodford Business Park | Dublin | D17 N603 | N/A | 2012 | $5,080,101,000 | 79 | N/A | N/A | 521800 |
| 4 | Emc Information Systems International Unlimited Company | Ireland | Cork | Ovens | Cork | P31 YK80 | N/A | 1988 | $4,664,841,000 | 2,238 | N/A | N/A | 461022 |
| 5 | Cimpress Public LIMITED Company | Ireland | Dundalk | First Floor Building 3 | Louth | N/A | N/A | 1995 | $3,291,856,000 | 15,716 | N/A | N/A | 607465 |
| 6 | Mark Anthony Brands International Unlimited Company | Ireland | Dublin | 4th Floor, Donnybrook House | Dublin | D04 WN59 | markanthonyintl.***** | 2018 | $1,699,301,000 | 156 | N/A | N/A | 625558 |
| 7 | Globoforce LIMITED | Ireland | Dublin | 19 Beckett Way | Dublin | D12 H993 | N/A | 1997 | $1,155,519,000 | 572 | N/A | N/A | 264562 |
| 8 | Spencer Stuart Public LIMITED Company | Ireland | Dublin | Whitaker Court, Block C Fl 2 | Dublin | N/A | N/A | 2023 | $1,067,807,000 | 2,824 | N/A | N/A | 734766 |
| 9 | Gartner Ireland LIMITED | Ireland | Dublin 24 | 3rd Floor,two Park Place | Dublin | N/A | N/A | 1991 | $1,063,532,623 | 78 | N/A | N/A | 182294 |
| 10 | Novus Technical Services LIMITED | Ireland | Limerick | 45 O'Connell Street | Limerick | V94 XE18 | N/A | 2015 | $608,029,628 | 4,510 | N/A | N/A | 556855 |
| 11 | Schneider Electric IT LIMITED | Ireland | Galway | City East Business Park | Galway | H91 Ht73 | N/A | 2019 | $551,118,210 | 67 | N/A | N/A | 660893 |
| 12 | Org Global Investment Holdings Unlimited Company | Ireland | Cork | 6th Floor, Penrose Dock 2 Alfred Street | Cork | T23 YY09 | N/A | 2005 | $367,490,014 | 2,488 | N/A | N/A | 399091 |
| 13 | Mrbp Motors Unlimited Company | Ireland | Limerick | Icc House | Limerick | N/A | N/A | 2003 | $345,820,693 | 381 | N/A | N/A | 366657 |
| 14 | Fisc-Ireland LIMITED | Ireland | Dublin | 1 Waterside | Dublin | D24 W1HP | fidelityinvestments.***** | 1996 | $315,955,881 | 1,914 | N/A | N/A | 245656 |
| 15 | Pa Consulting Services LIMITED | Ireland | Dublin | One Earlsfort Centre | Dublin | D02 X668 | N/A | 1988 | $315,214,456 | 2 | N/A | N/A | 902849 |
| 16 | Hubbell Global Operations LIMITED | Ireland | Dublin | 10 Earlsfort Terrace | Dublin | D02 T380 | N/A | 2015 | $278,754,927 | 12 | N/A | N/A | 559449 |
| 17 | Rosderra Services Unlimited Company | Ireland | Tullamore | Carrick Road | Offaly | N/A | N/A | 2008 | $259,177,732 | 831 | N/A | N/A | 452144 |
| 18 | Wolters Kluwer Finance Ireland Designated Activity Company | Ireland | Dublin | 3 Haddington Centre | Dublin | D04 T253 | N/A | 2015 | $255,497,466 | 5 | N/A | N/A | 570191 |
| 19 | Ares Senior Direct Lending Master Fund Designated Activity Company | Ireland | Dublin | 4th Floor | Dublin | D04 A4E0 | N/A | 2018 | $245,387,652 | 2 | N/A | N/A | 620105 |
| 20 | Bplh Ireland Unlimited Company | Ireland | Dublin 24 | 10 Earlsfort Terrace | Dublin | D02T380 | N/A | 2012 | $243,189,000 | 23 | N/A | N/A | 516910 |
| 21 | Burlawn LIMITED | Ireland | Dublin | 1st Floor, Block T | Dublin | K78X5W6 | N/A | 2015 | $234,748,953 | 488 | N/A | N/A | 562323 |
