| 44415 | Tuvaluan | -u | | | Besnier (2000) | |
| 44463 | Tuvaluan | -u | | | Besnier (2000) | |
| 56233 | Tuwuli | nɔ | | | Harley (2005) | |
| 52647 | Tuyuca | -ja | | | Barnes and Malone (2000) | |
| 25067 | Tyeraity | niñ | | | Breen (1990) | |
| 24387 | Ungarinyin | ñuŋanaŋga | | | Rumsey (1982) | |
| 50411 | Ura | arka | | | Crowley (1999) | |
| 49511 | Urdu | aapkaa | | | Bhatia and Koul (2000) | |
| 40843 | Urim | kitn | | | Hemmilä and Luoma (1987) | |
| 39992 | Usan | nonou | | | Reesink (1987) | |
| 29817 | Usan | nonou | | | Reesink (1987) | |
| 47183 | Usarufa | a- | | | Ross (1995) | |
| 46951 | Ute-Southern Paiute | -mɯ̥ | | | Givón (2011) | |
| 50747 | Vaeakau-Taumako | u | | | Næss (2000) | |
| 42551 | Vanimo | mè | | | Ross (1980) | |
| 42552 | Vanimo | mì | | | Ross (1980) | |
| 57849 | Viemo | wo | | | Prost (1979) | |
| 62574 | Wahgi | -nim | | | Phillips (1976) | |
| 28472 | Wambaya | ngangi, ngangadi | | | Nordlinger (1998) | |
| 31784 | Wambon | ngga- | | | de Vries and de Vries-Wiersma (1992) | |
| 24863 | Wandarang | ñigi | | | Heath (1980a) | |
| 25542 | Wangkajunga | nyuntukurnu | | | Jones (2011) | |
| 44847 | Wappo | mimeʔ | | | Thompson et al. (2006) | |
| 57993 | Wara | mi, m˩ | | | Prost (1968) | |
| 59471 | Wára | mbone | | | Evans et al (2017) | |
| 45855 | Warao | hi- | | | Romero-Figeroa (1997) | |
| 40510 | Warapu | mĕmá | | | Corris (2005) | |
| 25978 | Wargamay | ŋinu | | | Dixon (1981) | |
| 35058 | Warrnambool | -ngu | | | Blake (2003) | |
| 23342 | Warta Thundai | mbun | | | Quinn () | |
| 46431 | Warungu | jino | | | Tsunoda (2011) | |
| 42795 | Waskia | nika | | | Ross (2014) | |
| 31011 | Wati-Wati | nginayu | | | Blake et al. (2011) | |
| 26046 | Watjarri | ñintaŋu | | | Douglas (1981) | |
| 53059 | Wayuu | pɨ- | | | Mansen and Captain (2000) | |
| 60247 | Welsh-ICR-KQ | dy- | mutation pattern issue | | King (2003) | |
| 60521 | Welsh-ICR-NE | dyº | | | King (2003) | |
| 60569 | Welsh-ICR-NE | dyº | | | King (2003) | |
| 55001 | West-Central Limba | nda | | | Mukarovsky (1962/1963) | |
| 30501 | Western Dani | ko- | | | Barclay (2008) | |
| 30503 | Western Dani | ka- | | | Barclay (2008) | |
| 30502 | Western Dani | ke- | | | Barclay (2008) | |
| 30500 | Western Dani | k- | | | Barclay (2008) | |
| 62592 | Wilawila | g- | | | Capell and Coate (1984) | |
| 42595 | Wipim | moina | | | Dondorp and Shim (1997) | |
| 55767 | Wolof | sa | | | Ngom (2003) | |
| 25203 | Worrorra | ŋudjunaŋga | | | Capell and Coate (1984) | |
| 52272 | Woun Meu | pɯɕ | | | Fonegra (2000) | |
| 28540 | Wunambal | nnaaningge | | | Carr (2000) | |
| 48277 | Yabem | nem | | | Lynch et al. (2002) | |
