| Emineo d.o.o. | |
| Empiria Usluge d.o.o. | City of Zagreb |
| Enconet | |
| Enel Split d.o.o. | Split-Dalmatia |
| EnergoControl Zagreb | |
| Energy Institute Hrvoje Požar | |
| Enter d.o.o. | |
| Enterwell | |
| Epa d.o.o. | Međimurje |
| Epepe d.o.o. | |
| Ericsson Nikola Tesla d.d. | City of Zagreb |
| Erste Group Card Processor d.o.o. | City of Zagreb |
| Escape Digital Agency | |
| Etis d.o.o. | City of Zagreb |
| Etna d.o.o. | City of Zagreb |
| Etranet Grupa d.o.o. | |
| Ett d.o.o. | City of Zagreb |
| Euro-Tera d.o.o. | City of Zagreb |
| Eurocable Group d.d. | City of Zagreb |
| Eurocop d.o.o. | City of Zagreb |
| Europska Poslovna Škola | |
| Eurotrade d.o.o. | Istria |
| Exactum IT | |
| EXCEL Computers d.o.o. | City of Zagreb |
| Extreme Wireless | Varaždin |
| Faveo d.o.o. | City of Zagreb |
| Fenix Informatika | Osijek-Baranja |
| Fenix računala | City of Zagreb |
| Fer Projekt | |
| FF informatički inženjering d.o.o. | |
| FG Grafika d.o.o. | |
| FILOS d.o.o. | City of Zagreb |
| Finder d.o.o. | City of Zagreb |
| Firefly Studio d.o.o. | |
| FirePlay d.o.o. | City of Zagreb |
| FIVE | |
| Fortis Informatika d.o.o. | |
| Fortius Info d.o.o. | |
| Foton d.o.o. | Krapina-Zagorje |
| Fractal Design | Split-Dalmatia |
| From d.o.o. | City of Zagreb |
| Future Era Solutions | |
| Futuro Internet studio | Zadar |
| FWD | Istria |
| GALA construction software | Karlovac |
| GameMine | City of Zagreb |
| Garma d.o.o. | |
| Gaurus d.o.o. | |
| Gauss | |
| GeeK.hr | Šibenik-Knin |