| irascible | lättretlig |
| irasciblere | vrede |
| irate | vred |
| Irazú Volcano | Irazú |
| Irbit | Irbit |
| IRC bot | IRC-bot |
| IRC flood | Mark Ellis |
| IRCnet | IRCNet |
| Ireland | Irland |
| Ireland national rugby union team | Irlands herrlandslag i rugby union |
| Irena Sendler | Irena Sendlerowa |
| Irenaeus | Irenaeus |
| Irene | Irene |
| Irene Angelina | Irene |
| Irene Doukaina | Eirene Doukaina |
| Irene Dunne | Irene Dunne |
| Irenism | Irenik |
| Irgun | Irgun |
| iridescence | regnbågsskimmer |
| iridescent | iriserande |
| Iridescent shark | Hajmal |
| Iridium | Iridium |
| Iridology | Irisdiagnostik |
| Irina Björklund | Irina Björklund |
| Irina Slutskaya | Irina Slutskaja |
| Iringa Region | Iringa |
| Iriomote | Iriomote |
| Iriomote Cat | Prionailurus iriomotensis |
| iris | iris |
| Iris Murdoch | Iris Murdoch |
| Iris oratoria | Iris |
| IRIS-T | IRIS-T |
| Irish | irländska |
| Irish Civil War | Irländska inbördeskriget |
| Irish coffee | Irish coffee |
| Irish dance | Irish dance |
| Irish Draught | Irish draught |
| Irish Elk | Jättehjort |
| Irish euro coins | Irländska euromynt |
| Irish Free State | Irländska fristaten |
| Irish Gaelic | iriska |
| Irish Horse | Hunterhäst |
| Irish National Liberation Army | Irish National Liberation Army |
| Irish Premier League | FA Premier League |
| Irish proverbs | Irländska ordspråk |
| Irish Republican Army | IRA |
| Irish Sea | Irländska sjön |
| Irish vehicle registration plates | Registreringsskyltar i USA |
| Irish War of Independence | Irländska frihetskriget |
| Irishman | irländare |
| Irishwoman | irländska |
| Iriver | Iriver |
| IRIX | IRIX |
| Irizar | Irizar |
| irk | reta |
| irksome | tröttsam |
| Irkutsk | Irkutsk |
| Irkutsk Airport | Irkutsk |
| Irkutsk International Airport | Irkutsk |
| Irkutsk Oblast | Irkutsk oblast |
| Irma | Irma |
| Irma Grese | Irma Grese |
| Irminones | Herminoner |
| Irminsul | Irminsul |
| Irmo | Lórien |
| Irn-Bru | Irn-Bru |
| IRobot | IRobot |
| iron | pressa |
| Iron Age | järnålder |
| iron and steel industry | järn och stålindustri |
| Iron Butterfly | Iron Butterfly |
| Iron chloride | Järnklorid |
| iron clothes | stryka kläder |
| Iron County | Iron County |
| Iron Cross | Järnkorset |
| Iron Curtain | järnridå |
| Iron Guard | Järngardet |
| iron industry | järnindustri |
| Iron law of oligarchy | Oligarkins järnlag |
| Iron Maiden | Iron Maiden |
| Iron meteorite | Järnmeteorit |
| Iron pillar | Järnpelaren i Delhi |
| Iron pyrites | Pyrit |
| iron scrap | järnskrot |
| Iron Sky | Iron Sky |
| iron-gray | järngrå |
| Ironbridge | Ironbridge |
| Ironbridge Gorge | Ironbridge |
| ironclad | orubblig |
| Ironclad warship | Fickslagskepp |
| Ironforge | Ironforge |
| ironic | ironisk |
| ironical | ironisk |
| ironically | ironiskt |
| ironing | strykning |
| ironing board | strykbräda |
| ironing table | strykbräda |
| ironmonger | järnhandlare |
| ironstove | kamin |
| ironware | järnvaror |
| ironwork industry | gjuteriindutri |
| ironworks | stålverk |
| irony | ironi |
| Iroquoian languages | Irokesiska språk |
| Iroquois | Irokeser |
| irradiate | utstråla |
| irradiation | bestrålning |
| irrational | irrationell |
| Irrational number | Irrationellt tal |
| irrational root | irrationellt tal |
| Irrawaddy Dolphin | Irrawadidelfin |
| irreconcilable | oförenlig |
| irrecoverable | oindrivbar |
| irredeemable | oinlösbar |
| Irredentism | Irredentism |
| irreducible | oreducerbar |
| Irreducible complexity | Irreducibel komplexitet |
| irrefutable | ovedersäglig |
| irrefutably | obestridlig |
| irregular | onormal |
| irregularity | oregelbundenhet |
| irregularly | inkonsekvent |
| irrelevance | ovidkommande anmärkning |