| 22 | The Faraday Procurement Company LIMITED | Ireland | Dublin | Grand Canal Hotel | Dublin | D04 X5X7 | N/A | 2020 | $217,271,803 | 106 | N/A | N/A | 682313 |
| 23 | Canada Life Group Services LIMITED | Ireland | Dublin 13 | Irish Life Centre | Dublin | N/A | life-careers.***** | 2005 | $203,009,811 | 816 | N/A | N/A | 410263 |
| 24 | Ardagh Treasury LIMITED | Ireland | Dublin | South County Business Park | Dublin | D18 T672 | N/A | 1989 | $200,218,811 | 2 | N/A | N/A | 148774 |
| 25 | Citco Fund Services (ireland) LIMITED | Ireland | Dublin | Custom House Plaza | Dublin | N/A | N/A | 1998 | $176,430,000 | 897 | N/A | N/A | 282013 |
| 26 | Wfso LIMITED | Ireland | Cork | Lissarda Business Park | Cork | P14 YN56 | N/A | 2012 | $163,877,589 | 15 | N/A | N/A | 514077 |
| 27 | Indaver Ireland LIMITED | Ireland | Dun Laoghaire | 1st Floor, the Highline | Dublin | A96 KW29 | N/A | 1977 | $153,242,246 | 232 | N/A | N/A | 59667 |
| 28 | Hpc Sales LIMITED | Ireland | Dublin | John F Kennedy Road | Dublin | D12 KR94 | N/A | 2013 | $147,662,215 | 353 | N/A | N/A | 525639 |
| 29 | Nobox Outsourcing LIMITED | Ireland | Dublin 13 | Unit 19 Grange Parade | Dublin | D13A3T2 | N/A | 2013 | $107,192,743 | 2,459 | N/A | N/A | 524741 |
| 30 | Source Topco LIMITED | Ireland | Dublin | 18 the Courtyard | Dublin | D22 | N/A | 2019 | $104,513,346 | 165 | N/A | N/A | 656522 |
| 31 | Fieldport Holdings LIMITED | Ireland | Dublin | 55 Charlemont Place | Dublin | D02 F985 | N/A | 2018 | $98,640,348 | 599 | N/A | N/A | 622407 |
| 32 | Ocs One Complete Solution LIMITED | Ireland | Dublin | Unit 38 Airways Industrial Estate | Dublin | N/A | ocs.***** | 1970 | $84,410,510 | 2,553 | N/A | N/A | 31351 |
| 33 | Arago Investments LIMITED | Ireland | Dublin 24 | 12 Lower Hatch Street | Dublin | D02R682 | N/A | 2009 | $81,527,220 | 537 | N/A | N/A | 470045 |
| 34 | Lucozade Ribena Suntory Ireland LIMITED | Ireland | Dublin | Carmanhall Road | Dublin | N/A | N/A | 2013 | $80,781,484 | 46 | N/A | N/A | 534426 |
| 35 | Gerson Lehrman Group (ireland) LIMITED | Ireland | Lucan | 69 Esker Wood Drive | Dublin | K78 PX45 | glg.***** | 2008 | $76,842,189 | 102 | N/A | N/A | 463232 |
| 36 | Occam Management LIMITED | Ireland | Bray | Unit 39 Block H | Wicklow | A98V8P2 | N/A | 2011 | $74,203,371 | 1,741 | N/A | N/A | 502992 |
| 37 | Ricklyon LIMITED | Ireland | Dublin | Unit 2 | Dublin | D24 | N/A | 2021 | $71,285,344 | 363 | N/A | N/A | 693487 |
| 38 | Kdp Global Sourcing LIMITED | Ireland | Newbridge | Kdp Ireland Great Connell Business Park | Kildare | W12 NN23 | N/A | 2019 | $70,313,000 | 6 | N/A | N/A | 657429 |
| 39 | Aa Ireland LIMITED | Ireland | Dublin | 20/21 South William Street | Dublin | D02 XE77 | theaa.***** | 2004 | $69,237,040 | 472 | N/A | N/A | 389194 |
| 40 | Abtran Unlimited Company | Ireland | Cork | Cork Business & Technology Park | Cork | T12 DX85 | abtran.***** | 1997 | $68,280,938 | 1,488 | N/A | N/A | 260018 |
| 41 | Regsont LIMITED | Ireland | Cork | Republic of Work | Cork | T12 RD43 | N/A | 2016 | $65,074,802 | 5 | N/A | N/A | 579375 |
