| Gestión de Ideas . Com | Murcia |
| Gestion de Sistemas Globales de Telecomunicaciones AMUNDO, S.A. | Santa Cruz de Tenerife |
| Gestion Integral de Redes y Aplicaciones Informaticas, S.A. | Madrid |
| Gestión Integral Online, S.L. | Alicante |
| Get-App | La Rioja |
| GetApp | Barcelona |
| GEUP.net | Santa Cruz de Tenerife |
| Géxtion 2002 | Asturias |
| GEYCE AGP Software | Barcelona |
| GhoFi | Girona |
| GiD Simulation | Barcelona |
| GIGAS | Madrid |
| Gilsys | Barcelona |
| Ginsa Informática, S.A. | Valencia |
| Gispert, General de Informática y Control, S.L. | Murcia |
| Global Dominion Access, S.A. | Biscay |
| Global Energy Services Siemsa, S.A. | Biscay |
| Global Graphic Machines | Madrid |
| Global SEO | Barcelona |
| Global3.es | Madrid |
| Globales | Segovia |
| GlobalMultimedia Internet, S.L. | Salamanca |
| GlobalStudio | Madrid |
| Gloria - Life Science Transformation, S.L. | Barcelona |
| Glue.digital | Pontevedra |
| GMAO Cloud, S.L. | Valencia |
| GMV Innovating Solutions, S.L. | |
| GNA Serveis Telemàtics, S.L. | Girona |
| GND Informática, S.L. | Barcelona |
| GNE Finance | Barcelona |
| Go2Jump | Barcelona |
| Góbalo | Madrid |
| GoBeCloud, S.L. | Madrid |
| GoHub Ventures | Valencia |
| Goin | Barcelona |
| GOING | |
| GoKoan | Valencia |
| Golden Soft | Madrid |
| Golova | |
| Goltratec | Alicante |
| Gomad Agency | |
| González y Aneas Informática, S.L.U. | |
| Goo Apps, S.L. | |
| Gopick | Madrid |
| Gorilla Arm | |
| Gotor Comunicaciones, S.A. | Zaragoza |
| Govertis | Valencia |
| Goyba Comunicaciones | Madrid |
| GP Pharm | Barcelona |
| GP Pharm, S.A. | |