| Intersoft Electronics N.V. | Antwerp |
| Interuniversitair Micro-Electronica Centrum | Flemish Brabant |
| Intigriti | |
| Intix | |
| IntoTheWeb | |
| Intris N.V. | Antwerp |
| Intys Partners | |
| Inventures Investment Partners S.A. | |
| Inveo Consulting | Brussels-Capital |
| Invest Europe | Brussels-Capital |
| InvestSuite | Flemish Brabant |
| IP Nexia | Flemish Brabant |
| IPCOS | |
| IPTE Factory Automation N.V. | Limburg |
| IRC Engineering N.V. | East Flanders |
| Iristick | |
| Irssi | Flemish Brabant |
| Isabel Group | |
| ISFSC | |
| ISIS | Liège |
| ISO-Computer | Namur |
| ISPA Belgium | Brussels-Capital |
| iSTAR Medical | |
| IT Consult Services | |
| IT Partner B.V.B.A. | |
| IT Pro N.V. | Antwerp |
| IT-Nerd Computer Solutions | Antwerp |
| IT1 | East Flanders |
| ITAF IT | East Flanders |
| iterates | |
| iText Group N.V. | East Flanders |
| ITLEY Conseils & Services | Brussels-Capital |
| IVA Machine Vision Systems | Flemish Brabant |
| Ivex | |
| Ixor | Antwerp |
| JAAN B.V. | Namur |
| Jakency | |
| Jalons | Walloon Brabant |
| Jamo Solutions | Flemish Brabant |
| Jaywalk S.P.R.L. | |
| JD Systems B.V.B.A. | West Flanders |
| Jef Vingerhoets Design | Antwerp |
| Job Partner | Brussels-Capital |
| Jobgether | |
| John's Computers | Liège |
| Joliet Service | Liège |
| Joomlatools | Brussels-Capital |
| Joppe W. Bos | |
| JTC Micro Electronics N.V. | Limburg |
| June | |