| Netmetrix | Madrid |
| Netquest | Barcelona |
| NetRivals | Barcelona |
| Netspace | A Coruña |
| Network World Espana | Madrid |
| Networks Test, S.L. | Madrid |
| Netzo | Madrid |
| Neuraptic AI | Madrid |
| Neuraxpharm | Barcelona |
| Neuro Ventures | Barcelona |
| neuroATLANTIC | A Coruña |
| Neuroelectrics | Barcelona |
| Neuroelectrics | Barcelona |
| Neurofix Pharma | Salamanca |
| Neuron Biopharma | Granada |
| Neuron Soluciones | Granada |
| Neurored, S.A. | Madrid |
| NevTrace | Madrid |
| New Crown | Madrid |
| New High Technologies of Norwick, S.L. | Biscay |
| New Life Solutions, S.L. | Madrid |
| New Rec-Line, S.L. | Murcia |
| NewData Real Time, S.L. | Madrid |
| Newe | Sevilla |
| newFasant, S.L. | Guadalajara |
| Newgen | Barcelona |
| Nexes-Viver d'Empreses i Centre de Negocis de Forallac | |
| Nexica Econocom Barcelona | Barcelona |
| Nexiona | Barcelona |
| Nexo Virtual | Jaén |
| Nextail Labs, S.L.U. | Madrid |
| NexTReT | Barcelona |
| NextWeb | Barcelona |
| Niikiis | Barcelona |
| Nina Capital | Barcelona |
| Nitium | Barcelona |
| Nivel IV Servicios Informáticos Gallegos, S.L. | Pontevedra |
| Nivoria Solutions, S.L. | Barcelona |
| NMI Electronics, S.L. | Barcelona |
| NO2 Web and Mobile Applications, S.L. | |
| Noaris | Madrid |
| Nodens | La Rioja |
| Nommac Proyectos, S.L. | Madrid |
| NoraiStudio | Balearic Islands |
| Noray | Las Palmas |
| Noray Bioinformatics, S.L.U. | Biscay |
| Noray Bioinformatics, S.L.U. | Biscay |
| North of the Web, S.L. | Málaga |
| Nostoc Biotech | Almería |
| Notarnet, S.L. | Murcia |