| ESB esb.ie | Utilities | Dublin, ๐ฎ๐ช Ireland | 6.0K | $1833.8M | - | $40.1M | 7% |
| Fonoa fonoa.com | Tech Services | Dublin, ๐ฎ๐ช Ireland | 5.7K | $1163.6M | - | - | 5% |
| Linesight linesight.com | Construction | Dublin, ๐ฎ๐ช Ireland | 2.4K | $970.3M | - | - | 23% |
| Vhi vhi.ie | Insurance | ๐ฎ๐ช Ireland | 2.0K | $601.8M | 488K/mo | - | 8% |
| Actavo actavo.com | Utilities | Dublin, ๐ฎ๐ช Ireland | 1.8K | $565.5M | - | - | 1% |
| GAA gaa.ie | Sports | ๐ฎ๐ช Ireland | 1.5K | $341.2M | 260K/mo | - | 4% |
| Sepam sepam.com | Construction | Clonmel, ๐ฎ๐ช Ireland | 1.5K | $617.9M | - | - | 8% |
| FEXCO fexco.com | Finance | Killorglin, ๐ฎ๐ช Ireland | 1.5K | $434.2M | - | - | 8% |
| Davy davy.ie | Finance | Dublin, ๐ฎ๐ช Ireland | 1.4K | $409.0M | - | - | 8% |
| ALONE alone.ie | NonProfit | Pleasants Street, ๐ฎ๐ช Ireland | 1.3K | $15.0M | - | - | 23% |
| Boylesports boylesports.com | Casinos | Dundalk, ๐ฎ๐ช Ireland | 1.3K | $35.0M | 2.5M/mo | - | 15% |
| Keelings keelings.com | Food | ๐ฎ๐ช Ireland | 1.2K | $449.8M | - | - | 9% |
| Revenue revenue.ie | Government | ๐ฎ๐ช Ireland | 1.1K | $75.0M | 1.9M/mo | - | 8% |
| Ergo ergogroup.ie | Tech Services | East Point Business Park, ๐ฎ๐ช Ireland | 1.0K | $211.5M | - | - | 11% |
| EirGrid eirgridgroup.com | Utilities | Ballsbridge, ๐ฎ๐ช Ireland | 1.0K | $315.1M | - | - | 21% |
| Enva enva.com | Environmental | Portlaoise, ๐ฎ๐ช Ireland | 1.0K | $294.3M | - | - | 18% |
| CSO cso.ie | Government | ๐ฎ๐ช Ireland | 983 | $75.0M | 109K/mo | - | - |
| Abtran abtran.com | Outsource | Mahon, ๐ฎ๐ช Ireland | 949 | $228.5M | - | - | -7% |
| Fenergo fenergo.com | Fintech | Dublin, ๐ฎ๐ช Ireland | 924 | $171.8M | - | $760.4M | 3% |
| AvaTrade avatrade.com | Finance | Dublin, ๐ฎ๐ช Ireland | 872 | $256.4M | 716K/mo | - | 6% |
| CityJet cityjet.com | Aviation | Swords, ๐ฎ๐ช Ireland | 814 | $280.3M | - | - | -2% |
| OSS osscompany.ie | Recruiting | Dublin, ๐ฎ๐ช Ireland | 761 | $127.8M | - | - | 20% |
| Arnotts arnotts.ie | Retail | Dublin, ๐ฎ๐ช Ireland | 745 | $236.8M | 675K/mo | - | 7% |
| Trรยณcaire trocaire.org | NonProfit | Maynooth, ๐ฎ๐ช Ireland | 725 | $15.0M | - | - | 12% |
| Energia energia.ie | Utilities | Navan Road, ๐ฎ๐ช Ireland | 710 | $218.7M | - | - | 6% |
| Chanelle chanellegroup.ie | Pharma | Loughrea, ๐ฎ๐ช Ireland | 678 | $136.3M | - | - | 14% |
| Forรยณige foroige.ie | Civil | ๐ฎ๐ช Ireland | 671 | $270.9M | - | - | 17% |
| KTL ktl.ie | Telecom | Naas, ๐ฎ๐ช Ireland | 657 | $266.9M | - | - | 15% |
| APC approcess.com | Pharma | ๐ฎ๐ช Ireland | 644 | $129.4M | - | - | 30% |
| Bimeda bimeda.com | Veterinary | Tallaght, ๐ฎ๐ช Ireland | 642 | $35.0M | - | - | 5% |
| Pobal pobal.ie | NonProfit | Dublin, ๐ฎ๐ช Ireland | 619 | $35.0M | - | - | 10% |
| Dish dish.ie | Entertainment | ๐ฎ๐ช Ireland | 599 | $153.5M | - | - | 2% |
| Ardmac ardmac.com | Construction | Swords, ๐ฎ๐ช Ireland | 562 | $203.7M | - | - | 6% |
| Roadstone roadstone.ie | Materials | ๐ฎ๐ช Ireland | 513 | $205.8M | - | - | - |
