| 23454 | Zorop | nare | | | Voorhoeve (1975) | |
| 29067 | Zorop | war | | | Voorhoeve (1971) | |
| 23464 | Zorop | wiŋgu | | | Voorhoeve (1975) | |
| 31217 | Zimakani (South Boazi Dialect) | gěi̯nɑm | | | Voorhoeve (1970) | |
| 27740 | Zimakani (Begua Dialect) | lava | cut tree | | Voorhoeve (1970) | |
| 28043 | Zimakani (Begua Dialect) | tae | | | Voorhoeve (1970) | |
| 31029 | Zimakani | tae | | | Voorhoeve (1970) | |
| 55306 | Zia (Mawai Dialect) | e | tree | | Smallhorn (2011) | |
| 55308 | Zia (Mawai Dialect) | i | tree | | Smallhorn (2011) | |
| 28304 | Zia (Mawai Dialect) | i | | | Wilson (1969) | |
| 55305 | Zia | i | tree | | Smallhorn (2011) | |
| 27879 | Zia | i | | | Wilson (1969) | |
| 157119 | Yopno (Kewieng Dialect) | dere | | | McElhanon and Voorhoeve (1970) | tree |
| 25394 | Yongkom | at | | | Voorhoeve (1975) | |
| 24021 | Yoke | aba* | *Moszkowski list | | Voorhoeve (1975) | |
| 123156 | Yoidik | ɛp | | | Z'graggen (1980) | tree |
| 244157 | Yis | nifif | | | Laycock (1968) | |
| 163823 | Yimas | yan | | | Davies and Comrie (1985) | tree |
| 7655 | Yimas | yan | | | Foley (1986) | |
| 244159 | Yil | lo: | | | Laycock (1968) | |
| 198019 | Yetfa | yo | | | Conrad and Dye (1975) | |
| 23901 | Yetfa | yau | | | Voorhoeve (1975) | |
| 198020 | Yetfa | yɔ | | | Conrad and Dye (1975) | |
| 237740 | Yessan-Mayo | me | | | Foley (2005) | |
| 244182 | Yessan-Mayo | me | | | Laycock (1968) | |
| 244183 | Yessan-Mayo (Warasai Dialect) | meʔ | | | Laycock (1968) | |
| 26046 | Yelmek | doyo | | | Voorhoeve (1975) | |
| 157176 | Yelmek | doyo | | | McElhanon and Voorhoeve (1970) | tree |
| 55302 | Yekora | ĩ | wood | | Smallhorn (2011) | |
| 28489 | Yekora | ĩ | | | Wilson (1969) | |
| 20822 | Yei | per | | | Voorhoeve (1975) | |
| 55346 | Yegha (Yega Dialect) | li | tree | | Smallhorn (2011) | |
| 55345 | Yegha (Oukena Dialect) | yi | tree | | Smallhorn (2011) | |
| 55367 | Yegha (Korafe Dialect) | i[ka] | wood | | Smallhorn (2011) | |
| 55364 | Yegha (Korafe Dialect) | i[aka] | tree | | Smallhorn (2011) | |
| 55344 | Yegha (Ambe-Dofo Dialect) | yii | type of tree | | Smallhorn (2011) | |
| 196779 | Yawiyo (Wosawari Dialect) | yanu | | | Conrad and Dye (1975) | |
| 74675 | Yaweyuha | ya | | | Scott (1978) | |
| 220888 | Yaweyuha | y̠a | | | SIL (1965) | |
| 20499 | Yawa | nyo | | | Voorhoeve (1975) | |
| 244156 | Yau | nimpip | | | Laycock (1968) | |
| 142231 | Yarawata | nʌ:ma | | | Z'graggen (1980) | tree |
| 223324 | Yaqay (Wanggate Dialect) | dɛ | | | Kriens & Lebold (2010) | |
| 223093 | Yaqay (Wairu Dialect) | dɛ | | | Kriens & Lebold (2010) | |
| 222969 | Yaqay (Rayam Dialect) | dɛ | | | Kriens & Lebold (2010) | |
| 222690 | Yaqay (Kotup Dialect) | dɛ | | | Kriens & Lebold (2010) | |
| 220286 | Yaqay (Kogo Dialect) | dɛ | | | Kriens & Lebold (2010) | |
| 157175 | Yaqay | de | | | McElhanon and Voorhoeve (1970) | tree |
| 29172 | Yaqay | de | | | Voorhoeve (1971) | |
| 23032 | Yaqay | de | | | Voorhoeve (1975) | |
