| InfoAccess | Capital Region of Denmark |
| Infocall Communication System A/S | Region of Southern Denmark |
| Infrasoft | Central Denmark Region |
| Initiator Pharma A/S | |
| Ink-House.dk | Central Denmark Region |
| Inlead ApS | Capital Region of Denmark |
| Innomate A/S | Capital Region of Denmark |
| Innovationsfonden | |
| Innovative Business Software A/S | Capital Region of Denmark |
| Inpay A/S | |
| InProTher ApS | |
| Inrotech A/S | |
| Insai | |
| Inside Systems A/S | |
| Instrulog A/S | Capital Region of Denmark |
| Instruments A/S | Central Denmark Region |
| Instrumeter A/S | Capital Region of Denmark |
| Intec System ApS | |
| Intelligent Banker ApS | Region of Southern Denmark |
| Intelligent Systems A/S | |
| Intelligo Denmark ApS | |
| Intellix | Capital Region of Denmark |
| Interaction Design Foundation | |
| InterForm A/S | Capital Region of Denmark |
| interlace iT | North Jutland Region |
| Intern1 ApS | Central Denmark Region |
| Internet 123 | Region Zealand |
| Internet Zoo | |
| Internet4u.nu | Region Zealand |
| InternetService.AS | Region Zealand |
| Interresearch A/S | |
| IntraTeam | Central Denmark Region |
| IntraVision ApS | Capital Region of Denmark |
| Introdus | |
| Inventio.it A/S | Capital Region of Denmark |
| InventorSoft | Capital Region of Denmark |
| Inworks | Region of Southern Denmark |
| IO Biotech | Capital Region of Denmark |
| IO Biotech ApS | |
| IO-Interactive A/S | Capital Region of Denmark |
| IOLA | North Jutland Region |
| Ipvision A/S | Capital Region of Denmark |
| IPW Systems A/S | |
| Irriot | |
| ISD Immunotech | |
| ISIC A/S | Central Denmark Region |
| iSys | Capital Region of Denmark |
| IT - Fjernundervisning | Capital Region of Denmark |
| IT Business-Partner A/S | Region of Southern Denmark |
| IT Managers | Capital Region of Denmark |