| IRAS | IRAS |
| Iras galaxy | Galaxia IRAS |
| irascible | irascible |
| irate | furioso |
| IRATE radio | Radio iRATE |
| Irateness | Demencia |
| Irazú Volcano | Volcán Irazú |
| IRC flood | Flood |
| IRCAM | IRCAM |
| IRCd | IRCd |
| ire | ira |
| Ireland | Irlanda |
| Ireland in the Eurovision Song Contest | Irlanda en el Festival de la Canción de Eurovisión |
| Ireland national rugby union team | Selección de rugby de Irlanda |
| Irena Sendler | Irena Sendler |
| Irenaeus | Ireneo de Lyon |
| Irene | Irene |
| Irene Angelina | Irene |
| Irene Doukaina | Irene Ducas |
| Irene Dunne | Irene Dunne |
| Irene Papas | Irene Papas |
| Irgun | Irgún |
| Iria Flavia | Iria Flavia |
| iridescence | irisación |
| iridescent | iridiscente |
| Iridium | Iridio |
| Iridology | Iridología |
| Irina Hakamada | Irina Hakamada |
| Irina Privalova | Irina Privalova |
| Irina Tchachina | Irina Tchachina |
| Iriomote Cat | Prionailurus bengalensis iriomotensis |
| Iriondo Department | Departamento Iriondo |
| iris | iris |
| Iris Murdoch | Iris Murdoch |
| Iris oratoria | Iris |
| Iris pseudacorus | Iris pseudacorus |
| Iris versicolor | Iris versicolor |
| IRIS-T | BGT IRIS-T |
| Irish | irlandés |
| Irish American | Irlandés estadounidense |
| Irish breakfast | Desayuno irlandés |
| Irish Citizen Army | Ejército Ciudadano Irlandés |
| Irish Civil War | Guerra Civil Irlandesa |
| Irish coffee | café irlandés |
| Irish cuisine | Gastronomía de Irlanda |
| Irish Elk | Megaloceros giganteus |
| Irish euro coins | Monedas de euro de Irlanda |
| Irish Free State | Estado Libre Irlandés |
| Irish Gaelic | irlandés |
| Irish language | Idioma irlandés |
| Irish literature | Literatura de Irlanda |
| Irish moss | Chondrus crispus |
| Irish National Liberation Army | Ejército Irlandés de Liberación Nacional |
| Irish nationalism | Nacionalismo irlandés |
| Irish poetry | Poesía irlandesa |
| Irish pound | Libra irlandesa |
| Irish Premier League | Premier League Irlandés |
| Irish proverbs | Proverbios irlandeses |
| Irish rebel music | Música rebelde irlandesa |
| Irish Republic | República Irlandesa |
| Irish Republican Army | IRA |
| Irish round tower | Torre irlandesa |
| Irish Sea | Mar de Irlanda |
| Irish stew | Irish stew |
