| Intive GmbH | |
| Intland Software | Baden-Württemberg |
| INTRA Photovoltaics Systemhaus GmbH | North Rhine-Westphalia |
| Intracon New Technologies GmbH | Baden-Württemberg |
| IntraNav GmbH | |
| Intranda GmbH | Lower Saxony |
| Intraproc GmbH | North Rhine-Westphalia |
| Intrexx GmbH | |
| Intriweb.com | Rhineland-Palatinate |
| Intron GmbH | Bavaria |
| IntuiDev IT-solutions | Hesse |
| Intuity Media Lab GmbH | |
| inuTech GmbH | Bavaria |
| Inveda.net GmbH | Saxony |
| Invent AG | North Rhine-Westphalia |
| Invent GmbH | |
| Inveox GmbH | |
| Invesdor INV AG | |
| Invest in Bavaria | |
| Invicol GmbH | |
| Invirt GmbH | |
| Invisible Toys | |
| InVision AG | North Rhine-Westphalia |
| Invitosoft Software Solutions oHG | |
| InVivo BioTech Services GmbH | |
| INVR.Space GmbH | |
| Inway Systems GmbH | Bavaria |
| inwendo GmbH | |
| Inworks GmbH | Baden-Württemberg |
| INWX GmbH & Co. KG | Berlin |
| Inxmail GmbH | Baden-Württemberg |
| INZMO Europe GmbH | Berlin |
| ioBroker GmbH | |
| IOK GmbH & Co. KG | North Rhine-Westphalia |
| iOMEDICO AG | |
| iOmx Therapeutics AG | |
| IONIQ Group GmbH | |
| IONITY GmbH | Bavaria |
| IONOS | |
| IONServices Dresden Prof. Dr. Thoralf Gebel | |
| IOS GmbH | North Rhine-Westphalia |
| IOSS intelligente optische Sensoren & Systeme GmbH | Baden-Württemberg |
| iOSXpert Ltd | Rhineland-Palatinate |
| IoT Analytics GmbH | |
| IoT Venture GmbH | |
| IOTA | Berlin |
| IOTIQ GmbH | |
| Iotis GmbH | |
| IP GmbH | Bavaria |
| IP&More GmbH | Bavaria |