| 1 | Richmond Marketing LIMITED | Ireland | Dublin | 1st Floor Harmony Court | Dublin | D02 VY52 | richmondmarketing.***** | 1989 | $278,179,488 | 172 | N/A | N/A | 666758 |
| 2 | Omnicommediagroup (ireland) LIMITED | Ireland | Dublin | Sixth Floor Stephen Court | Dublin | N/A | N/A | 1999 | $144,467,420 | 168 | N/A | N/A | 312627 |
| 3 | Allegro LIMITED | Ireland | Dublin | Jamestown House | Dublin | D11 P2TT | allegro.***** | 1947 | $137,917,604 | 229 | N/A | N/A | 11749 |
| 4 | Mindshare Media Ireland LIMITED | Ireland | Dublin | 3 Christchurch Square | Dublin | D08 VOVE | N/A | 1999 | $84,415,983 | 39 | N/A | N/A | 307201 |
| 5 | Optimum Media Direction (ireland) LIMITED | Ireland | Dublin | Sixth Floor Stephen Court | Dublin | N/A | N/A | 2008 | $72,933,327 | 4 | N/A | N/A | 456210 |
| 6 | Phd Media (ireland) LIMITED | Ireland | Dublin | Stephen Court | Dublin | D02 N960 | phdmedia.***** | 2008 | $71,534,093 | 15 | N/A | N/A | 456209 |
| 7 | Essencemediacom Ireland LIMITED | Ireland | Dublin | Marconi House | Dublin | N/A | N/A | 2007 | $67,862,103 | 39 | N/A | N/A | 448935 |
| 8 | Young Advertising LIMITED | Ireland | Dublin | Po Box 48 | Dublin | N/A | havas.***** | 1943 | $52,364,715 | 104 | N/A | N/A | 11471 |
| 9 | Poster Plan LIMITED | Ireland | Dublin | 31 Ballsbridge Terrace | Dublin | D04 XN34 | kineticww.***** | 1990 | $46,167,354 | 25 | N/A | N/A | 162790 |
| 10 | The Opus Group, Experiential Marketing, Ireland LIMITED | Ireland | Dublin | 41 Central Chambers | Dublin | N/A | N/A | 2022 | $46,148,933 | 108 | N/A | N/A | 731183 |
| 11 | Droga5 Ireland LIMITED | Ireland | Dublin | Haymarket House | Dublin | D07 CF98 | rothco.***** | 1995 | $37,349,472 | 137 | N/A | N/A | 236306 |
| 12 | Counter Products Marketing (ireland) LIMITED | Ireland | Dublin | Penthouse Suite | Dublin | D24 YY6K | N/A | 1985 | $34,727,192 | 546 | N/A | N/A | 116133 |
| 13 | The Firm Organisation LIMITED | Ireland | Dublin | Block A One George'S Quay Plaza | Dublin | N/A | N/A | 2009 | $28,087,856 | 52 | N/A | N/A | 467076 |
| 14 | B.R. Marketing LIMITED | Ireland | Clonee | Unit 9 Abbey House | Meath | D15 FXC3 | mcpmarketing.***** | 1983 | $26,401,129 | 55 | N/A | N/A | 95278 |
| 15 | Ccg Creative Communications Group LIMITED | Ireland | Dublin | 18-20 Northumberland Road | Dublin | D04 F782 | N/A | 1983 | $24,570,089 | 118 | N/A | N/A | 94970 |
| 16 | Smart Advertising Technology LIMITED | Ireland | Athlone | Rbk House | West Meath | N37XP52 | N/A | 2013 | $24,083,054 | 1 | N/A | N/A | 528134 |
| 17 | Verizon Ireland LIMITED | Ireland | Dublin | Head Office | Dublin | D03 R6C6 | N/A | 1994 | $23,305,361 | 53 | N/A | N/A | 224334 |
| 18 | Oqema Ireland LIMITED | Ireland | Sandyford | Office No. 115 Nesta Building, | Dublin | D18 A094 | N/A | 1997 | $23,192,084 | 9 | N/A | N/A | 277391 |
| 19 | Global Media & Entertainment (ireland) LIMITED | Ireland | Dublin | 86-88 Leeson Street Lower | Dublin | D02 A668 | N/A | 1995 | $21,194,610 | 49 | N/A | N/A | 229110 |
| 20 | Teneo Strategy Ireland LIMITED | Ireland | Dublin | 3rd Floor 20 on Hatch | Dublin | D02 XH02 | teneo.***** | 1982 | $20,775,783 | 97 | N/A | N/A | 92844 |
