| intymny | intimate |
| Inuici | Inuit |
| Inuinnaqtun | Inuinnaqtun |
| Inuksuk | Inukshuk |
| Inuktitut | Inuktitut |
| InuYasha | InuYasha |
| Invercargill | Invercargill |
| Inverclyde | Inverclyde |
| Inverness | Inverness |
| Invision Power Board | Invision Power Board |
| inwalida | handicapped |
| Inwar | Invar |
| inwazja | invasion |
| Inwazja jaszczurów | War with the Newts |
| Inwazja na Grenadę | Invasion of Grenada |
| Inwazja potworów | Invasion of Astro-Monster |
| inwencja | invention |
| inwentaryzacja | inventory |
| inwentaryzacja ekologiczna | ecological stocktaking |
| inwentaryzacja szkód leśnych | inventory of forest damage |
| inwentarz | inventory |
| inwersja | inversion |
| Inwersja obsadzeń | Population inversion |
| Inwersja priorytetów | Priority inversion |
| inwestor | investor |
| inwestować | invest |
| inwestycja | investment |
| inwestycja ochrony środowiska | environmental investment |
| inwestycje ochrony środowiska | pollution control investment |
| inwigilacja | surveillance |
| Inwoltować | Put a hex on |
| Inzago | Inzago |
| Inzell | Inzell |
| Inzigkofen | Inzigkofen |
| Inzlingen | Inzlingen |
| Inzynieria elektryczna | Electrical engineering |
| Inés Gorrochategui | Inés Gorrochategui |
| Inönü | İsmet İnönü |
| Inýynier | Engineer |
| Inđija | Inđija |
| inżynier | engineer |
| inżynieria | engineering |
| Inżynieria biomedyczna | Biomedical engineering |
| Inżynieria chemiczna | Chemical engineering |
| inżynieria elektryczna | electrical engineering |
| Inżynieria genetyczna | Genetic engineering |
| inżynieria hydrotechniczna | hydraulic engineering |
| inżynieria lądowa i wodna | civil engineering |
| Inżynieria mechaniczna | Mechanical engineering |
| inżynieria rolna | agricultural engineering |
| inżynieria środowiska | environmental engineering |
| Io | Io |
| Ioan Gruffudd | Ioan Gruffudd |
| Ioannis Amanatidis | Ioannis Amanatidis |
| IOCCC | International Obfuscated C Code Contest |
| Iolanda Balaş | Iolanda Balaş |
| Ion Antonescu | Ion Antonescu |
| Ion Brătianu | Ion Brătianu |
| Ion Creangă | Ion Creangă |
| Ion Emanuel Florescu | Ion Emanuel Florescu |
| Ion Ghica | Ion Ghica |
| Ion Iliescu | Ion Iliescu |
| Ion Luca Caragiale | Ion Luca Caragiale |
| Ion Pacepa | Ion Mihai Pacepa |
| Iona | Iona |
| Ionela Tirlea-Manolache | Ionela Târlea-Manolache |
| Ionikos Pireus | Ionikos FC |
| IOS | Cisco IOS |
| Iosif Shklovsky | Iosif Shklovsky |
| Iowa | Iowa |
| Iowa Stars | Iowa Stars |
| Ioşia | Ioşia |
| IP | IP address |
| IP Multimedia Subsystem | IP Multimedia Subsystem |
| IP spoofing | IP address spoofing |
| Ipatinga | Ipatinga |
| Ipatinga FC | Ipatinga Futebol Clube |
| IPBX | IPBX |
| IPC | Indice de Precios y Cotizaciones |
| IPCop | IPCop |
| Ipecac Records | Ipecac Recordings |
| iperyt | mustard |
| iperyt azotowy | nitrogen mustard |
| iperyt siarkowy | mustard gas |
| iperyt tlenowy | O-mustard |
| Ipeľ | Ipeľ |
| Ipfirewall | Ipfirewall |
| Iphofen | Iphofen |
| IPod | IPod |
| IPod nano | IPod nano |
| IPod shuffle | IPod shuffle |
| IPodLinux | IPodLinux |
| IPOOOO | IPOOO |
| IPPC | International Plant Protection Convention |
| Ippesheim | Ippesheim |
| Ippolito Rosellini | Ippolito Rosellini |
| Ipres | Ypresian |
| IPsec | IPsec |
| Ipsheim | Ipsheim |
| Ipswich | Ipswich |
| ipsylon | upsilon |
| IPTC | International Press Telecommunications Council |
| IPX | IPX |
| IQ | IQ |
| Iqaluit | Iqaluit |
