| Irréversible | Nieodwracalne |
| Irschenberg | Irschenberg |
| Irsee | Irsee |
| Irshava | Irszawa |
| Irtysh | Irtysz |
| Irtysh River | Irtysz |
| Irun | Irun |
| Irvine | Irvine |
| Irvine Welsh | Irvine Welsh |
| Irving | Irving |
| Irving Berlin | Irving Berlin |
| Irving Langmuir | Irving Langmuir |
| Irving Stone | Irving Stone |
| Irwin Rose | Irwin Rose |
| Irwin Shaw | Irwin Shaw |
| Iryna Lishchynska | Irina Liszczynska |
| Iryna Yatchenko | Irina Jatczenko |
| Irène Jacob | Irène Jacob |
| Irène Joliot-Curie | Irène Joliot-Curie |
| IS | IS |
| is that so | rzeczywiście |
| Is This It | Is This It |
| IS-IS | IS-IS |
| Isaac | Izaak |
| Isaac Albéniz | Isaac Albéniz |
| Isaac Asimov | Isaac Asimov |
| Isaac Babel | Izaak Babel |
| Isaac Bashevis Singer | Isaac Bashevis Singer |
| Isaac Boleslavsky | Izaak Bolesławski |
| Isaac Deutscher | Izaak Deutscher |
| Isaac Hayes | Isaac Hayes |
| Isaac I Komnenos | Izaak I Komnen |
| Isaac II Angelos | Izaak II Angelos |
| Isaac Kleiner | Isaac Kleiner |
| Isaac Komnenos | Izaak Komnenos |
| Isaac Komnenos of Cyprus | Izaak Komnenos |
| Isaac Leib Peretz | Icchok Lejb Perec |
| Isaac Levitan | Izaak Lewitan |
| Isaac Luria | Izaak Luria |
| Isaac Newton | Isaac Newton |
| Isaac Okoronkwo | Isaac Okoronkwo |
| Isaac the Blind | Izaak Ślepy |
| Isaac van Hoornbeek | Isaac van Hoornbeek |
| Isaach De Bankolé | Isaach De Bankolé |
| Isaak Dunayevsky | Izaak Osipowicz Dunajewski |
| Isabeau of Bavaria | Izabela Bawarska |
| Isabel | Isabel |
| Isabel Allende | Isabel Allende |
| Isabel Allende Bussi | Isabel Allende |
| Isabel Martínez de Perón | Isabel Perón |
| Isabel of France | Izabela |
| Isabel of Gloucester | Avisa z Gloucester |
| Isabel of Portugal | Izabela Portugalska |
| Isabel Province | Prowincja Isabel |
| Isabella | Izabela |
| Isabella Colbran | Isabella Colbran |
| Isabella II of Spain | Izabela II Hiszpańska |
| Isabella Jagiełło | Izabela Jagiellonka |
| Isabella Maria of Parma | Izabela Maria Burbon-Parmeńska |
| Isabella of Antioch | Izabela z Lusignan |
| Isabella of Aragon | Izabela Aragońska |
| Isabella of Castile | Izabela I Katolicka |
| Isabella of England | Izabela Plantagenet |
| Isabella of France | Izabela |
| Isabella of Jerusalem | Izabela Jerozolimska |
| Isabella of Naples | Izabela Aragońska |
| Isabella of Portugal | Izabela Portugalska |
| Isabella of Valois | Izabela de Valois |
| Isabella Rossellini | Isabella Rossellini |
| Isabelle | Dzwon |
| Isabelle Adjani | Isabelle Adjani |
| Isabelle Huppert | Isabelle Huppert |
| Isabelle of Burgundy | Izabela Burgundzka |
| Isabelle of Hainaut | Izabella z Hainaut |
| Isabelle theorem prover | Izabela |
| Isabelline Gothic | Styl izabeliński |
| Isabelline Shrike | Dzierzba pustynna |
| Isadora Duncan | Isadora Duncan |
| Isadore Singer | Isadore Singer |
| Isaeus | Izajos |
| Isagoras | Isagoras |
| Isah Eliakwu | Isah Eliakwu |
| Isaiah | Izajasz |
| Isaiah Berlin | Isaiah Berlin |
| Isaiah Osbourne | Isiah Osbourne |
| Isaias Afewerki | Isajas Afewerki |
| Isambard Kingdom Brunel | Isambard Kingdom Brunel |
| Isangel | Isangel |
| Isanosaurus | Isanozaur |
| Isar | Izara |
| Isaz | Isa |
| Ischaemic heart disease | Choroba niedokrwienna serca |
| ischemia | niedokrwienie |
| Ischia | Ischia |
| Ischtar Gate | Brama Isztar |
| ISCSI | ISCSI |
| Ise Bay | Zatoka Ise |
| Ise Shrine | Świątynia w Ise |
| Isen | Isena |
| Isengard | Isengard |
| Isenthalpic process | Przemiana izentalpowa |
| Isentropic process | Przemiana izentropowa |
| Iseo | Iseo |
| Iserlohn | Iserlohn |
| Isernia | Isernia |
| Isetnofret | Isetnofret |
| Isetta | BMW Isetta |
| Isfahan | Isfahan |
| Isfahan Province | Isfahan |
| Isfara | Isfara |
| ISFET | ISFET |
| Ish-bosheth | Iszbaal |
| Ishenbai Kadyrbekov | Iszegnbaj Kadyrbekow |
| Ishihara color test | Tablice Ishihary |
| Ishikawa | Prefektura Ishikawa |
| Ishikawa diagram | Diagram Ishikawy |
| Ishikawa Prefecture | Prefektura Ishikawa |
| Ishim | Iszym |
| Ishim River | Iszym |
| Ishimbay | Iszymbaj |
| Ishirō Honda | Ishirō Honda |
| Ishmael | Izmael |
| Ishpuinis of Urartu | Ispini |
| Ishtar | Isztar |