| 21 | Mcdonald's Marketing Company Of Ireland Company LIMITED By Guarantee | Ireland | Dublin | Cherrytree House | Dublin | N/A | N/A | 1991 | $20,674,234 | 1 | N/A | N/A | 179625 |
| 22 | Adara Media Unlimited Company | Ireland | Dublin | Fumbally Square | Dublin | D08 XYA5 | fcrmedia.***** | 2013 | $18,408,155 | 5 | N/A | N/A | 530033 |
| 23 | Brandwell (irl) LIMITED | Ireland | Dublin | 12 Northwest Business Park | Dublin | D15 V2YD | brandwellgroup.***** | 1984 | $16,631,748 | 109 | N/A | N/A | 104370 |
| 24 | Little Blue Links LIMITED | Ireland | Athlone | Rbk House | West Meath | N37XP52 | N/A | 2013 | $15,765,805 | 20 | N/A | N/A | 528133 |
| 25 | Wilson Hartnell Public Relations LIMITED | Ireland | Dublin | 5/6 Ely Place | Dublin | D02 E896 | accloanmanagement.***** | 1972 | $14,671,540 | 130 | N/A | N/A | 38401 |
| 26 | Gpa Global Merchandising LIMITED | Ireland | Kilcoole | Unit A8 | Wicklow | A63 AK37 | N/A | 2002 | $13,477,264 | 12 | N/A | N/A | 353331 |
| 27 | Quinn Mc Donnell Pattison LIMITED | Ireland | Dublin | Level 4 the Observatory | Dublin | D02 VC42 | publicis.***** | 1972 | $12,630,066 | 55 | N/A | N/A | 38857 |
| 28 | International Living Publishing LIMITED | Ireland | Portlaw | Woodlock House | Waterford | X91 K7HT | N/A | 1998 | $12,131,335 | 37 | N/A | N/A | 285214 |
| 29 | Omnicom Advertising Group Ireland LIMITED | Ireland | Dublin | 41a Blackberry Lane Dublin 6 | Dublin | D06A2H1 | cawleynea-tbwa.***** | 1992 | $11,124,198 | 59 | N/A | N/A | 184272 |
| 30 | Target Marketing LIMITED | Ireland | Dublin | 20 Northumberland Road | Dublin | D04 | targetmcconnells.***** | 1989 | $10,403,348 | 49 | N/A | N/A | 151065 |
| 31 | Jampp (ireland) LIMITED | Ireland | Dublin 24 | 6th Floor 2 Grand Canal Square | Dublin | N/A | N/A | 2015 | $9,705,788 | 86 | N/A | N/A | 555867 |
| 32 | Bauer Media Outdoor Ireland LIMITED | Ireland | Dublin 4 | Beech House | Dublin | D04 V5N2 | clearchannel.***** | 1975 | $8,672,178 | 24 | N/A | N/A | 50550 |
| 33 | Irish International Production LIMITED | Ireland | Dublin | 17 Gilford Road | Dublin | D04 RK29 | bbdo.***** | 1992 | $7,771,690 | 49 | N/A | N/A | 193432 |
| 34 | Tramway Investmemt Holdings LIMITED | Ireland | Dublin | 17 Gilford Road | Dublin | D04 RK29 | bbdo.***** | 1966 | $7,771,690 | 49 | N/A | N/A | 145570 |
| 35 | Kyne Communications LIMITED | Ireland | Dublin | 5th Floor | Dublin | D04 C2N4 | N/A | 2014 | $7,713,502 | 20 | N/A | N/A | 554452 |
| 36 | Sports Marketing Group Ventures LIMITED | Ireland | Dublin | 77 Camden Street Lower | Dublin | D02 XE80 | N/A | 2022 | $7,683,720 | 4 | N/A | N/A | 712762 |
| 37 | Apx Media LIMITED | Ireland | Dublin | Whitaker Court, Whitaker Square | Dublin | N/A | N/A | 1999 | $7,561,486 | 67 | N/A | N/A | 305427 |
| 38 | Maximum Media Network LIMITED | Ireland | Dublin | 5th Floor | Dublin | D02 C9D0 | maximummedia.***** | 2010 | $7,200,967 | 93 | N/A | N/A | 483460 |
| 39 | Nextroll LIMITED | Ireland | Dublin | Floor 3 Block 3 | Dublin | D02 Y754 | N/A | 2013 | $6,983,960 | 39 | N/A | N/A | 528013 |
