| Inhibitor | inhibitor |
| Inhalator | inhaler |
| Inquisitor | inquisitor |
| Initiator | initiator |
| Indikator | indicator |
| Inkubator | incubator business incubator |
| Inhaber | proprietary owner |
| inhibieren | inhibit |
| Exhibition | exhibition |
| Debitor | debtor |
| Solicitor | solicitor |
| Visitor | visitor pattern |
| Animator | animator |
| Inspirator | inspirer |
| Imitator | imitator aper |
| Induktor | inductor |
| Inspektor | inspector |
| Investor | investor |
| Ionisator | ioniser ionizer |
| Inhaberin | proprietor |