| 42 | Skillnet Ireland Company LIMITED By Guarantee | Ireland | Dublin | 5th Floor Q House | Dublin | D18 E268 | skillnets.***** | 1999 | $64,753,455 | 54 | N/A | N/A | 298694 |
| 43 | Kbi Global Investors LIMITED | Ireland | Dublin | 3rd Floor 2 Harbourmaster Place | Dublin | D01 X5P3 | N/A | 1989 | $63,796,910 | 62 | N/A | N/A | 141475 |
| 44 | Scalapay LIMITED | Ireland | Dublin | 7 D'Olier Street | Dublin | D02HF60 | scalapay.***** | 2019 | $60,777,100 | 191 | N/A | N/A | 643296 |
| 45 | Rps Group LIMITED | Ireland | Dun Laoghaire | West Pier Business Campus | Dublin | N/A | rpsgroup.***** | 1982 | $60,756,844 | 727 | N/A | N/A | 91911 |
| 46 | Willow Impact LIMITED | Ireland | Dublin | 55 Percy Place | Dublin | N/A | N/A | 2021 | $57,940,455 | 701 | N/A | N/A | 696023 |
| 47 | Dashcap LIMITED | Ireland | Dublin | Unit 3300 | Dublin | D24 TD21 | tradesupplysolutions.***** | 2016 | $57,530,137 | 3 | N/A | N/A | 583583 |
| 48 | Veolia Energy Services Ireland LIMITED | Ireland | Dublin 15 | Suite 18 Plaza 256, | Dublin | D15 H210 | veolia.***** | 2000 | $57,108,369 | 315 | N/A | N/A | 327737 |
| 49 | Renaissance Services Of Europe LIMITED | Ireland | Dublin | 60 Dawson Street, 1st Floor | Dublin | D02 K330 | N/A | 2004 | $56,501,000 | 114 | N/A | N/A | 393163 |
| 50 | Deloitte Services Unlimited Company | Ireland | Dublin | 29 Earlsfort Terrace Dublin 2. | Dublin | D02AY28 | N/A | 1989 | $55,424,090 | 258 | N/A | N/A | 150808 |
| 51 | Ge Capital European Funding Unlimited Company | Ireland | Dublin | 86-88 Leeson Street Lower | Dublin | D02 A668 | gecapital.***** | 1985 | $54,875,000 | 29 | N/A | N/A | 107727 |
| 52 | Itron Management Services Ireland, LIMITED | Ireland | Cork | Block 1000, Unit 1105 | Cork | V35 TK35 | N/A | 2013 | $53,447,892 | 154 | N/A | N/A | 534741 |
| 53 | Aa Euro Recruitment Group LIMITED | Ireland | Waterford | 1 Adelphi Quay | Waterford | X91D5PF | N/A | 2004 | $51,788,769 | 732 | N/A | N/A | 383352 |
| 54 | Airbus Financial Services LIMITED | Ireland | Dublin | 5th Floor | Dublin | D01 K5C7 | airbus.***** | 1989 | $51,245,000 | 55 | N/A | N/A | 144820 |
| 55 | Zompcove LIMITED | Ireland | Dublin 18 | Dcc House Leopardstown Road | Dublin | N/A | N/A | 2016 | $50,887,884 | 3 | N/A | N/A | 594591 |
| 56 | Opusalpha Purchaser LIMITED | Ireland | Dublin | 1 Windmill Lane | Dublin | D02 F206 | N/A | 2003 | $50,805,046 | 2 | N/A | N/A | 371914 |
| 57 | Cxc Corporate Managed Services LIMITED | Ireland | Dublin 7 | The Black Church, St. Mary'S Place | Dublin | D07P4AX | N/A | 2015 | $49,735,380 | 39 | N/A | N/A | 558888 |
| 58 | Atkinsréalis Ireland LIMITED | Ireland | Dublin | Atkinsréalis House 150 - 155 Airside Business Park | Dublin | K67 K5W4 | N/A | 1994 | $48,971,695 | 335 | N/A | N/A | 222745 |
| 59 | Globalization Partners Ireland Consulting LIMITED | Ireland | Dundalk | First Floor | Louth | N/A | N/A | 2017 | $48,442,665 | 262 | N/A | N/A | 596954 |
| 60 | Cascade Management LIMITED | Ireland | Dublin 15 | Unit 103 Northwest Business Park | Dublin | D15R883 | N/A | 2017 | $48,213,911 | 93 | N/A | N/A | 612281 |
