| Ilesha | Ilesa |
| Ilford | Ilford |
| İlham Əliyev | Ilham Aliyev |
| Ili | Ili River |
| Ili uld Muhammad Fal | Ely Ould Mohamed Vall |
| Ilia Kulik | Ilia Kulik |
| Ilia Markow | Ilya Markov |
| Ilia Muromiec | Sikorsky Ilya Muromets |
| Ilia Smirin | Ilya Smirin |
| Iliada | Iliad |
| Iliamna | Iliamna Lake |
| Ilian Iliew | Ilian Iliev |
| Ilias Iliadis | Ilias Iliadis |
| Iliasz Zejtulajew | Ilyas Zeytulaev |
| Ilich Ramírez Sánchez | Carlos the Jackal |
| Ilicziwiec Mariupol | FC Illychivets Mariupol |
| Ilie Năstase | Ilie Năstase |
| ILife | ILife |
| Iligan | Iligan City |
| Ilija Petković | Ilija Petković |
| Iliria | Illyria |
| Ilirowie | Illyrians |
| Ilja Cymbalar | Ilia Tsymbalar |
| Ilja Erenburg | Ilya Ehrenburg |
| Ilja Frank | Ilya Frank |
| Ilja Ilf | Ilya Ilf |
| Ilja Kormilcew | Ilya Kormiltsev |
| Ilja Kowalczuk | Ilya Kovalchuk |
| Ilja Miecznikow | Ilya Ilyich Mechnikov |
| Ilja Riepin | Ilya Repin |
| Ilja Roslakow | Ilya Rosliakov |
| Iljuszyn | Ilyushin |
| Ill | Ill |
| Ill Niño | Ill Niño |
| Ille-et-Vilaine | Ille-et-Vilaine |
| Illerkirchberg | Illerkirchberg |
| Illerrieden | Illerrieden |
| Illertissen | Illertissen |
| Illesheim | Illesheim |
| Illidan Stormrage | Illidan Stormrage |
| Illinois | Illinois |
| Illinois Central Railroad | Illinois Central Railroad |
| Illit | Illite |
| Illizi | Illizi |
| Illmensee | Illmensee |
| Illschwang | Illschwang |
| Ilmarinen | Ilmarinen |
| Ilmenau | Ilmenau |
| Ilmień | Lake Ilmen |
| Ilmmünster | Ilmmünster |
| Ilmārs Bricis | Ilmārs Bricis |
| Ilocos | Ilocos Region |
| iloczyn | product |
| Iloczyn diadyczny | Dyadic product |
| Iloczyn kartezjański | Cartesian product |
| Iloczyn Kroneckera | Kronecker product |
| Iloczyn mieszany wektorów | Triple product |
| Iloczyn nieskończony | Infinite product |
| iloczyn skalarny | scalar product |
| Iloczyn tensorowy | Tensor product |
| Iloczyn Wallisa | Wallis product |
| iloczyn wektorowy | vector product |
| Iloilo | Iloilo City |
| Ilokelezja | Ilokelesia |
| Ilona Staller | Ilona Staller |
| Ilopango | Lake Ilopango |
| iloraz | quotient |
| Iloraz inteligencji | Intelligence quotient |
| Ilos | Ilus |
| Iloúă | Length |
| ilość | amount |
| Ilse Koch | Ilse Koch |
| Ilsfeld | Ilsfeld |
| Ilshofen | Ilshofen |
| Ilulissat | Ilulissat |
| Iluminaci Thanateros | Illuminates of Thanateros |
| Iluminacja książki | Illuminated manuscript |
| iluminować | light |
| ilustracja | illustration |
| Iluzja grupowania | Clustering illusion |
| Iluzja kontroli | Illusion of control |
| iluzoryczny | illusory |
| Ilves Tampere | Ilves |
| Ilvesheim | Ilvesheim |
| Ilya Prigogine | Ilya Prigogine |
| im | the |
| IMac | IMac |
| imadło | vise |
| imaginacja | imagination |
| imaginarium | imaginarium |
| Imaginations from the Other Side | Imaginations from the Other Side |
| Imaginations Through the Looking Glass | Imaginations Through the Looking Glass |
| Imagine Cup | Imagine Cup |
| imago | imago |
| imam | imam |
| Imam Alimsułtanow | Imam Alimsultanov |
| Imam Szamil | Imam Shamil |
| Imamici | Twelvers |
| Iman | Iman |
| Imandra | Lake Imandra |
| Imata Kabua | Imata Kabua |
| Imatra | Imatra |
| Imbabura Ibarra | Sporting Club Imbabura |
| imbir | ginger |
| Imbir japoński | Myoga |
| Imbir lekarski | Ginger |
| Imbirowate | Zingiberaceae |
| Imbirowe | Zingiberidae |
| Imbolc | Imbolc |
| imbryk | teapot |
| Imelda Marcos | Imelda Marcos |
| IMHO | List of Internet slang phrases |
| Imhotep | Imhotep |
| Imi Lichtenfeld | Imi Lichtenfeld |
| Imielin | Imielin |
| imieniny | nameday |
| imiennik | namesake |
| imiesłów | participle |
| imiesłów przymiotnikowy bierny | past participle |
| imiesłów przymiotnikowy czynny | participle |
| imiesłów przyszły | future participle |
| imiesłów przysłówkowy | adverbial participle |
| imigracja | immigration |
| imigracyjny | immigration |
| imigrant | immigrant |
| imikwimod | imiquimod |
| Imina | Imine |
| Iminy | Imine |
| Imiona chińskie | Chinese name |
| imipenem | imipenem |
| Imir | Ymir |
| imisja | immission |
| imisja hałasu | noise immission |
| imisja zanieczyszczeń | pollutant immission |
| Imić | Christian name |
| imię | name |
| Imię pośmiertne | Posthumous name |
| Imię róży | The Name of the Rose |
| Imja Tse | Imja Tse |
| Immanuel Kant | Immanuel Kant |
| Immanuel Wallerstein | Immanuel Wallerstein |
| immaterializm | immaterialism |
| Immendingen | Immendingen |
| Immenhausen | Immenhausen |
| Immenreuth | Immenreuth |
| Immenstaad am Bodensee | Immenstaad |
| Immenstadt im Allgäu | Immenstadt |
| Immortal Technique | Immortal Technique |
| immunitet dyplomatyczny | diplomatic immunity |
| Immunologia | Immunology |
| Imnos pros tin Eleftherian | Hymn to Freedom |
| Imo | Imo State |
| Imogen Cunningham | Imogen Cunningham |
| Imola | Imola |
| Impact factor | Impact factor |
| impaktor | impactor |
| impaktyt | impactite |
| Impaled Northern Moonforest | Seth Putnam |
| Impanacja | Impanation |
| impas | finesse |
| imperator | emperor |
| imperatorowa | empress |
| Imperia | Imperia |
| Imperial College London | Imperial College London |
| Imperializm | Imperialism |
| imperium | empire |
| Imperium akadyjskie | Akkadian Empire |
| Imperium brytyjskie | British Empire |
| Imperium Chorezmijskie | Khwarezmian Empire |
| Imperium Galaktyczne | Galactic Empire |
| Imperium Inków | Inca Empire |
| Imperium Klingońskie | Klingon |
| Imperium Mali | Mali Empire |
| Imperium Marathów | Maratha Empire |
| Imperium Osmańskie | Ottoman Empire |
| Imperium rosyjskie | Russian Empire |
| Imperium słońca | Empire of the Sun |
| impertynencja | impertinence |
| implant | implant |
| implementacja | implementation |
| Impluvium | Precipitation area |
| imponderabilia | imponderabilia |
