| Faircado | Berlin |
| Faircado UG (Haftungsbeschränkt) | Berlin |
| FAIRNETZT Systemhaus GmbH | |
| Fairrank GmbH | North Rhine-Westphalia |
| Fairventures Social Forestry GmbH | |
| Fairway Communication GmbH | |
| Fairy IT | |
| Fakir Technology Consultants GmbH | |
| FAKT Software GmbH | Saxony |
| Faktor e Multimedia GmbH | North Rhine-Westphalia |
| Fakus Elektronik GmbH | Baden-Württemberg |
| Falkenservice Security e.K. | |
| Falko Timme | Lower Saxony |
| Famobi GmbH | North Rhine-Westphalia |
| Fanpage Karma | Berlin |
| Farbeplus | Hesse |
| Farbtoner.com GmbH | Lower Saxony |
| Farco-Pharma GmbH | |
| FarmInsect GmbH | |
| Farmpartner-Tec GmbH | Baden-Württemberg |
| Faromedia | |
| Faserinstitut Bremen e.V. | |
| Fashion Cloud | Hamburg |
| FAST ComTec Communication Technology GmbH | Bavaria |
| FAST Internet Factory | Thuringia |
| Fast Lane | Bavaria |
| Fast-detect GmbH | Bavaria |
| FastBill GmbH | |
| FASTEC GmbH | North Rhine-Westphalia |
| FASTGenomics | |
| Fastic GmbH | |
| Fastline GmbH | Lower Saxony |
| FastViewer | Bavaria |
| Fatherboard Computer GmbH | North Rhine-Westphalia |
| FATMAP | |
| Fauser Elektrotechnik | Bavaria |
| Faust Information GmbH | |
| Favicon Generator | North Rhine-Westphalia |
| Faxtomail | Hesse |
| FCI FundersClub GmbH | Hamburg |
| FCS Consulting GmbH | |
| FD - Design | Hamburg |
| FEAS GmbH | Schleswig-Holstein |
| Feaser | North Rhine-Westphalia |
| FeatherFlow | |
| Fecher GmbH | Hesse |
| Feig Electronic GmbH | Hesse |
| Feinmetall GmbH | |
| feinschliff MEDIENGESTALTUNG | Berlin |
| FELA Leiterplattentechnik GmbH | Baden-Württemberg |