| Gambit trade d.o.o. | Central Slovenia |
| GEA College | |
| Gigaspark | Central Slovenia |
| Globtel d.o.o. | Central Slovenia |
| GoClick.si | |
| GORO | |
| Gospodarska zbornica Slovenije | Central Slovenia |
| GrabIT d.o.o. | |
| Grad, računalniški programi in inženiring d.d. | Central Slovenia |
| GreenMesh | |
| Hamster Design | Central Slovenia |
| Harmonia.si | |
| Hekovnik | |
| Hermes d.o.o. | Central Slovenia |
| Hesk.com | Southeast Slovenia |
| Hitrost.com | Upper Carniola |
| Hostko d.o.o. | |
| HYB d.o.o. | Central Slovenia |
| IDConference | |
| IEDC Bled School of Management | |
| Imaging Systems, Inc. | Central Slovenia |
| In the Loop | |
| Inden d.o.o. | |
| Indigo Labs | |
| Inetis Ltd | Savinja |
| Infonova d.o.o. | Central Slovenia |
| Informa Studio | Central Slovenia |
| Informatica | Central Slovenia |
| Informatika d.o.o. | |
| Informatika Mihelac | Central Slovenia |
| Information Commissioner of the Republic of Slovenia | Central Slovenia |
| Infotech d.o.o. | Central Slovenia |
| INISIS | |
| Innova IT | |
| Insta|text | |
| Institut "Jožef Stefan" | Central Slovenia |
| Inštitut in akademija za multimedije Ljubljana | |
| Inštitut za ekonomska raziskovanja | |
| Inštitut za kovinske materiale in tehnologije | |
| Inštitut za matematiko, fiziko in mehaniko | Central Slovenia |
| Institut za narodnostna vprašanja | |
| Intelicom d.o.o. | Central Slovenia |
| INTERA d.o.o. | Drava |
| Intrade d.o.o. | Central Slovenia |
| Invented4 | |
| Ionex d.o.o. | |
| IPIS | Upper Carniola |
| IPteh d.o.o. | |
| IRAS Sežana d.o.o. | |
| iRedMail d.o.o. | |