Encyclopedias, Almanacs, Transcripts, and Maps
- Iron Age Germany
- Iron Age Ireland
- Iron Age Poland
- Iron Age Social Organization
- Iron Age Ukraine and European Russia
- Iron Gates Mesolithic
- Ironworking
- Irrationalism
- IRREGULAR VERB
- Irshad An-Niswaan
- Irula
- Irvine, Reed John
- Irwin, James Benson
- Isa Family, al-
- Isaac of Stella (c. 1100–c. 1169)
- Isaacs, Jorge (1837–1895)
- Isabel, Princess of Brazil (1846–1921)
- Isabella I of Castile (1451–1504)
- Isabella of Castile 1451–1504 Spanish Queen
- Isamitt Alarcón, Carlos (1887–1974)