| Fideikommiss | trust |
| Fideismus | fideism |
| freikommen | walk |
| Fideist | fideist |
| Freikorps | free corps |
| Polizeikommissar | superintendent supt. |
| Fixkomma | fixed point |
| Seekompass | compass |
| wiederkommen | call back |
| Federweiß | French chalk |
| Filmriss | blackout |
| Fidibus | spill |
| Idealist | visionary idealist |
| Ideologin | ideologue |
| Epidermis | epidermis |
| Idealismus | idealism |
| Ideologie | ideology |
| Iridektomie | iridectomy |
| Videoclip | music video |
| Videokamera | video camera |