Encyclopedias, Almanacs, Transcripts, and Maps
- Ibn Khaldūn (1332–1406)
- Ibn Musa, Ahmad
- Ibn Ṭufayl (d. 580 AH/1185 CE)
- Ibn Tulun Mosque
- Ibn Zaddik, Joseph ben Jacob (d. 1149)
- Ica, Pre-Columbian
- Icaza Coronel, Jorge (1906–1979)
- İdadi Schools
- Ideal Observer Theories of Ethics
- Ideas
- Ideas, Spread of
- IDIOLECT
- Idlib Province
- Ifugao
- Ifugao
- Iglesias Castro, Rafael (1861–1924)
- Iglesias Pantin, Santiago (1872–1939)
- Iglesias, José María (1823–1891)
- Iglesias, Miguel (1830–1909)
- Iglulik Inuit