| Business Venture Partners | |
| Butler Technologies Ltd | |
| Buymie Technologies Ltd | Dublin City Council |
| Cables Online Shop | Cork City Council |
| Cactus | Dublin City Council |
| CaliberAI | |
| Callstats.io | |
| Camba.tv Ltd | |
| Cambrist Ltd | |
| CameraMatics | |
| Candidate Manager Ltd | Dublin City Council |
| CannDoIT | Cork County Council |
| Canon Ireland | South Dublin County Council |
| Cantec | Waterford City and County Council |
| Captec | |
| Cara Partners | |
| CarbonSpace Ltd | |
| Cargo Defenders | |
| Carr Communications Ltd | |
| Carrick Therapeutics Ltd | |
| CashAnalytics | |
| Cashbook | |
| Cashin Telecommunications Ltd | Dublin City Council |
| Catalyx | |
| Caveo Information Systems Ltd | |
| CCSI Ltd | Dún Laoghaire-Rathdown County Council |
| CD Analytics | |
| CDG Brand | Dublin City Council |
| CeADAR | |
| Cellusys | |
| Celtic Biotech Ltd | |
| Central Bank of Ireland | Dublin City Council |
| Central Internet Cafe | Dublin City Council |
| Centre for Software Engineering | Dublin City Council |
| Centrestage | Dublin City Council |
| Centron System Solutions | |
| Cetsoft | |
| Chanelle Pharma | |
| Channel Mechanics | |
| ChannelSight | |
| Chatspace AI | Galway City Council |
| CheckVentory Innovation Ltd | |
| Chillistore Technologies Ltd | |
| Chipright | Galway City Council |
| Chuffey Design Company | Cork City Council |
| CI Studio | |
| Circit Ltd | |
| CitySwift | |
| CiviQ | |
| CJ Cube Technologies Ltd | |