| 24805 | Paakantyi | ŋad̲u | | | Hercus (1982) | |
| 42029 | Orokolo | are | | | Brown (1972) | |
| 44645 | Old Hittite | ɑpɑ̄š | The form 'ɑpɑš' is also listed (Hoffner Jr and Melcher 2008:133-4). | | Hoffner Jr and Melcher (2008) | |
| 30870 | Oksapmin | olxap | | | Loughnane (2009) | |
| 30869 | Oksapmin | ox | | | Loughnane (2009) | |
| 36049 | Oksapmin | ox | | | Loughnane (2009) | |
| 27585 | Occitan | el | | | Wheeler (1988b) | |
| 52489 | Ocaina | i̙ha̙ | | | Rosselli (2000) | |
| 25697 | Nyulnyul | kiɲiŋk | | | McGregor (2011) | |
| 28618 | Nyawaygi | ñaŋga | | | Dixon (1983) | |
| 61846 | Numanggang | adi | | | Hynum (2010) | |
| 53624 | Nukak Makú | kaan | | | Bolaños and Epps (2009) | |
| 50785 | Nothern Sotho | lɔna | | | Lourwrens el al. (1995) | |
| 49165 | North Marquesan | iɑ | | | Cablitz (2006) | |
| 43926 | North Levantine Arabic (Damascene Dialect) | huwːe | | | Cowell (1964) | |
| 46277 | Northern Pumi (Northwest Yunnan Dialect) | ni˥˩ | | | Ding (2014) | |
| 51838 | Northern Embera | itʃira | | | Mortensen (1999) | |
| 53337 | Northern Embera | iǰi | | | Pardo and Aguirre (1993) | |
| 58932 | Noone | wen˧ | | | Hyman (1981) | |
| 51265 | Noon | yɪ | | | Soukka (2000) | |
| 58649 | Nizaa | ŋu˧ | | | Kjelsvik (2002) | |
| 43577 | Nigerian Pidgin | im | | | Faraclas (1996) | |
| 47601 | Nhanda | ala | | | Blevins (2001) | |
| 22703 | Ngkolmpu | pi | | | Carroll (2013) | |
| 23191 | Ngiyambaa | =naN- | | | Donaldson (1980) | |
| 23190 | Ngiyambaa | =niN- | | | Donaldson (1980) | |
| 60093 | ngiti_ICR_WB | ka, kà, àbadhi | | | Kutsch Lojenga, Constance. (1994) | |
| 60655 | ngiti_ICR_TCC | ka | | | Lojenga, Constance Kutsch (1994) | |
| 59949 | Ngiti-ICR-LB | ka, kà, àbadhi | | | Kutsch Lojenga (1994) | |
| 56927 | Ngbandi | lo˩ | | | Toronzoni (1989) | |
| 46181 | Ngarinman (Bilinara (Pilinara) Dialect) | ɲandu | | | Meakins and Nordlinger (2014) | |
| 28342 | Ngankikurungkurr | nem | | | Hoddinott and Kofod (1988) | |
| 35476 | Ngandi | ṇiwan | | | Heath (1978) | |
| 22975 | Ngalakan | ɳiɲjaʔ | | | Merlan (1983) | |
| 46325 | Neverver | ei | | | Barbour (2012) | |
| 61702 | Neve'ei | i | | | Musgrave (2007) | |
| 22176 | Nen | bä | | | Evans (2013) | |
| 35952 | Nen | bä | | | Evans (2013) | |
| 26124 | Neme | bæ | | | Evans (2012) | |
| 43734 | Ndyuka | a | | | Huttar and Huttar (1994) | |
| 55709 | Ndut | ɗi, ri | | | Morgan (1996) | |
| 46605 | Ndom | ɛf | | | Boelaars (1950) | |
| 59068 | Ndoe | we | | | Byström (1954) | |
| 29105 | Ndjébbana | nakébba | | | McKay (2000) | |
| 56651 | Nawuri | è | | | Sherwood (1982) | |
| 58363 | Nateni | o˩ | | | Neukom (1995) | |
| 59701 | Namo (Tais Dialect) | fæ | | | Evans et al (2017) | |
| 41701 | Namia | loko | | | Feldpausch and Feldpausch (1992) | |
| 22318 | Nambu | bä | | | Evans (2013) | |
| 59605 | Nama | ɸæ | | | Evans et al (2017) | |
