| Name | Type | Country |
|---|---|---|
| Ibarreta 2000 | Enterprise | Spain |
| IDEKO-IK4 | Enterprise | Spain |
| Ikerlan IK4 | Enterprise | Spain |
| Ikor Metering | Enterprise | Spain |
| Ikor Sistemas Electrónicos | Enterprise | Spain |
| Ikor Technology Centre | Enterprise | Spain |
| Ikusi | Enterprise | Spain |
| INFILI TECHNOLOGIES | Enterprise | |
| INGARTEK | Enterprise | |
| IngenierÃa de Microsistemas Programados S.L. | Enterprise | Spain |