ISO Code	Language	Aligned	Terms	Audio	Definitions	Sample
plo	Oluta Popoluca
lto	Olutsotso
lwg	Oluwanga
omg	Omagua
oma	Omaha-Ponca
acx	Omani Arabic
mbm	Ombamba
oml	Ombo
ome	Omejes
nht	Ometepec Nahuatl
omi	Omi
aom	Ömie
omk	Omok
omt	Omotik
omu	Omurano
ona	Ona
one	Oneida
oog	Ong
oon	Önge
oni	Onin
onx	Onin Based Pidgin
bsc	Oniyan
onj	Onjob
ons	Ono
onn	Onobasulu
ono	Onondaga
ont	Ontenu
ojv	Ontong Java
oor	Oorlams
opo	Opao
opt	Opata
lgn	Opuuo
orn	Orang Kanaq
ors	Orang Seletar
sdr	Oraon Sadri
ore	Orejón
org	Oring
ory	Oriya (individual language)
ori	Oriya (macrolanguage)
nlv	Orizaba Nahuatl
orc	Orma
orz	Ormu
oru	Ormuri
orx	Oro
orw	Oro Win
oac	Oroch
bpk	'Ôrôê
ora	Oroha
oaa	Orok
okv	Orokaiva