| Iquique | Iquique |
| Iquitos | Iquitos |
| Ira Levin | Ira Levin |
| Iracka Grupa Studyjna | Iraq Study Group |
| Iragna | Iragna |
| Irak | Iraq |
| Irakijczyk | Iraqi |
| Irakijka | Iraqi |
| Irakli Okruaszwili | Irakli Okruashvili |
| Iraklion | Heraklion |
| Iran | Iran |
| Iran Air | Iran Air |
| iranistyka | Iranian studies |
| IRAS | IRAS |
| Irawadi | Ayeyarwady River |
| Irazú | Irazú Volcano |
| Irańczyk | Iranian |
| Irańska Giełda Naftowa | Iranian oil bourse |
| Irańska rewolucja islamska | Iranian Revolution |
| irański | Iranian |
| Irbil | Arbil Governorate |
| irbis | snow leopard |
| Irbit | Irbit |
| IRC | Internet Relay Chat |
| IRC bot | IRC bot |
| IRCd | IRCd |
| Ircha | Chamois |
| Irchenrieth | Irchenrieth |
| IRCnet | IRCnet |
| IrDA | Infrared Data Association |
| Ireen Wüst | Ireen Wüst |
| Irem | Iram of the Pillars |
| Irena | Irene |
| Irena Angelina | Irene Angelina |
| Irena Grecka | Princess Irene of Greece and Denmark |
| Irena Iłłakowiczowa | Irena Iłłakowicz |
| Irena Sendlerowa | Irena Sendler |
| Irene Papas | Irene Papas |
| Ireneusz Jeleń | Ireneusz Jeleń |
| Ireneusz z Lyonu | Irenaeus |
| Irenizm | Irenism |
| irga | cotoneaster |
| irga Dielsa | Diels' cotoneaster |
| Irgun Cwai Leumi | Irgun |
| Irian Zachodni | West Papua |
| Iridium | Iridium |
| Irina Czaszczina | Irina Tchachina |
| Irina Jatczenko | Irina Yatchenko |
| Irina Jusupow | Princess Irina of Russia |
| Irina Lewitina | Irina Levitina |
| Irina Liszczynska | Iryna Lishchynska |
| Irina Palm | Irina Palm |
| Irina Priwałowa | Irina Privalova |
| Irina Rodnina | Irina Rodnina |
| Irina Słucka | Irina Slutskaya |
| Iringa | Iringa Region |
| Iris | Iris |
| Iris Murdoch | Iris Murdoch |
| IRIS-T | IRIS-T |
| Irish Draught | Irish Draught |
| Irish Masters | Irish Masters |
| Irish stew | Irish stew |
| Iriver | Iriver |
| IRIX | IRIX |
| Irkuck | Irkutsk |
| Irkut | Irkut River |
| Irlandczycy | Irish people |
| Irlandczyk | Irishman |
| Irlandia | Ireland |
| Irlandia Południowa | Southern Ireland |
| Irlandia Północna | Ireland |
| Irlandia w Konkursie Piosenki Eurowizji | Ireland in the Eurovision Song Contest |
| Irlandka | Irishman |
| Irlandzcy Ochotnicy | Irish Volunteers |
| Irlandzka Armia Republikańska | Irish Republican Army |
| Irlandzka wojna domowa | Irish Civil War |
| Irlandzka wojna o niepodległość | Irish War of Independence |
| irlandzki | Irish |
| irlandzkie bliźnięta | Catholic twins |
| Irlbach | Irlbach |
| Irma Grese | Irma Grese |
| Irma Lair | Irma Lair |
| Irmina | Irma |
| Irminsul | Irminsul |
| Irmo | Irmo |
| IRMX | RMX |
| Irn Bru | Irn-Bru |
| Irndorf | Irndorf |
| Irnerius | Irnerius |
| Iroda Tuliaganowa | Iroda Tulyaganova |
| Irokez | Mohawk hairstyle |
| Irokezi | Iroquois |
| Iron Butterfly | Iron Butterfly |
| Iron Maiden | Iron Maiden |
| Ironforge | Ironforge |
| ironia | irony |
| ironicznie | ironically |
| Iroquois | Iroquois |
| Iroszkoci | Hiberno-Scottish mission |
| Irpień | Irpin River |
| irracjonalny | irrational |
| Irredenta | Irredentism |
| Irrlicht | Irrlicht Engine |
| Irschenberg | Irschenberg |
| Irsee | Irsee |
| Irszawa | Irshava |
| Irtysz | Irtysh River |
| Irtysz Pawłodar | FC Irtysh |
| Irun | Irun |
| Irvine Welsh | Irvine Welsh |
| Irving Berlin | Irving Berlin |
| Irving Langmuir | Irving Langmuir |
| Irving Stone | Irving Stone |
| Irwin Rose | Irwin Rose |
| Irwin Shaw | Irwin Shaw |