| 40 | Webzone LIMITED | Ireland | Dublin | Independent House | Dublin | D01 X2E1 | carzone.***** | 1997 | $6,904,440 | 33 | N/A | N/A | 276836 |
| 41 | Cork Media Enterprises LIMITED | Ireland | Cork | Broadcasting House | Cork | T23 E183 | 96fm.***** | 1988 | $6,827,069 | 30 | N/A | N/A | 137313 |
| 42 | Greenmast LIMITED | Ireland | Bray | Atlas Court Ida Business Park | Wicklow | A98X5P5 | N/A | 2013 | $6,377,049 | 80 | N/A | N/A | 537378 |
| 43 | Priceline Booking (ireland) LIMITED | Ireland | Dublin | The Whythe Bldg | Dublin | D02 V9P0 | N/A | 2006 | $6,249,570 | 17 | N/A | N/A | 417690 |
| 44 | Cullen Broadcasting LIMITED | Ireland | Dublin 13 | Macken House | Dublin | D01 C9W8 | N/A | 2008 | $5,114,199 | 90 | N/A | N/A | 455546 |
| 45 | Maxus Communications LIMITED | Ireland | Dublin | 1 High Street | Dublin | D08 R990 | N/A | 2004 | $5,084,983 | 2 | N/A | N/A | 385766 |
| 46 | Javelin Advertising LIMITED | Ireland | Dublin | The Warehouse | Dublin | D07 T867 | javelin.***** | 1986 | $4,627,178 | 41 | N/A | N/A | 114318 |
| 47 | Mms Multi Euro Services Designated Activity Company | Ireland | Dublin | 1 Windmill Lane | Dublin | D02 F206 | N/A | 1971 | $4,461,626 | 50 | N/A | N/A | 34034 |
| 48 | Digital Odyssey LIMITED | Ireland | Dublin | Independent House | Dublin | D01 F9F3 | carsireland.***** | 2005 | $4,318,929 | 22 | N/A | N/A | 410097 |
| 49 | Treaty Radio LIMITED | Ireland | Limerick | Radio House | Limerick | V94 HF51 | live95fm.***** | 1997 | $4,033,085 | 46 | N/A | N/A | 262232 |
| 50 | Mediaedge:cia Ireland LIMITED | Ireland | Dublin | 1 High Street | Dublin | D08 R990 | groupm.***** | 1996 | $3,469,577 | 20 | N/A | N/A | 244932 |
| 51 | Yelp Ireland LIMITED | Ireland | Dublin | Level 1 Styne House | Dublin | D02 DY27 | N/A | 2010 | $3,214,516 | 20 | N/A | N/A | 484943 |
| 52 | Shawnee LIMITED | Ireland | Cork | Cork'S 96 Fm | Cork | T23 E183 | N/A | 1996 | $2,883,059 | 14 | N/A | N/A | 245757 |
| 53 | Seni Pr & Consulting Agentur LIMITED | Ireland | Dublin | Office 4, Apex Building Greenmount Industrial Estate | Dublin | D12 FY56 | N/A | 2019 | $2,569,529 | 10 | N/A | N/A | 654343 |
| 54 | Irish International Communications Group LIMITED | Ireland | Dublin | 17 Gilford Road | Dublin | D04 RK29 | irishinternational.***** | 1966 | $2,257,160 | 98 | N/A | N/A | 23626 |
| 55 | Oliver Marketing (ireland) LIMITED | Ireland | Dublin | Unit 2 Lee Road, Dublin Industrial Estate | Dublin | D11 | oliver-marketing.***** | 2011 | $2,257,160 | 71 | N/A | N/A | 500228 |
| 56 | Wolfgang Digital LIMITED | Ireland | Dublin | Palmerstown House | Dublin | N/A | wolfgangdigital.***** | 2010 | $2,257,160 | 69 | N/A | N/A | 484420 |
| 57 | Connelly Partners Integrated Europe LIMITED | Ireland | Dublin | Portview House | Dublin | D04 V9Y9 | N/A | 2017 | $2,257,160 | 26 | N/A | N/A | 612266 |
| 58 | Elevation Media LIMITED | Ireland | Dublin | Unit 2 | Dublin | D01 NF43 | N/A | 2008 | $2,257,160 | 20 | N/A | N/A | 459473 |
| 59 | Sino F.P. Investment LIMITED | Ireland | Drogheda | Beamore Business Centre | Louth | N/A | N/A | 2014 | $2,257,160 | 20 | N/A | N/A | 544356 |
