- I ... I Greet You at the Beginning of a Great Career: The Selected Correspondence of Lawrence Ferlinghetti and Allen Ginsberg, 1955–1997
- I Hardly Knew You ... I’ll Buy You
- I’ll Cry Tomorrow ... IAF
- IAF ... Iberian Peninsula
- Iberian range ... Ibn Isḥāq
- Ibn Jaḥḥāf ... Ibrāhīm, Muḥammad Ḥāfiẓ
- Ibrahim, Saad Eddin ... ice milk
- ice nucleus ... Ichikawa Danjūrō IX
- Ichikawa Danjūrō XI ... ICTR
- ICTU ... ideas, the way of
- Ideas; General Introduction to Pure Phenomenology ... Idiot
- Idiot de la famille, L’ ... IF
- If ... Iger, Jerry
- Iger, Robert ... Iguassú River
- Iguazú Falls ... Ikeuchi Yoshihiro
- Ikeya Kaoru ... Îles Loyauté
- Îles Tuamotu ... Illichivsk
- Illiciaceae ... ilmiye
- Ilmuqah ... imaginary number
- imagination ... imitation
- Imitation de Notre-Dame la lune, L’ ... immunology
- immunophilin ... Imperial Highway
- Imperial Hotel ... impossibility
- impossibility theorem ... In a Silent Way
- In a Time of Violence ... In re Kemmler
- In re Neagle ... In the Wine Time
- In the World ... incendiary shell
- Incendie, L’ ... incommensurability
- incommensurable ... Independence Day
- Independence Grove ... India, Casa da
- India, Conselho da ... Indian law
- Indian leopard ... Indian’s plume
- Indian-Australian Plate ... Indignation
- indigo ... Indo-Isfahan carpet
- Indo-Pacific humpbacked dolphin ... inductance
- induction ... industrial management
- industrial medicine ... Infant Phenomenon
- infant school ... infix
- inflammation ... infraciliature
- infraorbital foramen ... Ingria
- Ingrian ... injection
- injection ... Inner Shrine
- Inner Tarai ... Inoue Kaoru
- Inoue Tetsujirō ... insidious flower bug
- insight ... Institutiones divinarum et saecularium litterarum
- Institutiones grammaticae ... integral domain
- integral equation ... intensional logic
- intensity ... interclavicle
- Intercollegiate Football Association ... Interior, U.S. Department of the
- interior-to-Earths-orbit asteroid ... internal ballistics
- internal capsule ... International Boxing Federation
- International Brigades ... international criminal law
- International Criminal Police Commission ... International Longshore and Warehouse Union
- International Longshoremen’s and Warehousemen’s Union ... international space law
- International Space Station ... Internet outage
- Internet Protocol address ... interstitial atom
- interstitial carbide ... intoxication
- intoxication ... Introduction to the Theory of Mental and Social Measurements, An
- Introductiones parvulorum ... Inverclyde
- Inverell ... invisible web
- Invisible Woman ... ion-chamber dosimeter
- ion-deposition printer ... IP address blocking
- IP banning ... Ipsárion, Mount
- ipsative measurement ... Iraqi Freedom, Operation
- Iraqi Governing Council ... Iris spuria
- Iris variegata ... Iron Crown of Lombardy
- Iron Curtain ... ʿIrq al-Subayʿ
- Irr ... Is 60/40 dead? An asset allocation method hits hard times
- Is a dividend investing strategy right for you? ... Isabelline
- Isabey, Jean-Baptiste ... Isham, Ralph Heyward
- Ishanavarman ... Iskandar-nāmeh
- Iskandariyyah, Al- ... Islamic Society
- Islamic Society of North America ... Ismail Marzuki Park
- Ismail Qemal bey Vlora ... Isola Vulcano
- isolate ... isotope record
- isotope scanning ... Issy-les-Moulineaux
- Issyk-Kul ... It Is Guns
- It Is Never Too Late to Mend ... Italian lords-and-ladies
- Italian Mannerism ... Itelmen
- Itelmen language ... Iuppiter
- IUPUI ... Iviron
- Ivittuut ... Izetbegovic, Bakir
- Iževsk ... Iʿtimād al-Dawlah, tomb of