| 61 | Web Component Trading Unlimited Company | Ireland | Tralee | Innovation Works | Kerry | V92 A78N | freeflow.***** | 2007 | $47,891,450 | 9 | N/A | N/A | 342767 |
| 62 | I.T. Alliance Group LIMITED | Ireland | Dublin 12 | Unit 12c Joyce Way Park West Business Park | Dublin | D12AY95 | italliancegroup.***** | 1997 | $47,185,930 | 299 | N/A | N/A | 257743 |
| 63 | Fbf Investments LIMITED | Ireland | Walkinstown | Unit 2c 1 Avonbeg Industrial Estate | Dublin | N/A | N/A | 2017 | $44,935,234 | 178 | N/A | N/A | 612555 |
| 64 | Brite:bill LIMITED | Ireland | Dublin | 6 Beckett Way | Dublin | N/A | N/A | 2007 | $44,339,586 | 27 | N/A | N/A | 441882 |
| 65 | Lanecan LIMITED | Ireland | Dublin 18 | Dcc House Leopardstown Road | Dublin | N/A | N/A | 2016 | $44,193,287 | 2 | N/A | N/A | 594420 |
| 66 | Global Shares Ireland LIMITED | Ireland | Clonakilty | Unit 2,building D, | Cork | P85 EY09 | globalshares.***** | 2005 | $42,961,908 | 359 | N/A | N/A | 412396 |
| 67 | Iq Eq Fund Management (ireland) LIMITED | Ireland | Dublin | 76 Sir John Rogerson'S Quay | Dublin | D02 C9D0 | N/A | 1989 | $40,611,001 | 92 | N/A | N/A | 148223 |
| 68 | Ardan Advisory LIMITED | Ireland | Dublin | 39/40 Dawson Street | Dublin | N/A | N/A | 2012 | $38,644,559 | 388 | N/A | N/A | 515571 |
| 69 | Aon Solutions Ireland LIMITED | Ireland | Dublin | Block D 5th Floor | Dublin | D02 VH94 | aonhewitt.***** | 2002 | $36,382,245 | 169 | N/A | N/A | 356441 |
| 70 | Rory Mcilroy Management Services LIMITED | Ireland | Dublin | Hamilton House | Dublin | D02 P283 | N/A | 2013 | $36,127,167 | 7 | N/A | N/A | 534684 |
| 71 | J.P. Morgan Administration Services (ireland) LIMITED | Ireland | Dublin 24 | J.p. Morgan 200 Capital Dock | Dublin | D02 RK57 | jpmorgan.***** | 1990 | $35,430,179 | 1 | N/A | N/A | 159676 |
| 72 | Adhesives Research, International, LIMITED | Ireland | Limerick | Raheen Business Centre | Limerick | V94 E4XK | N/A | 1997 | $35,107,610 | 74 | N/A | N/A | 260528 |
| 73 | Learnupon LIMITED | Ireland | Dublin | Block A Floor 1 Ocean House | Dublin | D07 DHT3 | learnupon.***** | 2011 | $34,257,493 | 259 | N/A | N/A | 503858 |
| 74 | Aib Commercial Finance LIMITED | Ireland | Dublin | 10 Molesworth Street | Dublin | D02 R126 | N/A | 1989 | $33,915,669 | 40 | N/A | N/A | 148062 |
| 75 | Adhesives Research, Ireland, LIMITED | Ireland | Raheen | Raheen Business Park | Clare | V94 VH22 | adhesivesresearch.***** | 1997 | $33,903,076 | 66 | N/A | N/A | 260529 |
| 76 | Palm Fort LIMITED | Ireland | Listowel | Clieveragh | Kerry | N/A | N/A | 2016 | $33,341,045 | 33 | N/A | N/A | 576741 |
| 77 | Rosbeg Partners LIMITED | Ireland | Dublin | Unit 520 Beech Road, Western Industrial Estate | Dublin | D12 | lmi3d.***** | 1989 | $32,865,210 | 188 | N/A | N/A | 136690 |
| 78 | Ballagh Lodge Holdings LIMITED | Ireland | Sligo | Collins Mcnicholas Recruitment Ltd | Sligo | F91 FVH2 | N/A | 2003 | $32,387,909 | 3 | N/A | N/A | 371602 |
| 79 | Chambers Properties LIMITED | Ireland | Dublin | 18 Mount Street Upper | Dublin | D02 ER26 | N/A | 2021 | $32,108,784 | 2 | N/A | N/A | 693757 |
