| Indexar | |
| Industrial Software | |
| Industrial Software Technologies | Bucharest |
| INED | Buzău |
| iNES Group | Bucharest |
| Inflection Point | Cluj |
| InfoCenter Craiova | Dolj |
| Infomediapro | Bucharest |
| Infoplus Service | Vâlcea |
| Infortec | Neamț |
| Infostar Grup | Iași |
| Inkark Trading S.R.L. | Cluj |
| Innobyte | |
| Innoship | |
| Innovation Labs | Bucharest |
| Innovative Software | Brașov |
| Innovative Web Services | Bucharest |
| InnovX Business Accelerator S.R.L. | |
| Inovalt | Prahova |
| Inovo | Bucharest |
| inSHAPE | |
| Inside Media Communication | Bucharest |
| INSOFTDEV Technology | |
| Instant Factoring | |
| Institute for Digital Government | Bucharest |
| Institutul BrainMap Neuroscience | |
| Institutul de Excelenta in Antreprenoriat | |
| Institutul de Informatică Teoretică Iaşi | |
| Institutul Naţional de Cercetare Dezvoltare pentru Tehnologii Izotopice şi Moleculare Cluj-Napoca | |
| Institutul Național de Cercetare – Dezvoltare în Informatică | Bucharest |
| Institutul Național de Cercetare-Dezvoltare pentru Optoelectronică | |
| Integrasoft S.R.L. | Mureș |
| Intelactsoft | Bucharest |
| Intelligent Design | Bucharest |
| IntelliVision Data | |
| Intend Computer | Cluj |
| Intergorj | Gorj |
| InterLAN | Bucharest |
| International InfoMATRIX Computer Project Competition | Bucharest |
| Internet Domreg S.R.L. | Bucharest |
| InternetCorp | |
| InterNEXT | Arad |
| Intesa Sanpaolo Bank | Bucharest |
| IntoVPS | Cluj |
| Intrarom | Bucharest |
| Inventeaza.ro | |
| InvestRomania | |
| Invox | Bucharest |
| IQ Digital | |
| iqinsider | |