| i am ... IBM 650 |
| IBM 704 ... Ibrahim ibn Ya'qub |
| Ibrahim Index for African Governance ... Ichazo, Oscar |
| Icheri-Shekher ... Ideology |
| ideology ... Ignatev, P. N., Count |
| Ignatius of Antioch, Saint ... Ikpelweme |
| Ikpo Okme ... illumination |
| illusion ... imide |
| imine ... Imperial City |
| imperial city ... Improving America's Schools Act |
| improvisation ... incised drawing |
| incisional biopsy ... Independent Social Democratic Party of Germany |
| Independent Television ... Indian pipe |
| Indian pitta ... Individual Lament |
| individual method ... induction-type meter |
| inductive effect ... infancy narrative |
| infant betrothal ... infraorbital foramen |
| infraorbital nerve ... Iniet |
| Inisa ... Innocent VII |
| Innocent VIII ... instantaneous velocity |
| instar ... integrator |
| integument ... intercity bus |
| interclavicle ... intermediate reactor |
| intermediate rock ... International Broadcasting Society |
| International Bureau of Education ... International Institute of Genealogy and Heraldry, The |
| International Investment Bank ... International System of Units |
| International Table Tennis Federation ... interstellar gas |
| interstellar matter ... Introit |
| intron ... Ioannina |
| Ioannou, Yorgos ... Iovine, Jimmy |
| Iowa ... Ireland, John |
| Ireland, John ... iron gall ink |
| Iron Gate ... IS54 cellular system |
| IS95 cellular system ... Ishibashi Tanzan |
| Ishida Baigan ... island biogeography, theory of |
| Island Carib ... isomeric transition |
| isomerism ... Istakhr |
| Istallosko, Mount ... Italy, Kingdom of |
| Itami ... Ivanovsky, Dmitry Iosifovich |
| Ivanyi Grunwald, Bela ... Izumo |
| Izumo Cycle ... |
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