- I ... I Get Around
- I Give You My Silence ... I Wanted a Year Without Fall
- I Was a Communist for the FBI ... I-voting
- I-yang ... Ibas
- Ibb ... ibn Badis, ʿAbd al-Hamid
- Ibn Bājjah ... Ibrāhīm ibn ʿAbd Allāh
- Ibrāhīm Katkhudā ... ice cream bean
- Ice Cream for Crow ... icequake
- Icerya purchasi ... icosahedral virus
- icosahedron ... Idea of a University
- Idea of Entropy at Maenporth Beach, The ... ideomotor effect
- ideomotor principle ... Idukki
- Idukki dam ... IFP
- IFR ... ignition condition
- ignition module ... Ijill
- Ijill, Mount ... Ila
- Ila ... iliac vein
- Iliad ... Illoqqortoormiut
- illuminated manuscript ... Ilya Muromets
- Ilya Muromets ... Imamura, Shohei
- Iman ... Immelmann, Max
- Immense Journey, The ... impact wrench
- impacted fracture ... imperial school
- Imperial School of Ballet ... Impresso complex
- imprimatur ... In Cold Hell, in Thicket
- In Country ... In Sicily
- in situ combustion ... In Transit
- In Treatment ... Incendies
- incendio, L’ ... incompatible element
- incompatible mating ... Independence Day
- Independence Day ... India Gate
- India ink ... Indian goods
- Indian gooseberry ... Indian sage
- Indian sculpture ... indie film
- Indiegogo ... Individual Lament
- individual liberty ... Indostomidae
- Indotestudo elongata ... indusium
- Industria de Diseño Textil, SA ... inerrancy
- inert gas ... inferior court
- inferior ganglion of vagus ... influenza virus
- Influenzavirus A ... Ingalls Building
- Inganji Karinga ... inheritance
- Inheritance Act ... inkstand
- Inkster, Juli ... Innocent
- Innocent ... Inquisitio comitatus Cantabrigiensis
- inquisition ... Inspector General, The
- Inspector Maigret ... Instructiones
- Instructions for the Government of Armies in the Field ... integrated machinery plant
- integrated magnitude ... intention
- intention tremor ... Intercursus Magnus
- Intercursus Malus ... Interlinear Glosses
- Interlinear to Cabeza de Vaca: His Relation of the Journey from Florida to the Pacific ... internal market
- internal materials salvage ... International Campaign to Abolish Nuclear Weapons
- International Campaign to Ban Landmines ... International Ellipsoid of Reference
- International Emergency Economic Powers Act ... International Mind Sports Association
- International Ministries, Board of ... International Sun–Earth Explorer 3
- International Sunshine Society ... internment camp
- internode ... interstitial fluid
- interstitial keratitis ... intoxication
- intra-articular fibrocartilage ... Introductiones parvulorum
- Introduzione ad una teoria geometrica delle curve piane ... Inveraray
- Invercargill ... invisible hand
- Invisible Invaders ... ion microanalyzer
- ion microprobe ... Iowa precinct caucuses
- Iowa River ... Ipomoea purga
- Ipomoea purpurea ... Iraq
- ʿIraq ... Iridovirus
- Iriga ... Irkutsk
- Irkutsk ... ironclad
- Irondequoit Bay ... Irving Bank Corporation
- Irving Colburn machine ... isa Bey
- Isa Eghirren ... Isan
- Isandhlwana and Rorke’s Drift, Battles of ... Ishikari River
- Ishikari-gawa ... Iskra
- Iskŭr River ... Ísland
- island ... Ismāʿīl ibn Sharīf
- Ismāʿīl II ... isolationist
- isolator ... isotropic material
- isotropic radiation ... Istállóskő, Mount
- Istanbul ... It Matters to Me
- It Should Happen to You ... Italian labyrinth
- Italian language ... ITBS
- itch mite ... IUE
- Iufaa ... Iverson, Kenneth Eugene
- Ives, Charles ... Iyyar
- Iz tsikla ‘Slava miru’ ... Iʿtimād al-Dawlah, tomb of
