| Business Angels Romania | Iași |
| Business Circle | |
| Business Club | |
| Business Information Systems (Allevo) S.R.L. | Bucharest |
| Businessdesign | Bucharest |
| BWise Solutions | Bucharest |
| ByteIgnite | |
| Bytenet Consulting S.R.L. | Bucharest |
| Bytes Route | Dolj |
| C&A Interserv S.R.L. | Bucharest |
| C-Soft S.r.l. | Harghita |
| Cabanova | Bucharest |
| CADian Romania | Bucharest |
| CADsoft Romania | |
| CADWARE Engineering | |
| Caelsoft Prod | |
| Camera de Comerț și Industrie a Municipiului București | |
| Camera de Comerț și Industrie a României | |
| Caphyon Ltd | Dolj |
| CaptainForm | Timiș |
| Carbon Incubator | Bucharest |
| Cardo+ | |
| Cartuse Imprimante | Bucharest |
| CaruselConsulting | |
| CashControlApp.com | Cluj |
| Catalyst Romania | Bucharest |
| CBNAgro.tech | |
| CDI Software Solutions S.R.L. | Bucharest |
| CEC Bank | Bucharest |
| Centrale IP | Bucharest |
| certSIGN | |
| CFO Network | |
| CG Hitech Solutions | |
| Chambre de Commerce Belgo-Luxembourgeoise Roumaine Moldave | |
| Changeneers | |
| CHS Grup | Bucharest |
| Cicada Technologies | Bucharest |
| CIEL | Bucharest |
| Cinor S.A. | Bucharest |
| Circuit Design S.R.L. | Bucharest |
| CISEO | |
| CIT Grup | Timiș |
| Civictech România | |
| Class IT Group | |
| Class IT Outsourcing | Bucharest |
| Claus Web S.R.L. | Satu Mare |
| CleanSofts.org | Bucharest |
| Cleanvoice AI | |
| Clever Capital | |
| Cleverage Venture Capital S.R.L. | |