| Isotono | Izoton |
| Isotropía | Izotropia |
| Isotónico | Izoton |
| ISP | ISP |
| Ispica | Ispica |
| Isquia | Ischia |
| Israel | Izrael |
| Israel Beitenu | Yisrael Beitenu |
| Israel ben Eliezer | Israel Baal Szem Tow |
| Israel Helphand | Aleksander Izrael Helphand |
| Israel invade la Franja de Gaza | Izrael atakuje strefę Gazy |
| Israel Tal | Israel Tal |
| Israir | Israir |
| Issaías Afewerki | Isajas Afewerki |
| ISSN | International Standard Serial Number |
| Issos | Issos |
| Issyk-Kul | Issyk-Kul |
| Istari | Istari |
| Isten áldd meg a magyart | Hymn Węgier |
| İstiklâl Marşı | Hymn Turcji |
| Istiophoridae | Żaglicowate |
| Istiophorus | Istiophorus |
| Istituto Nazionale di Statistica | Istituto Nazionale di Statistica |
| istmo | przesmyk |
| Istmo de Corinto | Przesmyk Koryncki |
| Istmo de Panamá | Przesmyk Panamski |
| Istmo de Tehuantepec | Przesmyk Tehuantepec |
| Istria | Istria |
| István Tisza | István Tisza |
| Isuzu | Isuzu |
| Iságoras | Isagoras |
| Isère | Isère |
| Isérables | Isérables |
| Isócrates | Izokrates |
| isómero | izomer |
| Isómero nuclear | Izomery jądrowe |
| Isótono | Izoton |
| isótopo | izotopy |
| Isótopo radiactivo | Izotop promieniotwórczy |
| Isótropo | Izotopy |
| Itabuna | Itabuna |
| Itachi Uchiha | Itachi Uchiha |
| itacismo | jotacyzm |
| Itala | Itala |
| Italdesign Giugiaro | Italdesign Giugiaro |
| Italia | Włochy |
| Italia fascista | Królestwo Włoch |
| italiana | Włoch |
| italiano | Włoch |
| Italo Balbo | Italo Balbo |
| Italo Calvino | Italo Calvino |
| Italo disco | Italo disco |
| Italo Svevo | Italo Svevo |
| Itamar Franco | Itamar Franco |
| Itami | Itami |
| ITAR-TASS | TASS |
| ITER | ITER |
| Iterador | Iterator |
| iterbio | iterb |
| Ithaca | Ithaca |
| Ithilien | Ithilien |
| itinerario | harmonogram |
| itrio | itr |
| itterbio | iterb |
| ITunes Store | ITunes Store |
| Itzamná | Itzamna |
| Itzcóatl | Itzcoatl |
| Itzhak Perlman | Itzhak Perlman |
| Itzpapálotl | Itzpapalotl |
| Itō Hirobumi | Itō Hirobumi |
| IUPAC | Międzynarodowa Unia Chemii Czystej i Stosowanej |
| Iuput II | Iuput II |
| Ius ad Bellum | Ius ad bellum |
| Ius cogens | Norma bezwzględnie obowiązująca |
| Ius sanguinis | Ius sanguinis |
| Iuspositivismo | Pozytywizm prawniczy |
| Iuticosaurus | Jutikozaur |
| IVA | VAT |
| Iva Majoli | Iva Majoli |
| Iva Zanicchi | Iva Zanicchi |
| Ivan Bagramian | Iwan Bagramian |
| Ivan Basso | Ivan Basso |
| Ivan Ergić | Ivan Ergić |
| Ivan Gašparovič | Ivan Gašparovič |
| Ivan I Crnojević | Ivan I Crnojević |
| Ivan Klasnić | Ivan Klasnić |
| Ivan Konstantinovitch Aivazovsky | Iwan Ajwazowski |
| Ivan Kostov | Iwan Kostow |
| Ivan Lendl | Ivan Lendl |
| Ivan Ljubičić | Ivan Ljubičić |
| Ivan Pavlov | Iwan Pawłow |
| Ivan Rakitić | Ivan Rakitić |
| Ivan René Valenciano | Iván Valenciano |
| Ivan Sokolov | Ivan Sokolov |
| Ivan Sutherland | Ivan Sutherland |
| Ivan Vazov | Iwan Wazow |
| Ivanhoe | Ivanhoe |
| Ivano Balić | Ivano Balić |
| Ivano-Frankivsk | Iwano-Frankiwsk |
| Ivanovo | Iwanowo |
| Ivar Aasen | Ivar Aasen |
| Ivar Giaever | Ivar Giaever |
| Ivica Dragutinović | Ivica Dragutinović |
| Ivo Andrić | Ivo Andrić |
| Ivo Karlović | Ivo Karlović |
| Ivo Pogorelich | Ivo Pogorelić |
| Ivo Sanader | Ivo Sanader |
| Ivrea | Ivrea |
| Ivry Gitlis | Ivry Gitlis |
| Ivy League | Liga Bluszczowa |
| Ivysaur | Ivysaur |
| Iván | Ivan |
| Iván Bilíbin | Iwan Bilibin |
| Iván Bunin | Iwan Bunin |
| Iván Campo Ramos | Iván Campo |
| Iván de la Peña | Iván de la Peña |
| Iván Drago | Ivan Drago |
| Iván Goncharov | Iwan Gonczarow |
| Iván I de Rusia | Iwan I Kalita |
| Iván III de Rusia | Iwan III Srogi |
| Iván Illich | Ivan Illich |
| Iván IV de Rusia | Iwan IV Groźny |
| Iván Kaviedes | Iván Kaviedes |
| Iván Konev | Iwan Koniew |
| Iván Morovic | Iván Morovic Fernández |
| Iván Pávlov | Iwan Pawłow |
| Iván Ramiro Córdoba | Iván Córdoba |
| Iván Stepánovich Mazeppa | Iwan Mazepa |
| Iván Turgenev | Iwan Turgieniew |
| Iván Turgénev | Iwan Turgieniew |
| Iván V de Rusia | Iwan V Romanow |
| Iván VI de Rusia | Iwan VI Romanow |
| Iván Zamorano | Iván Zamorano |
| Iwaki | Iwaki |
| Iwan | Ivan |
| Iwo Jima | Iō-jima |
| IWork | IWork |
| Ixelles | Elsene |
| Ixión | Iksjon |
| Ixtlilton | Ixtlilton |
| Iyad Allawi | Ijad Allawi |
| Iyar | Ijar |
| Izabal | Izabal |
| Izabella Scorupco | Izabella Scorupco |
| Izanagi | Izanagi |
| Izanami | Izanami |
| Izhevsk | Iżewsk |
| Iznogud | Iznogud |
| Izola | Izola |
| izquierda | lewy |
