1911 Encyclopædia Britannica/Vol 14:3
| valign="top" |
 ../Idria/
 ../Idrialin/
 ../Idrisi/
 ../Idumaea/
 ../Idun/
 ../Idyl/
 ../Iffland, August Wilhelm/
 ../Iglau/
 ../Iglesias/
 ../Ignatiev, Nicholas Pavlovich, Count/
 ../Ignatius/
 ../Ignoramus/
 ../Ignorance/
 ../Ignorantines/
 ../Igualada/
 ../Iguana/
 ../Iguanodon/
 ../Iguvium/
 ../Ijolite/
 ../Iki/
 ../Ilagan/
 ../Ilchester/
 ../Iletsk/
 ../Ilfeld/
 ../Ilford/
| valign="top" |
 ../Ilfracombe/
 ../Ilhavo/
 ../Ili/
 ../Ilion/
 ../Ilkeston/
 ../Ilkley/
 ../Ill/
 ../Illawarra/
 ../Ille-et-Vilaine/
 ../Illegitimacy/
 ../Iller/
 ../Illinois/
 ../Illorin/
 ../Illuminated Manuscripts/
 ../Illuminati/
 ../Illumination/
 ../Illustration/
 ../Illustres/
 ../Illyria/
 ../Ilmenau/
 ../Ilmenite/
 ../Iloilo/
 ../Ilsenburg/
 ../Image/
 ../Image Worship/
| valign="top" |
 ../Imagination/
 ../Imām/
 ../Imbecile/
 ../Imbrex/
 ../Imbros/
 ../Imeretia/
 ../Imidazoles/
 ../Imitation/
 ../Imitation of Christ, The/
 ../Immaculate Conception, The/
 ../Immanence/
 ../Immanuel ben Solomon/
 ../Immermann, Karl Leberecht/
 ../Immersion/
 ../Immigration/
 ../Immortality/
 ../Immunity/
 ../Imola/
 ../Imp/
 ../Impatiens/
 ../Impeachment/
 ../Imperial Chamber/
 ../Imperial Cities or Towns/
 ../Impey, Sir Elijah/
 ../Imphal/
| valign="top" |
 ../Implement/
 ../Impluvium/
 ../Imposition/
 ../Impost/
 ../Impotence/
 ../Impressionism/
 ../Impressment/
 ../Impromptu/
 ../Improvisatore/
 ../In-Antis/
 ../Inaudi, Jacques/
 ../Incantation/
 ../Ince, William/
 ../Ince-in-Makerfield/
 ../Incendiarism/
 ../Incense/
 ../Incest/
 ../Inch/
 ../Inchbald, Mrs Elizabeth/
 ../Inchiquin, Murrough O'Brien, 1st Earl of/
 ../Incledon, Charles Benjamin/
 ../Inclinometer/
 ../Inclosure/
 ../In Coena Domini/
 ../Income Tax/
|}