| 60 | Convertizing LIMITED | Ireland | Sandyford | Apt 407 Cubes 1 | Dublin | N/A | N/A | 2020 | $2,257,160 | 20 | N/A | N/A | 667087 |
| 61 | Chamberlain Media LIMITED | Ireland | Dublin | One Park Place | Dublin | D02 E762 | N/A | 2020 | $2,257,160 | 20 | N/A | N/A | 675567 |
| 62 | Mediavest LIMITED | Ireland | Dublin | 1 Windmill Lane | Dublin | D02 F206 | N/A | 1999 | $2,257,160 | 20 | N/A | N/A | 299630 |
| 63 | Flynn & O'flaherty Construction Unlimited Company | Ireland | Dublin 4 | 21 Pembroke Road | Dublin | D04K225 | flynnoflaherty.***** | 2003 | $2,257,160 | 20 | N/A | N/A | 374799 |
| 64 | Independent Pictures LIMITED | Ireland | Dublin | 93 Baggot Street Lower | Dublin | D02 Y588 | agtel.***** | 1979 | $2,257,160 | 20 | N/A | N/A | 72328 |
| 65 | Funzoo LIMITED | Ireland | Kilkenny | Clone Kilmoganny | Kilkenny | R95 WV12 | N/A | 2002 | $2,257,160 | 20 | N/A | N/A | 362159 |
| 66 | David Allen Poster Sites LIMITED | Ireland | Dublin | 6 Burton Hall Park | Dublin | D18 A094 | jcdecaux.***** | 1971 | $2,257,160 | 20 | N/A | N/A | 36088 |
| 67 | Adtower LIMITED | Ireland | Dublin | Castleforbes House, Fl 2 | Dublin | D01 A8N0 | N/A | 2011 | $2,257,160 | 20 | N/A | N/A | 502418 |
| 68 | Bed Res Ireland LIMITED | Ireland | Dun Laoghaire | 5 Anglesea Bldg | Dublin | N/A | N/A | 2021 | $2,257,160 | 20 | N/A | N/A | 700684 |
| 69 | Addax Advertising LIMITED | Ireland | Dublin | 3-4 Pembroke Street | Dublin | D02 VN24 | N/A | 2008 | $2,257,160 | 20 | N/A | N/A | 460159 |
| 70 | Bravo Outdoor Advertising LIMITED | Ireland | Dublin | Unit B1 Calmount Business Park | Dublin | N/A | N/A | 2009 | $2,257,160 | 20 | N/A | N/A | 476759 |
| 71 | Marketing Network LIMITED | Ireland | Dublin | Argyle House | Dublin | N/A | N/A | 1985 | $2,257,160 | 20 | N/A | N/A | 111462 |
| 72 | Fvm Marketing LIMITED | Ireland | Dublin | 162 Shannon House | Dublin | D01 C568 | N/A | 2021 | $2,065,648 | 3 | N/A | N/A | 707394 |
| 73 | Marketing Institute Of Ireland Company LIMITED By Guarantee | Ireland | Dublin | Marketing House | Dublin | D18 Y0C9 | mii.***** | 1962 | $1,407,753 | 9 | N/A | N/A | 19888 |
| 74 | Digital Impact Marketing LIMITED | Ireland | Sandycove | The Mews Ballycrane | Cork | A96 YA48 | N/A | 2023 | $1,121,858 | 2 | N/A | N/A | 749337 |
| 75 | Populis Engage LIMITED | Ireland | Dublin | 54 Merrion Square South | Dublin | D02 | N/A | 2013 | $846,132 | 2 | N/A | N/A | 534516 |
| 76 | Eltum LIMITED | Ireland | Dublin | European Translation & Interpreting Services 55 O'Connell Street | Dublin | D01 W2V3 | N/A | 2022 | $639,264 | 2 | N/A | N/A | 729314 |
| 77 | Klaviyo Ireland LIMITED | Ireland | Dublin | 70 Sir John Rogerson'S Quay | Dublin | D02 R296 | N/A | 2024 | $451,432 | 567 | N/A | N/A | 772847 |
| 78 | Imagine Marketing Promotions LIMITED | Ireland | Dublin | The Hub Nashville Park | Dublin | D13 V0Y8 | N/A | 2005 | $451,432 | 170 | N/A | N/A | 402365 |
| 79 | Total Interactive Communications LIMITED | Ireland | Dublin | 64, Lower Leeson Street | Dublin | D02YY59 | N/A | 1979 | $451,432 | 115 | N/A | N/A | 71677 |
| 80 | Riverside Manufacturing Company (ireland) LIMITED | Ireland | Dundalk | Coes Road Ind Est | Louth | N/A | N/A | 1977 | $451,432 | 100 | N/A | N/A | 58921 |
