Ong
Öñge
Ongota
Onin
Onin Based Pidgin
Oniyan
Onjob
Ono
Onobasulu
Onondaga
Ontenu
Ontong Java
Oorlams
Opao
Opata
Opuuo
Orang Kanaq
Orang Seletar
Orejón
Oring
Oriya
Oriya, Adivasi
Orma
Ormu
Ormuri
Oro
Oroch
Oroha
Orok
Orokaiva
Oroko
Orokolo
Oromo, Borana-Arsi-Guji
Oromo, Eastern
Oromo, West Central
Oroqen
Orowe
Oro Win
Oruma
Orya
Osage
Osatu
Oshiwambo
Osing
Ososo
Ossetic
Otank
Ot Danum
Oti
Otomi, Eastern Highland
Ethnologue Primary Language Names