| 158497 | Yau (mup Dialect) | yamo | | | McElhanon and Voorhoeve (1970) | water |
| 158498 | Yau (Sindamon Dialect) | yamuʔ | | | McElhanon and Voorhoeve (1970) | water |
| 158494 | Yau (Worin Dialect) | yamuʔ | | | McElhanon and Voorhoeve (1970) | water |
| 158495 | Yau (Yawan Dialect) | yamuk | | | McElhanon and Voorhoeve (1970) | water |
| 24560 | Yaur | nagre | | | Voorhoeve (1975) | |
| 20501 | Yawa | karu (?) | | | Voorhoeve (1975) | |
| 220887 | Yaweyuha | no | | | SIL (1965) | |
| 74762 | Yaweyuha | no | | | Scott (1978) | |
| 196785 | Yawiyo (Wosawari Dialect) | utlauwe | | | Conrad and Dye (1975) | |
| 55751 | Yegha (Korafe Dialect) | uβu | water | | Smallhorn (2011) | |
| 55752 | Yegha (Korafe Dialect) | 'uβu | water; liquid | | Smallhorn (2011) | |
| 55728 | Yegha (Oukena Dialect) | umo | water | | Smallhorn (2011) | |
| 55729 | Yegha (Yega Dialect) | umo | water | | Smallhorn (2011) | |
| 20824 | Yei | kao | | | Voorhoeve (1975) | |
| 158552 | Yekora | ou | | | McElhanon and Voorhoeve (1970) | water |
| 28488 | Yekora | ou | | | Wilson (1969) | |
| 55697 | Yekora | ou | water | | Smallhorn (2011) | |
| 26048 | Yelmek | ju | | | Voorhoeve (1975) | |
| 24480 | Yeretuar | irembe | | | Voorhoeve (1975) | |
| 243935 | Yessan-Mayo (Warasai Dialect) | okw | | | Laycock (1968) | |
| 243934 | Yessan-Mayo | okw | | | Laycock (1968) | |
| 237613 | Yessan-Mayo | ok | | | Foley (2005) | |
| 23903 | Yetfa | kel | | | Voorhoeve (1975) | |
| 198027 | Yetfa | kɛr᷈ | | | Conrad and Dye (1975) | |
| 243911 | Yil | ni: | | | Laycock (1968) | |
| 7636 | Yimas | arɨm | | | Foley (1986) | |
| 235361 | Yimas | arɨm | | | Foley (2005) | |
| 236031 | Yimas | arɨm | | | Foley (2005) | |
| 163798 | Yimas | ařɛm | | | Davies and Comrie (1985) | water |
| 243909 | Yis | tipal | | | Laycock (1968) | |
| 124340 | Yoidik | ilo: | | | Z'graggen (1980) | water |
| 24029 | Yoke | memba* | *Moszkowski list | | Voorhoeve (1975) | |
| 24023 | Yoke | diri | | | Voorhoeve (1975) | |
| 25396 | Yongkom | oq | | | Voorhoeve (1975) | |
| 158457 | Yongkom | ok | | | McElhanon and Voorhoeve (1970) | water |
| 158501 | Yopno (Kewieng Dialect) | paǥbe | | | McElhanon and Voorhoeve (1970) | water |
| 158502 | Yopno (Nokopo Dialect) | kʌlap | | | McElhanon and Voorhoeve (1970) | water |
| 158550 | Zia | ou | | | McElhanon and Voorhoeve (1970) | water |
| 55699 | Zia | ou | water | | Smallhorn (2011) | |
| 27878 | Zia | ou | | | Wilson (1969) | |
| 55701 | Zia (Mawai Dialect) | o | water | | Smallhorn (2011) | |
| 28303 | Zia (Mawai Dialect) | ou | | | Wilson (1969) | |
| 55702 | Zia (Mawai Dialect) | ou | water | | Smallhorn (2011) | |
| 158551 | Zia (Mawai Dialect) | ou | | | McElhanon and Voorhoeve (1970) | water |
| 31032 | Zimakani | nei̯a | | | Voorhoeve (1970) | |
| 257242 | Zimakani | nia | | | Murray and Ray (1918) | |
| 28046 | Zimakani (Begua Dialect) | nei̯a | | | Voorhoeve (1970) | |
| 31220 | Zimakani (South Boazi Dialect) | ɑɔḳ | | | Voorhoeve (1970) | |
| 23456 | Zorop | yender | | | Voorhoeve (1975) | |
| 29072 | Zorop | djewek | | | Voorhoeve (1971) | |