| 81 | Core Full Solutions LIMITED | Ireland | Dublin | 1 Windmill Lane | Dublin | D02 F206 | onecore.***** | 2012 | $451,432 | 100 | N/A | N/A | 507996 |
| 82 | In The Company Of Huskies LIMITED | Ireland | Dublin | 4th Floor, Portview House | Dublin | D04 V9Y9 | inthecompanyofhuskies.***** | 1999 | $451,432 | 62 | N/A | N/A | 286818 |
| 83 | Prestige Signs LIMITED | Ireland | Dublin | Unit 123 Concorde Industrial Estate | Dublin | D12 YW10 | ipsltd.***** | 1970 | $451,432 | 47 | N/A | N/A | 30791 |
| 84 | Nk Communications LIMITED | Ireland | Dublin | 18e Main Street | Dublin | D14 KC79 | N/A | 2008 | $451,432 | 42 | N/A | N/A | 464985 |
| 85 | Atomic Advertising LIMITED | Ireland | Dublin | 15a Bishop Street | Dublin | D08 DK37 | atomic.***** | 1998 | $451,432 | 39 | N/A | N/A | 279207 |
| 86 | Goosebump LIMITED | Ireland | Dublin | 30/31 Francis Street | Dublin | N/A | N/A | 2007 | $451,432 | 35 | N/A | N/A | 445222 |
| 87 | Net Affinity LIMITED | Ireland | Dublin | 2nd Floor Block 4 Bracken Road | Dublin | D18 V0Y0 | netaffinity.***** | 2000 | $451,432 | 34 | N/A | N/A | 323392 |
| 88 | Royal County Products LIMITED | Ireland | Stamullen | Kilnew Mews | Meath | K32 AV91 | N/A | 2000 | $451,432 | 33 | N/A | N/A | 334133 |
| 89 | Poster Management Ireland LIMITED | Ireland | Dublin | Harmony Court | Dublin | D02 H270 | pml.***** | 2015 | $451,432 | 32 | N/A | N/A | 557976 |
| 90 | Aircraft Branding LIMITED | Ireland | Dublin 24 | 1 Grants Row | Dublin | D02HX96 | N/A | 2013 | $451,432 | 31 | N/A | N/A | 530690 |
| 91 | More O'ferrall Ireland LIMITED | Ireland | Dublin | Beech House, Beechill Road | Dublin | D04 V5N2 | N/A | 1986 | $451,432 | 30 | N/A | N/A | 118824 |
| 92 | Thinkhouse LIMITED | Ireland | Dublin | The Annex | Dublin | D08 AWH9 | thinkhousehq.***** | 2002 | $451,432 | 30 | N/A | N/A | 351798 |
| 93 | Daring Boys And Girls LIMITED | Ireland | Dublin | Bloomfield House | Dublin | D08 WT10 | boysandgirls.***** | 2009 | $451,432 | 28 | N/A | N/A | 473842 |
| 94 | Century Merchandising Services LIMITED | Ireland | Dublin | B2 Calmount Park | Dublin | D12 YR44 | cmsmarketing.***** | 1997 | $451,432 | 24 | N/A | N/A | 263391 |
| 95 | Myhome LIMITED | Ireland | Dublin | Irish Times Building | Dublin | D02 CX89 | myhome.***** | 2000 | $451,432 | 21 | N/A | N/A | 330920 |
| 96 | Algorand Foundation (ireland) LIMITED | Ireland | Dublin | C/o Tmf Group, Ground Floor Two Dockland Central | Dublin | D01 K2C5 | N/A | 2020 | $451,432 | 21 | N/A | N/A | 666411 |
| 97 | Empathy Marketing LIMITED | Ireland | Dublin | T/a Pigsback.com | Dublin | D12 P6W2 | pigsback.***** | 2000 | $451,432 | 20 | N/A | N/A | 320005 |
| 98 | Mediabrands LIMITED | Ireland | Dublin | Marsh House | Dublin | N/A | N/A | 1996 | $451,432 | 20 | N/A | N/A | 903791 |
| 99 | Balscadden Online LIMITED | Ireland | Dublin | Fitness Equipment Ireland | Dublin | D10 WC62 | N/A | 2013 | $451,432 | 19 | N/A | N/A | 526137 |
| 100 | Happy Marketing & Media LIMITED | Ireland | Galway | Unit 22, Galway Technology Centre | Galway | H91 X927 | N/A | 2015 | $451,432 | 18 | N/A | N/A | 567921 |