| 48985 | Kawaiisu | ʔimi | | | Zigmond et al. (1990) | |
| 22234 | Kayardild | ñiŋka | | | Evans (1995) | |
| 47804 | Kele | e- | | | Lynch et al. (2002) | |
| 47763 | Kele | ou | | | Lynch et al. (2002) | |
| 58757 | Kemedzung | wə˧ | | | Smoes (2010) | |
| 59822 | Keo (Udiworowatu Dialect) | kau | | | Baird (2002) | |
| 59913 | Keo (Udiworowatu Dialect) | kau | | | Baird (2002) | |
| 49273 | Ket | ū | The form ‘ūk’ is also listed (Georg 2006:163). | | Georg (2006) | |
| 49225 | Kham (Western Parbate) (Takale Dialect) | nɨ̃: | | | Watters (2002) | |
| 45521 | Khmer (Central Dialect) | loːk | | | Haiman (2011) | |
| 46468 | Kimaghima | uŋɡu | | | Boelaars (1950) | |
| 46521 | Kimaghima | uŋɡu | | | Boelaars (1950) | |
| 48745 | Kiowa | ám | | | Adger et al. (2008) | |
| 42329 | Kiwai, Northeast | ro | | | Brown (2009) | |
| 42377 | Kiwai, Southern | rai | | | Ray (1907) | |
| 59766 | Klon | e- | | | Baird (2008) | |
| 38609 | Klon | aan | | | Baird (2008) | |
| 59762 | Klon | o- | | | Baird (2008) | |
| 59738 | Klon | aan | | | Baird (2008) | |
| 38608 | Klon | V- / 0- | V- before consonant initial stems; 0- before vowel initial stems. | | Baird (2008) | |
| 27358 | Klon | V- / 0-, o-, in=, e- | V- for consonant initial stems; 0- for vowel initial stems | | Baird (2008) | |
| 27357 | Klon | aan | | | Baird (2008) | |
| 59764 | Klon | in= | | | Baird (2008) | |
| 43842 | Koasati | isnók | | | Kimball (1991) | |
| 29907 | Kobon | nɨ | | | Davies (1981) | |
| 29906 | Kobon | ne | | | Davies (1981) | |
| 39083 | Kobon | nɨ | | | Davies (1981) | |
| 39082 | Kobon | ne | | | Davies (1981) | |
| 34866 | Kodeoha | igoo | | | Mead (1999) | |
| 42425 | Koitabu | aka | | | Dutton (1975) | |
| 41853 | Kokoda | áiγa | | | de Vries (2004) | |
| 48601 | Kokota | o | | | Palmer (2009) | |
| 57227 | Kolbila | mú | | | Littig (2009) | |
| 31590 | Kombai | gu | | | de Vries (1993) | |
| 40701 | Kombio | yikn | | | Henry (1992) | |
| 24049 | Komnzo | mbæ | | | Doehler () | |
| 57659 | Konni | fɪ | | | Cahill (1999) | |
| 55537 | Konyagi | wəjə | | | Wilson (2007) | |
| 51613 | Koromfe | ŋkɔ | | | Rennison (1997) | |
| 40941 | Koromira | da | | | Rausch (1912) | |
| 39278 | Korowai | gup | | | van Enk and de Vries (1997) | |
| 29460 | Korowai | gu | | | van Enk and de Vries (1997) | |
| 29459 | Korowai | gup | | | van Enk and de Vries (1997) | |
| 53780 | Kotiria | bɨ̃ʔɨ̃́ | | | Waltz and Waltz (2000) | |
| 45089 | Koya | nimma | | | Tyler (1969) | |
| 28957 | Kristang | bo(s) | | | Baxter (1988) | |
| 56707 | Krobu | bo˧ | | | Mensah (1983) | |
| 28126 | Kuku Yalanji | yundu | | | Patz (2002) | |
| 58043 | Kulango, Bouna | wʊ˩ | | | Elders (2008) | |
| 42185 | Kunimaipa | ni | | | Geary (1977) | |
