| irrestrito | absolutny |
| irreversibilidade dos fenómenos | nieodwracalność zjawiska |
| irrigação | nawadnianie |
| irritadiço | przewrotny |
| irritar | dokuczać |
| Irrlicht | Irrlicht |
| Irréversible | Nieodwracalne |
| Irschenberg | Irschenberg |
| Irtysh | Irtysz |
| Irvine | Irvine |
| Irvine Welsh | Irvine Welsh |
| Irving | Irving |
| Irving Berlin | Irving Berlin |
| Irving Langmuir | Irving Langmuir |
| Irwin Rose | Irwin Rose |
| Irwin Shaw | Irwin Shaw |
| Iráklio | Iraklion |
| Irã | Iran |
| Irã-Contras | Afera Iran-Contras |
| Irão | Iran |
| Irène Jacob | Irène Jacob |
| Irène Joliot-Curie | Irène Joliot-Curie |
| irídio | iryd |
| Is This It | Is This It |
| Isaac | Izaak |
| Isaac Albéniz | Isaac Albéniz |
| Isaac Asimov | Isaac Asimov |
| Isaac Babel | Izaak Babel |
| Isaac Bashevis Singer | Isaac Bashevis Singer |
| Isaac Hayes | Isaac Hayes |
| Isaac I Comneno | Izaak I Komnen |
| Isaac II Ângelo | Izaak II Angelos |
| Isaac Luria | Izaak Luria |
| Isaac Navón | Icchak Nawon |
| Isaac Newton | Isaac Newton |
| Isaac o Cego | Izaak Ślepy |
| Isabel | Elżbieta |
| Isabel Allende | Isabel Allende |
| Isabel da Rússia | Elżbieta Romanowa |
| Isabel de França | Izabela |
| Isabel de Hainaut | Izabella z Hainaut |
| Isabel de Orléans e Bragança | Izabella Orleańska-Bragança |
| Isabel de Portugal | Izabela Portugalska |
| Isabel de Valois | Elżbieta de Valois |
| Isabel de Wied | Elisabeth zu Wied |
| Isabel de York | Elżbieta York |
| Isabel do Brasil | Izabela Brazylijska |
| Isabel Farnésio | Elżbieta Farnese |
| Isabel I de Castela | Izabela I Katolicka |
| Isabel I de Inglaterra | Elżbieta I Tudor |
| Isabel II de Espanha | Izabela II Hiszpańska |
| Isabel II do Reino Unido | Elżbieta II Windsor |
| Isabel Tudor | Elżbieta Tudor |
| Isabel Woodville | Elżbieta Woodville |
| Isabella Augusta Gregory | Isabella Augusta Gregory |
| Isabella Rossellini | Isabella Rossellini |
| Isabelle Adjani | Isabelle Adjani |
| Isabelle Huppert | Isabelle Huppert |
| Isadora Duncan | Isadora Duncan |
| Isaiah Berlin | Isaiah Berlin |
| Isaias Afwerki | Isajas Afewerki |
| Isak Dinesen | Karen Blixen |
| Isambard Kingdom Brunel | Isambard Kingdom Brunel |
| Isaías | Izajasz |
| Isboset | Iszbaal |
| isca | przynęta |
| Ischia | Ischia |
| Isdes | Isdes |
| Iselin | Iselin |
| Isen | Isen |
| Isengard | Isengard |
| Iseo | Iseo |
| Iserlohn | Iserlohn |
| Isfahan | Isfahan |
| Ishikawa | Prefektura Ishikawa |
| Ishinomaki | Ishinomaki |
| Ishtar | Isztar |
| Ishøj | Gmina Ishøj |
| Isidor Isaac Rabi | Isidor Isaac Rabi |
| Isidora Dolores Ibárruri Gómez | Dolores Ibárruri Gómez |
| Isidoro | Izydor |
| Isidoro de Mileto | Izydor z Miletu |
| Isidoro de Sevilha | Izydor z Sewilli |
| Isil | Księżyc |
| Isildur | Isildur |
| Isitnefert | Isetnofret |
| isiZulu | zuluski |
| Isla de la Juventud | Isla de la Juventud |
| Isla de los Estados | Wyspa Stanów |
| Islam Karimov | Islom Karimov |
| Islamabad | Islamabad |
| Islame | islam |
| Island | Island |
| islandês | islandzki |
| Isles-Bardel | Les Isles-Bardel |
| Islândes | Islandczyk |
| Islândia | Islandia |
| Islã | islam |
| Islão | islam |
| Islão Sunita | Sunnici |
| Ismael | Izmael |
| Ismail Haniya | Ismail Hanija |
| Ismail Kadaré | Ismail Kadare |
| Ismail Omar Guelleh | Ismail Omar Guelleh |
| Ismaning | Ismaning |
| Isny | Isny im Allgäu |
| Isocianato | Izocyjaniany |
| Isoelectrónicos | Izoelektronowość |
| Isoglossa | Izoglosa |
| Isola del Giglio | Isola del Giglio |
| isolacionismo | izolacjonizm |
| isolamento | izolacja |
| isolamento acústico | izolacja dźwiękowa |
| Isolante elétrico | Izolator elektryczny |
| Isoleucina | Izoleucyna |
| Isomerase | Izomerazy |
| Isomeria nuclear | Izomery jądrowe |
| Isomerismo | Izomeria |
| Isometria | Izometria |
| Isone | Isone |
| Isopodos | Równonogi |
| isopor | styropian |
| Isopreno | Izopren |
| Isopyrum | Zdrojówka |
| Isorno | Isorno |
| Isoroku Yamamoto | Isoroku Yamamoto |
| Isospin | Izospin |
| Isostasia | Izostazja |
| Isotropia | Izotropia |
| Isparta | Isparta |
| Ispica | Ispica |
| Ispringen | Ispringen |
| isqueiro | zapalniczka |
| isquemia | niedokrwienie |
| Israel | Izrael |
| Israel ben Eliezer | Israel Baal Szem Tow |
| Israel Railways | Israel Railways |
| Israir | Israir |
| ISRSN | SNRI |
| ISS Pirs | Śluza powietrzna Pirs |
| ISS Quest | Śluza powietrzna Quest |
| ISS Truss | Integrated Truss Structure |
| ISS Zvezda | Zwiezda |
| Issacar | Issachar |
| Issenheim | Issenheim |
| isso | tamten |
| Issyk-Kul | Issyk-Kul |
| Istambul | Stambuł |
| Istanbul Park | Istanbul Autodrom Circuit |
| Istari | Istari |
| Istituto Nazionale di Statistica | Istituto Nazionale di Statistica |
| Istmo | Przesmyk |
| istmo das fauces | cieśń gardzieli |
| Istmo de Corinto | Przesmyk Koryncki |
| Istmo de Tehuantepec | Przesmyk Tehuantepec |
| Istmo do Panamá | Przesmyk Panamski |
| isto | ten |
| isto é | czyli |
| ISTP | ISTP |
| István Báthory | Stefan Batory |
| István Szabó | István Szabó |
| Isuzu | Isuzu |
| Isuzu MU Wizard | Opel Frontera |
| Isère | Isère |
| Isérables | Isérables |
| Isérnia | Isernia |