| 80 | Scor Management Services Ireland LIMITED | Ireland | Dublin 24 | 6th Floor | Dublin | D02A342 | N/A | 2014 | $31,811,956 | 106 | N/A | N/A | 553668 |
| 81 | Lyreco Ireland LIMITED | Ireland | Dublin | Unit 41 Parkwest Industrial Estate | Dublin | D12 X767 | why.***** | 1970 | $29,989,869 | 102 | N/A | N/A | 32288 |
| 82 | Cloosh Valley Wind Farm Holdings Designated Activity Company | Ireland | Dublin | South Bank House | Dublin | D04 TR29 | N/A | 2015 | $29,807,499 | 5 | N/A | N/A | 563967 |
| 83 | Mapletip LIMITED | Ireland | Dublin | 4 Herbert Place | Dublin | D02 WY46 | N/A | 2018 | $29,101,090 | 14 | N/A | N/A | 629234 |
| 84 | Lian Sports LIMITED | Ireland | Dublin 24 | 6 Fitzwilliam Place | Dublin | D02XE61 | N/A | 2014 | $28,722,518 | 4 | N/A | N/A | 546623 |
| 85 | Bronze Oak LIMITED | Ireland | Dublin | Court Harmony Row | Dublin | D02 H270 | N/A | 2018 | $28,581,624 | 342 | N/A | N/A | 629768 |
| 86 | Stennock LIMITED | Ireland | Lucan | The Grange | Dublin | N/A | N/A | 2015 | $28,120,599 | 4 | N/A | N/A | 569411 |
| 87 | Mylan Pharma Acquisition LIMITED | Ireland | Galway | Inverin | Galway | N/A | N/A | 2009 | $28,095,895 | 2 | N/A | N/A | 477387 |
| 88 | Pgim Private Capital (ireland) LIMITED | Ireland | Letterkenny | Ida Business Park | Donegal | F92 FP83 | N/A | 2018 | $27,906,303 | 22 | N/A | N/A | 635793 |
| 89 | Carlson & CO. LIMITED | Ireland | Dublin | G12 Calmount Park | Dublin | D12 TH56 | carlson.***** | 1995 | $27,770,642 | 22 | N/A | N/A | 227444 |
| 90 | Xpert Cosmetics LIMITED | Ireland | Naas | Unit Z M7 Naas Business Park | Kildare | N/A | N/A | 2019 | $27,082,620 | 89 | N/A | N/A | 655619 |
| 91 | Birchson Unlimited Company | Ireland | Castlebellingham | Derrycannagh | Louth | N/A | N/A | 2019 | $27,072,685 | 10 | N/A | N/A | 646049 |
| 92 | Fairstone Assist LIMITED | Ireland | Stillorgan | 2nd Floor Maple House | Dublin | N/A | N/A | 1994 | $26,966,329 | 19 | N/A | N/A | 222472 |
| 93 | Ringlestown Consultancy LIMITED | Ireland | Navan | Ringlestown House | Meath | C15 H049 | N/A | 2013 | $26,953,109 | 86 | N/A | N/A | 524691 |
| 94 | Smart Horizon LIMITED | Ireland | Swords | Unit 7g Swords Business Park | Dublin | K67X042 | N/A | 2014 | $26,798,852 | 215 | N/A | N/A | 555119 |
| 95 | Fintua LIMITED | Ireland | Kilkenny | Ida Business & Technology Park | Kilkenny | N/A | taxbackinternational.***** | 2005 | $24,664,941 | 41 | N/A | N/A | 412265 |
| 96 | Lillington LIMITED | Ireland | Dublin | 3 Christchurch Square | Dublin | N/A | N/A | 1989 | $24,570,089 | 118 | N/A | N/A | 141873 |
| 97 | Oxygen-Care LIMITED | Ireland | Dublin | Corrig Road | Dublin | D18 | N/A | 1972 | $23,999,790 | 69 | N/A | N/A | 38932 |
| 98 | Psb Industrial Products LIMITED | Ireland | Cootehill | Cavmac Building | Cavan | N/A | abconireland.***** | 2005 | $23,860,635 | 162 | N/A | N/A | 397862 |
| 99 | Foobay LIMITED | Ireland | Cork | Wilton | Cork | T12 PN8P | N/A | 2011 | $22,737,356 | 100 | N/A | N/A | 504811 |
| 100 | Roldia LIMITED | Ireland | Dublin 12 | Unite 1a Western Industrial Estate | Dublin | N/A | N/A | 2011 | $22,553,561 | 58 | N/A | N/A | 506363 |