| 158537 | Mesem | tu | | | McElhanon and Voorhoeve (1970) | water |
| 34364 | Meyah (Akrin Dialect) | mey | | | Miedema & Welling (1985) | |
| 34404 | Meyah (Anason Dialect) | miy | | | Miedema & Welling (1985) | |
| 34525 | Meyah (Etskebi Dialect) | mi: | | | Miedema & Welling (1985) | |
| 34565 | Meyah (Miun Dialect) | mey | | | Miedema & Welling (1985) | |
| 34606 | Meyah (Mumbrani Dialect) | mey | | | Miedema & Welling (1985) | |
| 20380 | Meyah | mei | | | Voorhoeve (1975) | |
| 158458 | Mian | ok | | | McElhanon and Voorhoeve (1970) | water |
| 143297 | Miani | yʌk | | | Z'graggen (1980) | (water) |
| 218253 | Migabac | misa | | | SIL (1975) | |
| 158539 | Migabac | misa | | | McElhanon and Voorhoeve (1970) | water |
| 180325 | Migum | yʌŋ | | | Z'graggen (1980) | water |
| 3057 | Minanibai | ao | | | Franklin (1973) | |
| 243921 | Minidien | supɨ | | | Laycock (1968) | |
| 25968 | Mlap | bu | | | Voorhoeve (1975) | |
| 143300 | Moere | emta | | | Z'graggen (1980) | (water) |
| 20139 | Moi | kala | | | Voorhoeve (1975) | |
| 29621 | Molof | jat | | | Voorhoeve (1971) | |
| 19654 | Molof | yat | | | Voorhoeve (1975) | |
| 158540 | Momare | misa | | | McElhanon and Voorhoeve (1970) | water |
| 21144 | Mombum | mwe | | | Voorhoeve (1975) | |
| 158473 | Mombum | mwe | | | McElhanon and Voorhoeve (1970) | water |
| 21538 | Momuna | iŋga | | | Voorhoeve (1975) | |
| 22380 | Moni | du | | | Voorhoeve (1975) | |
| 7314 | Moni (Kemandoga Dialect) | du | | | Larson & Larson (1972) | |
| 21819 | Mor | sea | | | Voorhoeve (1975) | |
| 20180 | Moraid | kəla | | | Voorhoeve (1975) | |
| 25202 | Mor (Austronesian) | rarum | | | Voorhoeve (1975) | |
| 32352 | Morawa | ya'ama | is this a gamma? | | SIL (1973) | |
| 193095 | Moresada | aneŋʌmp | | | Z'graggen (1980) | water |
| 3476 | Morigi | obo | | | Wurm (1973) | |
| 21498 | Morori | deke | | | Voorhoeve (1975) | |
| 124338 | Mosimo | ǰi: | | | Z'graggen (1980) | water |
| 19088 | Moskona | mei | | | Voorhoeve (1975) | |
| 34646 | Moskona (Merdey Dialect) | mey | | | Miedema & Welling (1985) | |
| 258136 | Motu | ranu | | | Dutton (1970) | water |
| 34686 | Mpur (Arfu Dialect) | war | | | Miedema & Welling (1985) | |
| 34726 | Mpur (Kebar Dialect) | war | | | Miedema & Welling (1985) | |
| 16815 | Mpur | war | | | Miedema & Welling (1985) | |
| 20300 | Mpur | war | | | Voorhoeve (1975) | |
| 27442 | Mubami | saʔaǥi | | | Reesink (1976) | |
| 3374 | Mubami | ʒagi | | | Franklin (1973) | |
| 258137 | Mulaha | vara | | | Dutton (1970) | water |
| 193091 | Mum | kuku | | | Z'graggen (1980) | water |
| 25002 | Munggui | mare | | | Voorhoeve (1975) | |
| 158521 | Mungkip | ime | | | McElhanon and Voorhoeve (1970) | water |
| 198640 | Mungkip | imɛ | | | Retsema et al. (2009) | |
| 124324 | Munit | vã | | | Z'graggen (1980) | water |
| 158482 | Muratayak | fo | | | McElhanon and Voorhoeve (1970) | water |
| 236029 | Murik | arɨm | | | Foley (2005) | |
