Ila
Ile Ape
Ilianen Manobo
Ili Turki
Ili'uun
Illyrian
Iloko
Ilongot
Ilue
Ilwana
Imbabura Highland Quichua
Imbongu
Imonda
Imroing
Inabaknon
Inapang
Iñapari
Inari Sami
Indian Sign Language
Indonesian
Indonesian Bajau
Indonesian Sign Language
Indo-Portuguese
Indri
Indus Kohistani
Indus Valley Language
Inebu One
Ineseño
Inga
Ingrian
Ingush
Inlaod Itneg
Innu
Inoke-Yate
Inonhan
Inor
Inpui Naga
Interglossa
Interlingua (International Auxiliary Language Association)
Interlingue
International Sign
Intha
Inuinnaqtun
Inuit Sign Language
Inuktitut
Inupiaq
Iowa-Oto
Ipalapa Amuzgo
Ipiko
Ipili
ISO 639-3 Reference Names