| Indifferenz | indifference |
| indifferent | indifferent apathetic |
| Differenz | difference remainder |
| indizieren | index |
| different | different |
| Inferenz | inference |
| Interferenz | interference |
| Indianerin | American Indian Amerindian Indian native American |
| indexieren | index |
| induzieren | induce |
| vindizieren | claim vindicate |
| Typinferenz | type inference |
| inwiefern | in what way to what extent |
| Infigieren | infixation |
| infizieren | infect |
| inhibieren | inhibit |
| injizieren | inject |
| Indolenz | idleness |
| indigene | Aboriginal |
| indigofarben | indigo |