| iriser | irisieren |
| Irish Citizen Army | Irish Citizen Army |
| Irish Coffee | Irish Coffee |
| Irish National Liberation Army | Irish National Liberation Army |
| Irish Republican Brotherhood | Irische Republikanische Bruderschaft |
| Irish Rugby Football Union | Irish Rugby Football Union |
| Irish stew | Irish Stew |
| Irish Stock Exchange | Irish Stock Exchange |
| Irish Volunteers | Irish Volunteers |
| Irish wolfhound | Irischer Wolfshund |
| Irish-coffee | Irishcoffee |
| irisé | irisierend |
| IRiver | Iriver |
| Irix | IRIX |
| Irkoutsk | Irkutsk |
| Irlandais | Ire |
| Irlandais-e | Irisch |
| Irlandaise | Irin |
| Irlande | Irland |
| Irlande du Nord | Nordirland |
| Irlando-Américains | Irisch-Amerikaner |
| Irma | Irma |
| Irma Grese | Irma Grese |
| Irma la douce | Das Mädchen Irma la Douce |
| Irmgard | Irmgard |
| Irmin | Irmin |
| Irminsul | Irminsul |
| Irn-Bru | Irn-Bru |
| Irnerius | Irnerius von Bologna |
| Irnpression | Eindruck |
| Iron | Eisen |
| Iron Bridge | Ironbridge |
| Iron Butterfly | Iron Butterfly |
| Iron Maiden | Iron Maiden |
| Iron Man | Iron Man |
| Ironbridge | Ironbridge |
| ironie | Ironie |
| ironique | ironisch |
| ironiquement | ironisch |
| Ironman | Ironman |
| Ironton | Ironton |
| Iroquois | Irokese |
| iroquoise | irokesisch |
| irrachetable | nicht umwechselbar |
| irradiation | Bestrahlung |
| Irradiation de la nourriture | Lebensmittelbestrahlung |
| irradiation des aliments | Lebensmittelbestrahlung |
| irradier | ausstrahlen |
| irradier de bonheur | strahlen |
| irradier de joie | strahlen |
| irraisonné | töricht |
| Irrationalité de e | Beweis der Irrationalität der Eulerschen Zahl |
| irrationnel | absurd |
| Irrationnel quadratique | Quadratisch irrationale Zahl |
| Irrawaddy | Irrawaddy |
| Irrel | Irrel |
| irrelevant | belanglos |
| irremboursable | nicht umwechselbar |
