| Name | Type | Country |
|---|---|---|
| Idea75 Srl | Enterprise | |
| Ideograma | Enterprise | |
| IK4 | Enterprise | Spain |
| IKOR Sistemas Electronicos | Enterprise | Spain |
| Ikusi | Enterprise | Spain |
| IMC information multimedia communication AG | Enterprise | Germany |
| INBISA servicios y medio ambiente S.A. | Enterprise | Spain |
| Indra sistemas | Enterprise | Spain |
| Indumetal Recycling | Enterprise | Spain |
| Inerza | Enterprise | Spain |