| 142654 | Mawak | mundu | | | Z'graggen (1980) | fire |
| 123594 | Mawan | aim | | | Z'graggen (1980) | fire |
| 25744 | Mawes | kani | | | Voorhoeve (1975) | |
| 24188 | Ma'ya | lap | | | Voorhoeve (1975) | |
| 77879 | Maybrat | tafoh | | | Dol (2007) | |
| 77053 | Mbaniata | hiro | fire | | Tryon & Hackman (1983) | |
| 76666 | Mbaniata (Lokuru Dialect) | hirɔ | fire | | Tryon & Hackman (1983) | |
| 76627 | Mbilua | uza | fire | | Tryon & Hackman (1983) | |
| 76422 | Mbilua (Ndovele Dialect) | uza | fire | | Tryon & Hackman (1983) | |
| 236724 | Mbore | tak | | | Foley (2005) | |
| 244099 | Mehek | kiri | | | Laycock (1968) | |
| 25864 | Mekwei | kei-sini | | | Voorhoeve (1975) | |
| 265 | Mena | kumu | | | Franklin (1973) | |
| 244108 | Mende | hi | | | Laycock (1968) | |
| 4793 | Menya | ta | | | Lloyd (1973) | |
| 157158 | Mesem | tedzi | | | McElhanon and Voorhoeve (1970) | fire |
| 34340 | Meyah (Akrin Dialect) | ma:x | | | Miedema & Welling (1985) | |
| 34380 | Meyah (Anason Dialect) | merax | | | Miedema & Welling (1985) | |
| 34501 | Meyah (Etskebi Dialect) | merax | | | Miedema & Welling (1985) | |
| 34541 | Meyah (Miun Dialect) | ma:x | | | Miedema & Welling (1985) | |
| 34581 | Meyah (Mumbrani Dialect) | ma:x | | | Miedema & Welling (1985) | |
| 20356 | Meyah | mowoxo | | | Voorhoeve (1975) | |
| 142649 | Miani | ewʌb | | | Z'graggen (1980) | fire |
| 218238 | Migabac | ʒac | | | SIL (1975) | |
| 157160 | Migabac | dzaʔ | | | McElhanon and Voorhoeve (1970) | fire |
| 179659 | Migum | pai | | | Z'graggen (1980) | fire |
| 3062 | Minanibai | mofamofa | | | Franklin (1973) | |
| 3125 | Minanibai | mafi | | | Franklin (1973) | |
| 244087 | Minidien | yakel | | | Laycock (1968) | |
| 25944 | Mlap | kip | | | Voorhoeve (1975) | |
| 142652 | Moere | pikin | | | Z'graggen (1980) | fire |
| 20115 | Moi | yak | | | Voorhoeve (1975) | |
| 19630 | Molof | tombe | | | Voorhoeve (1975) | |
| 29569 | Molof | tombe | | | Voorhoeve (1971) | |
| 157161 | Momare | dzʔ | | | McElhanon and Voorhoeve (1970) | fire |
| 21120 | Mombum | wad | | | Voorhoeve (1975) | |
| 21514 | Momuna | kukwa | | | Voorhoeve (1975) | |
| 22356 | Moni | usa | | | Voorhoeve (1975) | |
| 7296 | Moni (Kemandoga Dialect) | usa | | | Larson & Larson (1972) | |
| 21795 | Mor | taha | | | Voorhoeve (1975) | |
| 20156 | Moraid | salp | | | Voorhoeve (1975) | |
| 25178 | Mor (Austronesian) | moʔana | | | Voorhoeve (1975) | |
| 32338 | Morawa | eu | | | SIL (1973) | |
| 192711 | Moresada | uwisʌp | | | Z'graggen (1980) | fire |
| 3481 | Morigi | ela | | | Wurm (1973) | |
| 21474 | Morori | sir | | | Voorhoeve (1975) | |
| 123587 | Mosimo | ʌre | | | Z'graggen (1980) | fire |
| 19065 | Moskona | merah | | | Voorhoeve (1975) | |
| 34622 | Moskona (Merdey Dialect) | mèrax | | | Miedema & Welling (1985) | |
| 258287 | Motu | lahi | | | Dutton (1970) | fire |
