| Hybrid Technology Partners | |
| I.T. Alliance Group | Dublin City Council |
| IACT | Dublin City Council |
| IBAT College Dubilin | |
| Ibec | Dublin City Council |
| iCabbi | |
| ICCM Hosting | Wexford County Council |
| ICDL Europe | Dún Laoghaire-Rathdown County Council |
| ICON plc | |
| iCONX | South Dublin County Council |
| ID-Pal | |
| Ideabubble | Limerick City and County Council |
| Idiro Technologies | Dublin City Council |
| IE Domain Registry Ltd | Dún Laoghaire-Rathdown County Council |
| ieComputerSystems Ltd | Dublin City Council |
| ieinternet | Dún Laoghaire-Rathdown County Council |
| Ilikecake Ltd | South Dublin County Council |
| Imedia Interactive | Limerick City and County Council |
| Immedis | |
| Immersive Technologies Skillnet | |
| Impedans Ltd | |
| Independent Colleges Ltd. | |
| INET Computer Solutions Ltd | |
| Infinite Touch | |
| Infinity IT Ltd | Dún Laoghaire-Rathdown County Council |
| Inflection Biosciences | |
| Inflight Dublin | Dublin City Council |
| Info-Maker | Dublin City Council |
| Information Prodiders Ltd | |
| Inhousetrainning | Dublin City Council |
| Inish Technology Ventures Ltd | Dublin City Council |
| Initiate Digital Ltd | |
| Ink & Toner Solutions Ltd | Cork City Council |
| Ink Cartriges Ireland | Dublin City Council |
| Ink Refill Depot | Limerick City and County Council |
| Inkjet.ie | Monaghan County Council |
| InnaLabs Ltd | |
| Innovation Value Institute | |
| Inova Pharma & Life Science | |
| Insight Consultants | |
| Insight HR | |
| Insight Multimedia | Cork City Council |
| Inspiration | Dún Laoghaire-Rathdown County Council |
| Instillo Ltd | |
| Institute of Technology Blanchardstown | Fingal County Council |
| Institute of Technology Carlow | Carlow County Council |
| Institute of Technology Sligo | Sligo County Council |
| Institute of Technology Tallaght | South Dublin County Council |
| Institute of Technology Tralee | Kerry County Council |
| Intact Software | Louth County Council |