| Intensivstation | intensive care unit |
| Intensivtäter | repeat offender |
| Intensität | intensity intenseness |
| Interpretation | interpretation |
| Infestation | infestation |
| Internistin | internist |
| Interpellation | interpellation |
| Integration | integration |
| Intension | tenseness |
| Intention | intention |
| Interpolation | interpolation |
| Intervention | intervention |
| Inthronisation | enthronement |
| Intonation | intonation |
| Intoxikation | intoxication |
| intensivieren | intensify |
| Insinuation | insinuation |
| Endstation | terminus end of the line |
| Messstation | gaging station measurement station |
| Binnenmigration | internal migration |