| Ishtar Gate | Brama Isztar |
| Ishvara | Iśwara |
| Ishøj | Gmina Ishøj |
| Isidor Gunsberg | Isidor Gunsberg |
| Isidor Isaac Rabi | Isidor Isaac Rabi |
| Isidore | Izydor |
| Isidore Mvouba | Isidore Mvouba |
| Isidore of Alexandria | Izydor |
| Isidore of Kiev | Izydor z Kijowa |
| Isidore of Miletus | Izydor z Miletu |
| Isidore of Seville | Izydor z Sewilli |
| Isidore the Laborer | Izydor Oracz |
| Isildur | Isildur |
| Ising model | Model Isinga |
| Isis | Izyda |
| Isisaurus | Isizaur |
| Iskar | Iskyr |
| İskenderun | Aleksandretta |
| Isla Aves | Wyspa Ptasia |
| Isla de Alborán | Isla de Alborán |
| Isla de Aves | Wyspa Ptasia |
| Isla de la Juventud | Isla de la Juventud |
| Isla de los Estados | Wyspa Stanów |
| Isla Grande de Tierra del Fuego | Ziemia Ognista |
| Isla Margarita | Margarita |
| Isla Perejil | Perejil |
| Islam | islam |
| Islamabad | Islamabad |
| Islamabad Capital Territory | Stołeczne Terytorium Islamabadu |
| Islamic | islamski |
| Islamic architecture | Architektura islamu |
| Islamic calendar | Kalendarz muzułmański |
| Islamic calligraphy | Kaligrafia arabska |
| Islamic clergy | Ulem |
| Islamic Courts Union | Unia Trybunałów Islamskich |
| Islamic fundamentalism | Fundamentalizm islamski |
| Islamic Jihad | Islamski Dżihad |
| Islamic Jihad Movement in Palestine | Palestyński Islamski Dżihad |
| Islamic Movement of Uzbekistan | Islamski Ruch Uzbekistanu |
| Islamic philosophy | Filozofia świata islamu |
| Islamic Renaissance Party of Tajikistan | Islamska Partia Odrodzenia Tadżykistanu |
| Islamic republic | Republika islamska |
| Islamic Republic of Iran | Iran |
| Islamic Republic of Mauritania | Mauretania |
| Islamic Republic of Pakistan | Pakistan |
| Islamic Salvation Front | Islamski Front Ocalenia |
| Islamic studies | islamistyka |
| Islamic view of Aaron | Aaron |
| Islamic view of Abraham | Abraham |
| Islamic view of Adam | Adam |
| Islamic view of Ezra | Księga Ezdrasza |
| Islamic view of Ishmael | Izmael |
| Islamic view of Jesus | Isa |
| Islamic view of Lot | Lot |
| Islamic view of Moses | Mojżesz |
| Islamic view of Noah | Noe |
| Islamic view of Solomon | Salomon |
| Islamic view of Virgin Mary | Maria w islamie |
| Islamic view of Zechariah | Zachariasz |
| Islamism | Islamizm |
| Islamitic | Islam |
| Islamization | islamizacja |
| Islamize | islamizować |
| Islamophobia | islamofobia |
| island | wyspa |
| Island arc | Łuk wysp |
| island ecosystem | ekosystem wysp |
| Island Fox | Lis wyspowy |
| Island hopping | Taktyka żabich skoków |
| Island of California | Kalifornia |
| Island of Mozambique | Mozambik |
| Island of stability | Wyspa stabilności |
| islander | wyspiarz |
| Islands District | Islands |
| Islands of Four Mountains | Wyspy Czterech Gór |
| Islands of Indonesia | Wyspy Indonezji |
| Islas Chafarinas | Islas Chafarinas |
| Islas Los Frailes | Wyspy Los Frailes |
| isle | wyspa |
| Isle of Arran | Arran |
| Isle of Balar | Wyspa Balar |
| Isle of Jura Single Malt | Jura |
| Isle of Man | Wyspa Man |
| Isle of Man Airport | Lotnisko Ronaldsway |
| Isle of Man National Anthem | Arrane Ashoonagh dy Vannin |
| Isle of Mann | Wyspa Man |
| Isle of Mull | Mull |
| Isle of Skye | Skye |
| Isle of the Dead | Wyspa umarłych |
| Isle of Wight | Wight |
| Isle of Youth | Isla de la Juventud |
| Isle Royale National Park | Park Narodowy Isle Royale |
| Isles of Scilly | Scilly |
| Islom Karimov | Islom Karimov |
| Islote Horacio | Horacy |
| İslâm III Giray | Islam III Girej |
| ISM band | ISM |
| Ismael Urzaiz | Ismael Urzaiz |
| Ismail al-Mansur | Al-Mansur |
| İsmail Enver | İsmail Enver |
| İsmail Gaspıralı | İsmail Gaspıralı |
| Ismail Haniyeh | Ismail Hanija |
| Ismail Ibn Sharif | Mulaj Ismail |
| Ismail Kadare | Ismail Kadare |
| Ismail Khan | Ismael Chan |
| Ismail Omar Guelleh | Ismail Omar Guelleh |
| Ismail Qemali | Ismail Qemali |
| Ismail Samani | Ismail |
| Ismailia Governorate | Ismailia |
| Ismaily SC | Ismailia |
| Ismaning | Ismaning |
| Ismaël Bullialdus | Ismail Bouillaud |
| Ismaïlia | Ismailia |
| Ismene | Ismena |
| İsmet İnönü | Inönü |
| Ismoil Somoni Peak | Pik Ismaila Samaniego |
