| 36448 | Kula | s'ɔnnα | | | Stokhof (1975) | |
| 829 | Kuman | suařa | | | Trefry (1969) | |
| 28634 | Kuni-Boazi | kɔpɔ | | | Voorhoeve (1970) | |
| 21967 | Kuni-Boazi | koapo | | | Voorhoeve (1975) | |
| 166001 | Kuot | namurit | | | Lindström (2008) | |
| 24948 | Kurudu | bo-sandi | | | Voorhoeve (1975) | |
| 22533 | Kwerba | abaic | | | Voorhoeve (1975) | |
| 22617 | Kwerba (Airmati Dialect) | aberjas | | | Voorhoeve (1975) | |
| 23102 | Kwerisa | kegei | | | Voorhoeve (1975) | |
| 22898 | Kwesten | afaten | | | Voorhoeve (1975) | |
| 237592 | Kwoma | pochi | | | Foley (2005) | |
| 164062 | Kyaka | mendaki | | | Davies and Comrie (1985) | one |
| 164061 | Kyenele (Kyaimbarang Dialect) | ŋajkə | | | Davies and Comrie (1985) | one |
| 164068 | Kyenele (Miyak Dialect) | ŋaykʰʌkʰ | | | Davies and Comrie (1985) | one |
| 22981 | Lau | basuve | | | Voorhoeve (1975) | |
| 76069 | Lavukaleve | tetelom | one | | Tryon & Hackman (1983) | |
| 76067 | Lavukaleve | dom | one | | Tryon & Hackman (1983) | |
| 164066 | Lembena | wamena | | | Davies and Comrie (1985) | one |
| 164067 | Lembena (Maibi Dialect) | wa'mɛn | | | Davies and Comrie (1985) | one |
| 164075 | Lembena (Yariba Dialect) | wa'mɛn | | | Davies and Comrie (1985) | one |
| 180916 | Lemio | ʌːndogo | | | Z'graggen (1980) | one |
| 256971 | Magɨ | pabra | | | Daniels (2016) | |
| 143876 | Maia (Pila Dialect) | ndoaka | | | Z'graggen (1980) | (one) |
| 143877 | Maia (Saki Dialect) | duʌka | | | Z'graggen (1980) | (one) |
| 20248 | Mai Brat | sau | | | Voorhoeve (1975) | |
| 75343 | Mailu | omu | | | Saville (1912) | |
| 86263 | Mailu (Asiaoro Dialect) | ʔomu | | | Thomson (1975) | |
| 87633 | Mailu (Baibara Dialect) | ʔomu | | | Thomson (1975) | |
| 87085 | Mailu (Borebo Dialect) | ʔomu | | | Thomson (1975) | |
| 88455 | Mailu (Darava Dialect) | ʔomu | | | Thomson (1975) | |
| 88181 | Mailu (Delebai Dialect) | ʔomu | | | Thomson (1975) | |
| 87359 | Mailu (Domara Dialect) | ʔomu | | | Thomson (1975) | |
| 87907 | Mailu (Geagea Dialect) | ʔomu | | | Thomson (1975) | |
| 86537 | Mailu (Ilai Dialect) | ʔomu | | | Thomson (1975) | |
| 86811 | Mailu (Island Dialect) | ʔomu | | | Thomson (1975) | |
| 21566 | Mairasi | taŋggau | | | Voorhoeve (1975) | |
| 221234 | Maiwa | desi'řoe | | | SIL (1973) | |
| 217832 | Maiwa | désirom | | | SIL (1967) | |
| 36331 | Makasae | ʔu (O) uani | | | Stokhof (1975) | |
| 21206 | Maklew | mepola | | | Voorhoeve (1975) | |
| 143875 | Mala | tuɛla | | | Z'graggen (1980) | (one) |
| 143870 | Malas | gɛmɛm | | | Z'graggen (1980) | (one) |
| 180935 | Male | gujega | | | Z'graggen (1980) | one |
| 233138 | Mali (Arambum Dialect) | sɛgɨkʰ | | | SIL (1985) | |
| 233242 | Mali (Makunga Dialect) | asʌŋgʌk | | | SIL (1985) | |
| 237312 | Manambu | nək | | | Foley (2005) | |
| 22818 | Mander | aftegana | | | Voorhoeve (1975) | |
| 231382 | Mandobo Atas | ome | | | Healey (1970) | |
| 25556 | Mandobo Atas | ome | | | Voorhoeve (1975) | |
| 231565 | Mandobo Atas (Kwem Dialect) | ome | | | Healey (1970) | |
