| Akari Software | |
| Akita | |
| 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 |
| Allied Irish Banks plc | Dublin City Council |
| Alpha Wireless Ltd | Laois County Council |
| Altada | Cork City Council |
| Alterapps | |
| Alternative Times | Clare County Council |
| Altion Ltd | Dublin City Council |
| AltraTech Ltd | |
| Always Amber | Kerry County Council |
| Amach Software Ltd | |
| Amach Software Ltd | |
| Amartus Ltd | Dublin City Council |
| Ambisense | |
| AMCS | Limerick City and County Council |
| Ammeon Ltd | Dublin City Council |
| Amos | |
| AnaBio Technologies | |
| ANAM Technologies Ltd | Dublin City Council |
| andOpen | |
| Anjtek Ireland Ltd | |
| Annertech | |
| AnnualLeave | Dublin City Council |
| Antikytera | |
| Antuar | |
| Aperture Web Design | Mayo County Council |
| Aphix Software | |
| ApisProject | Cork City Council |
| App Design | |
| App Sandwich Ltd | |
| Appdrag Ltd | |
| Appify Ltd | Offaly County Council |
| Applied Intelligence Analytics Ltd | |
| Approach People Recruitment | |
| Appuchino | |
| Apridata | |
| Aptiv | Dublin City Council |
| Aquavarra Research Ltd | Dún Laoghaire-Rathdown County Council |
| Aquila Technology | Galway City Council |
| Aran Biomedical | |
| Archimedia Studios Ltd | Fingal County Council |
| Arekibo | Dublin City Council |