| Agile Networks Ltd | |
| AgriNet | |
| AI Tools Directory | |
| AID:Tech | Dublin City Council |
| AirSpeed Ltd | Dublin City Council |
| Akari Software | |
| Akita Ventures Ltd | |
| Alchemy Software Development Ltd | Dublin City Council |
| ALIA - Information Systems | Cork County Council |
| Alias Marketing and Design | |
| Alida Systems | Cork County Council |
| ALISON | Galway City Council |
| Alkermes | |
| Allcorrect Group | |
| Allegion plc | Dublin City Council |
| Allen Creative | |
| Almedia Design & Training | |
| Aloud | |
| Alpha Wireless Ltd | Laois County Council |
| Altada | Cork City Council |
| Alterapps | |
| Althera Laboratories Ltd | |
| Altion Ltd | Dublin City Council |
| AltraTech Ltd | |
| Always Amber | Kerry County Council |
| Amach | |
| Amartus Ltd | Dublin City Council |
| Ambisense | |
| AMCS | Limerick City and County Council |
| Ammeon Ltd | Dublin City Council |
| Amos | |
| AnaBio Technologies | |
| Analyze | |
| ANAM Technologies Ltd | Dublin City Council |
| andOpen | |
| Anjtek Ireland Ltd | |
| Anndan Media | |
| Annertech | |
| AnnualLeave | Dublin City Council |
| Antikytera | |
| Antuar | |
| Aonach Nua Ltd | |
| Aperture Web Design | Mayo County Council |
| Aphix Software | |
| ApisProject | Cork City Council |
| App Sandwich Ltd | |
| Appdrag Ltd | |
| Appify Digital | |
| Appify Ltd | Offaly County Council |
| Applied Intelligence Analytics Ltd | |