Encyclopedias, Almanacs, Transcripts, and Maps
- Ingalik
- Ingapirca
- Ingarden, Roman (1893–1970)
- Inge, William Ralph (1860–1954)
- Ingenieros, José (1877–1925)
- Ingenieros, José (1877–1925)
- Ingenios
- Ingilos
- INGLIS
- INITIAL TEACHING ALPHABET
- INITIALESE
- INITIALISM
- Inkster, Juli Simpson
- Innate Ideas, Nativism
- Inner Senses
- Inquilinaje
- Institut d'Égypte
- Institute for Palestine Studies
- Institute for Women's Studies in the Arab World (Lebanon)
- Institute of Nutrition of Central America and Panama (INCAP)