| nearForm nearform.com | Tech Services | Waterford, ๐ฎ๐ช Ireland | 495 | $89.7M | - | - | 56% |
| Coillte coillte.ie | Environmental | ๐ฎ๐ช Ireland | 490 | $128.6M | - | - | 6% |
| Ervia ervia.ie | Utilities | ๐ฎ๐ช Ireland | 490 | $134.8M | - | - | -8% |
| PrePayPower prepaypower.ie | Utilities | Dublin, ๐ฎ๐ช Ireland | 482 | $132.6M | 170K/mo | - | 12% |
| temple temple.ie | Networking | ๐ฎ๐ช Ireland | 464 | $174.0M | - | - | 31% |
| Viatel viatel.com | Tech Services | Dublin, ๐ฎ๐ช Ireland | 456 | $82.7M | - | - | 8% |
| IPSI ipsi.ie | Finance | ๐ฎ๐ช Ireland | 439 | $115.2M | - | - | -12% |
| CoreHR corehr.com | Tech Services | Ballincollig, ๐ฎ๐ช Ireland | 435 | $78.8M | 1.3M/mo | - | - |
| Healthcare21 healthcare21.eu | Hospital/Healthcare | Co. Cork, ๐ฎ๐ช Ireland | 426 | $143.8M | - | - | 9% |
| 123.ie 123.ie | Insurance | Sandyford Road, ๐ฎ๐ช Ireland | 425 | $116.9M | 180K/mo | - | 26% |
| Bulmers bulmers.ie | Food | ๐ฎ๐ช Ireland | 423 | $142.8M | - | - | - |
| SOLAS solas.ie | - | Dublin, ๐ฎ๐ช Ireland | 410 | $35.0M | - | - | - |
| Crosscare crosscare.ie | NonProfit | ๐ฎ๐ช Ireland | 406 | $15.0M | - | - | 7% |
| Meteor meteor.ie | Telecom | ๐ฎ๐ช Ireland | 394 | $160.1M | - | - | -12% |
| Sonica sonica.ie | Construction | Dublin, ๐ฎ๐ช Ireland | 392 | $142.1M | - | - | 19% |
| Orion j-fitzgerald.ie | Accounting | ๐ฎ๐ช Ireland | 388 | $79.1M | - | - | - |
| Medserv medserv.ie | Finance | Dundrum, ๐ฎ๐ช Ireland | 384 | $100.8M | - | - | 20% |
| Ding.com ding.com | Telecom | Ballsbridge, ๐ฎ๐ช Ireland | 375 | $152.3M | 853K/mo | - | 3% |
| PhoneWatch phonewatch.ie | Security | ๐ฎ๐ช Ireland | 358 | $77.9M | - | - | 5% |
| Spectrum.Life spectrum.life | Health | Dublin, ๐ฎ๐ช Ireland | 356 | $120.2M | - | - | 27% |
| Greenstar greenstar.ie | Environmental | Sandyford, ๐ฎ๐ช Ireland | 350 | $91.9M | - | - | 1% |
| Pharmasave pharmasave.ie | Pharma | ๐ฎ๐ช Ireland | 347 | $69.7M | - | - | -34% |
| CareWorks careworks.co.uk | Tech Services | Dublin, ๐ฎ๐ช Ireland | 340 | $61.6M | - | - | - |
| Roadbridge roadbridge.ie | Construction | ๐ฎ๐ช Ireland | 340 | $123.3M | - | - | -9% |
| Reiki reikicorkireland.com | Health | ๐ฎ๐ช Ireland | 339 | $114.4M | - | - | -3% |
| translation.ie translation.ie | Translation | Dublin, ๐ฎ๐ช Ireland | 335 | $15.0M | - | - | 18% |
| DDLETB stfinianscc.ie | Education | ๐ฎ๐ช Ireland | 316 | $71.1M | - | - | -1% |
| Boojum boojummex.com | Food | ๐ฎ๐ช Ireland | 299 | $88.8M | - | - | 35% |
| Serosep serosep.com | Biotech | Limerick, ๐ฎ๐ช Ireland | 289 | $44.8M | - | - | - |
| Demonware demonware.net | Gaming | Dublin, ๐ฎ๐ช Ireland | 289 | $64.2M | - | - | -1% |
| Fannin fannin.eu | Medical Equip | Dublin, ๐ฎ๐ช Ireland | 287 | $72.0M | - | - | 10% |
| Solicitor dugganandbarrysolicitors.ie | Legal | ๐ฎ๐ช Ireland | 286 | $84.9M | - | - | 3% |
| LearnUpon learnupon.com | EdTech | Dublin, ๐ฎ๐ช Ireland | 282 | $42.4M | 1.2M/mo | $56.7M | -15% |
