| Bank of Ireland Group plc | Dublin City Council |
| Bankhawk | Dublin City Council |
| Banshee Apps | |
| BarooSoftware.com | |
| Barrcloud | |
| Basesite | |
| Battery Associates | |
| Baumeister Mediasoft Engineering | Dublin City Council |
| Baxter Technologies Ltd | |
| Beecher Networks Ltd | Cork City Council |
| BeFound SEO | |
| BeMoore Web Solutions Ltd | Cork City Council |
| Benetel Ltd | Dublin City Council |
| BH Consulting | |
| BHSL | |
| Big Bang Design Ltd | |
| Big Red Cloud Ltd | |
| Big Top Multimedia | South Dublin County Council |
| BigNet Design Ltd | Dublin City Council |
| Binarii Labs | |
| Binate Digtial | |
| Bio Pharma Technical Consulting | |
| BioProbe Diagnostics Ltd | |
| BioSimulytics | |
| Biostor Ireland Ltd | |
| Bizcom Ltd | Dublin City Council |
| Blacknight Internet Solutions Ltd | Carlow County Council |
| Blue Face Ltd | Dublin City Council |
| Bluebear Technologies | |
| bluebloc Digital Ltd | Dublin City Council |
| Bluedrop Medical | |
| BNRG Renewables Ltd | |
| Bold Studios | |
| BookingHawk.com | |
| Boundless Technologies Ltd | |
| Bowsy | |
| Boxworks | |
| Bradley: The Brand Agency | |
| BrainPatch.AI | |
| Brendan Moran | Dublin City Council |
| Bridge Web & Media | |
| Bright Light | Waterford City and County Council |
| Brightstar Software | Dublin City Council |
| BrightWind | |
| Broadband Speed Checker | Dublin City Council |
| Bronway Automation Ltd | Wicklow County Council |
| Brother International Corporation (Ireland) Ltd | Dublin City Council |
| BSO | |
| BT Ireland | Dublin City Council |
| Business in the Community Ireland | |