| Name | Region |
|---|---|
| iTuna S.r.l. | |
| Itway S.p.A. | |
| Iubenda S.r.l. | |
| IusOnDemand S.r.l. | Milan |
| IUV S.r.l. | |
| IVM S.r.l. | |
| IVTech S.r.l. | |
| J2K Premium | Verona |
| j4energy | |
| Jagaad | |
| Jakala S.p.A. S.B. | |
| Java User Group Sardegna Onlus | Cagliari |
| JAW Software | Rome |
| Jcom Italia S.r.l. | Bari |
| JDK S.r.l. | Rome |
| Jepssen Store | Catania |
| Jet HR S.r.l. | |
| Jetware | Rome |
| Jobby S.r.l. | |
| Jobtech S.r.l. | |
| JockerSoft | Bergamo |
| Johix | |
| John Cabot University | Rome |
| Joinrs S.r.l. | |
| Joivy | |
| Joobz.it | South Tyrol |
| Joomeph Ltd | |
| Joomla.it | Rome |
| JOOMLART | Pisa |
| Joomlaskin | Rome |
| jsday | |
| JTech S.r.l. | Genoa |
| Julius Design | Turin |
| Jump Group | Forlì-Cesena |
| Junker | Bologna |
| Jusan Network S.r.l. | Turin |
| Justagency | Latina |
| Justbit | Rome |
| K-Sport World S.r.l. | |
| Kahle Automation S.r.l. | |
| Kairos Advice Company S.r.l. | |
| Kairos3D S.r.l. | |
| Kaleyra | |
| Kalliope S.r.l. | Palermo |
| Kampaay S.r.l. | |
| KARMA Communication | |
| Karma Studio | Treviso |
| Kasa della Comunicazione | Milan |
| Kaspersky Italia S.r.l. | Rome |
| Kayak adv |