| 561 | Daloa Bété | Zogbo (2004) | Free |
| 406 | Kawaiisu | Zigmond et al. (1990) | Free |
| 606 | Toussian, Northern | Zaugg-Coretti (2005) | Free |
| 510 | Yucuna | Yukuna, Yukuna, Schauer and Schauer (2005) | |
| 580 | Bakwé | Yepi (2006) | Free |
| 329 | Maithili | Yadav (1996) | Free |
| 164 | Amis | Wu (2006) | Free |
| 402 | Kaonde | Wright (2008) | Free |
| 52 | Yindjibarndi | Wordick (1982) | Free |
| 115 | Tok Pisin | Woodford (1979) | Free |
| 182 | Cebuano | Wolff (1965) | Free |
| 567 | Akebu | Wolf (1907) | Free |
| 607 | Tiéfo | Winkelmann (1998) | Free |
| 539 | Bijago | Wilson (2007) | Free |
| 550 | Banhum | Wilson (2007) | Free |
| 552 | Pajade | Wilson (2007) | Free |
| 554 | Tanda | Wilson (2007) | Free |
| 551 | Biafada | Wilson (2007) | Free |
| 553 | Konyagi | Wilson (2007) | Free |
| 546 | Jola-Kasa (Husuy Dialect) | Wilson (2007) | Free |
| 541 | Themne | Wilson (2007) | Free |
| 544 | Nalu | Wilson (2007) | Free |
| 545 | Sua | Wilson (2007) | Free |
| 547 | Kuwaataay (Diembering Dialect) | Wilson (2007) | Free |
| 542 | Baga Sitemu | Wilson (2007) | Free |
| 548 | Cassanga | Wilson (2007) | Free |
| 549 | Cobiana | Wilson (2007) | Free |
| 538 | Balanta-Kentohe | Wilson (1961) | Free |
| 555 | Karon | Wilson (1961) | Free |
| 455 | Sranan | Wilner (2007) | Free |
| 129 | Tetun Dili | Williams-van Klinken et al. (2002) | Free |
| 44 | Yuwaalaraay | Williams (1980) | Free |
| 345 | Kaingang | Wiesemann (1972) | Free |
| 603 | Karaboro, Eastern | Wichser (1994) | Free |
| 195 | Menya | Whitehead (2004) | Free |
| 483 | Siona | Wheeler (2000) | |
| 88 | Occitan | Wheeler (1988b) | |
| 90 | Catalan | Wheeler (1988a) | |
| 363 | South Awyu | Wester (2014) | Free |
| 359 | Mandobo | Wester (2014) | Free |
| 360 | Aghu | Wester (2014) | Free |
| 361 | Asue Awyu | Wester (2014) | Free |
| 362 | Edera Awyu | Wester (2014) | Free |
| 610 | Bariba | Welmers (1952) | Free |
| 310 | Savosavo | Wegener (2012) | Free |
| 438 | Huallaga Huánuco Quechua | Weber (1989) | Free |
| 411 | Kham (Western Parbate) (Takale Dialect) | Watters (2002) | Free |
| 625 | Ejagham | Watters (1981) | Free |
| 104 | Djinang | Waters (1989) | Free |
| 166 | Thao | Wang (2004) | Free |
