Culture or time period
- Iranian Intermezzo (819–1003 AD)3
- Iranon6
- Iraqi Turkmens2
- Iraqi cultures2
- Iraqw People114
- Irian Jaya cultures313
- Irish22
- Irish cultures22
- Iron Age54
- Iron Age of Cyprus (ca. 1050–525 BC)45
- Iroquois101
- Isconahua3
- Isleta58
- Isoko24
- Italian454
- Italian cultures454
- Italian peninsular cultures454
- Italic people3,784
- Italiote5
- Italo-Geometric3