| Gill gill.ie | Publishing | Dublin, ๐ฎ๐ช Ireland | 264 | $70.6M | - | - | 16% |
| Clancy clancy.ie | Construction | ๐ฎ๐ช Ireland | 262 | $83.6M | - | - | 30% |
| Beauchamps beauchamps.ie | Legal | Dublin, ๐ฎ๐ช Ireland | 262 | $77.8M | - | - | 7% |
| VistaMed vistamed.net | Medical Equip | Carrick on Shannon, ๐ฎ๐ช Ireland | 261 | $65.5M | - | - | -19% |
| Arkphire arkphire.com | Tech Services | Dublin, ๐ฎ๐ช Ireland | 260 | $41.5M | - | - | 8% |
| Sirus sirusinternational.com | Facilities | Cork, ๐ฎ๐ช Ireland | 259 | $68.1M | - | - | 13% |
| Xtratherm xtratherm.com | Materials | Navan, ๐ฎ๐ช Ireland | 257 | $90.7M | - | - | - |
| BSO bsonetwork.com | Telecom | ๐ฎ๐ช Ireland | 250 | $89.4M | - | - | -35% |
| Schivo schivomedical.com | Medical Equip | ๐ฎ๐ช Ireland | 248 | $62.2M | - | - | 11% |
| NeoDyne neodyne.ie | Industrial | Little Island, ๐ฎ๐ช Ireland | 239 | $92.8M | - | - | 31% |
| ComReg comreg.ie | Telecom | Dublin, ๐ฎ๐ช Ireland | 236 | $84.4M | - | - | 17% |
| Smarttech247 smarttech247.com | Analytics | Dublin, ๐ฎ๐ช Ireland | 230 | $35.4M | - | - | 30% |
| KWETB athycollege.ie | Education | ๐ฎ๐ช Ireland | 229 | $45.3M | - | - | 0% |
| AdaptiveMobile adaptivemobile.com | Telecom | Dublin, ๐ฎ๐ช Ireland | 228 | $81.5M | - | - | - |
| SIPTU siptu.ie | NonProfit | ๐ฎ๐ช Ireland | 227 | $15.0M | - | - | 5% |
| Prodieco prodieco.com | Engineering | ๐ฎ๐ช Ireland | 227 | $25.0M | - | - | -1% |
| SureSkills sureskills.com | Tech Services | Dublin, ๐ฎ๐ช Ireland | 226 | $36.0M | - | - | 20% |
| Brightwater brightwater.ie | Recruiting | Dublin, ๐ฎ๐ช Ireland | 222 | $29.3M | - | - | - |
| AutoEntry autoentry.com | FinTech | Dublin, ๐ฎ๐ช Ireland | 220 | $31.5M | - | - | 1% |
| CBE cbe.ie | Tech Services | Claremorris, ๐ฎ๐ช Ireland | 217 | $34.6M | - | - | 4% |
| Techrete techrete.com | Construction | Balbriggan, ๐ฎ๐ช Ireland | 213 | $67.9M | - | - | 5% |
| Flipdish flipdish.com | Delivery | Dublin, ๐ฎ๐ช Ireland | 212 | $40.4M | 246K/mo | $157.1M | -13% |
| Dairymaster dairymaster.com | Engineering | Tralee, ๐ฎ๐ช Ireland | 206 | $22.7M | - | - | 0% |
| OCS ocs.ie | Tech Services | Tullamore, ๐ฎ๐ช Ireland | 192 | $30.6M | - | - | - |
| MEIC meicltd.com | Construction | Loughrea, ๐ฎ๐ช Ireland | 191 | $60.9M | - | - | 5% |
| BeInCrypto beincrypto.com | Media | Dublin, ๐ฎ๐ช Ireland | 189 | $42.6M | 2.0M/mo | - | 4% |
| Certus certus.ie | Finance | Dublin, ๐ฎ๐ช Ireland | 186 | $43.0M | - | - | -5% |
| Asavie asavie.com | Tech Services | Dublin, ๐ฎ๐ช Ireland | 180 | $28.7M | - | - | - |
| CameraMatics cameramatics.com | Fintech | Dublin, ๐ฎ๐ช Ireland | 174 | $24.9M | - | - | 21% |
| Arriello arriello.com | Pharma | Dublin, ๐ฎ๐ช Ireland | 173 | $34.8M | - | - | 7% |
| LocalEyes localeyes.com | Translation | Cork, ๐ฎ๐ช Ireland | 173 | $7.5M | - | - | 3% |
| Glofox glofox.com | Tech Services | Dublin, ๐ฎ๐ช Ireland | 170 | $26.5M | 585K/mo | $22.8M | -23% |
| enet enet.ie | Telecom | Plassey, ๐ฎ๐ช Ireland | 166 | $59.3M | - | - | 2% |