| 76543 | Mbilua | ŋase | arm | | Tryon & Hackman (1983) | |
| 76377 | Mbilua (Ndovele Dialect) | ŋase | arm | | Tryon & Hackman (1983) | |
| 243482 | Mehek | lesu | | | Laycock (1968) | |
| 25852 | Mekwei | ta | arm | | Voorhoeve (1975) | arm |
| 243 | Mena | sɛmarʌ | arm | | Franklin (1973) | arm |
| 243491 | Mende | tapa | | | Laycock (1968) | |
| 4771 | Menya | hipa | arm | | Lloyd (1973) | arm |
| 160372 | Mesem | bʌt | | | McElhanon and Voorhoeve (1970) | arm |
| 34328 | Meyah (Akrin Dialect) | mitma | arm | | Miedema & Welling (1985) | arm |
| 34368 | Meyah (Anason Dialect) | mè:s | arm | | Miedema & Welling (1985) | arm |
| 34489 | Meyah (Etskebi Dialect) | titim | arm | | Miedema & Welling (1985) | arm |
| 34529 | Meyah (Miun Dialect) | mès | arm | | Miedema & Welling (1985) | arm |
| 34569 | Meyah (Mumbrani Dialect) | mitma | arm | | Miedema & Welling (1985) | arm |
| 20344 | Meyah | etma | arm | | Voorhoeve (1975) | arm |
| 160279 | Mian | het | | | McElhanon and Voorhoeve (1970) | arm |
| 160277 | Mian | pan | forearm | | McElhanon and Voorhoeve (1970) | arm |
| 140016 | Miani | -uapo | | | Z'graggen (1980) | arm |
| 160374 | Migabac | more | | | McElhanon and Voorhoeve (1970) | arm |
| 177013 | Migum | kulʌ | | | Z'graggen (1980) | arm |
| 3040 | Minanibai | pipini | arm | | Franklin (1973) | arm |
| 243470 | Minidien | lahə́ | | | Laycock (1968) | |
| 25932 | Mlap | kit | arm | | Voorhoeve (1975) | arm |
| 140019 | Moere | ampen | | | Z'graggen (1980) | arm |
| 20103 | Moi | wehin | arm | | Voorhoeve (1975) | arm |
| 19618 | Molof | lai | arm | | Voorhoeve (1975) | arm |
| 160375 | Momare | me | | | McElhanon and Voorhoeve (1970) | arm |
| 21108 | Mombum | bukur | arm | | Voorhoeve (1975) | arm |
| 260758 | Momuna | te | | | Voorhoeve (1975) | |
| 260759 | Momuna | teri | | | Voorhoeve (1975) | |
| 22344 | Moni | hane | arm | | Voorhoeve (1975) | arm |
| 21783 | Mor | nadara | arm | | Voorhoeve (1975) | arm |
| 20144 | Moraid | veniŋ | arm | | Voorhoeve (1975) | arm |
| 25166 | Mor (Austronesian) | varea | arm | | Voorhoeve (1975) | arm |
| 191222 | Moresada | -gɔmbogər̃ | | | Z'graggen (1980) | arm |
| 3459 | Morigi | tu | arm | | Wurm (1973) | arm |
| 21462 | Morori | korox | arm | | Voorhoeve (1975) | arm |
| 120703 | Mosimo | abi- | | | Z'graggen (1980) | arm |
| 19054 | Moskona | itma | arm | | Voorhoeve (1975) | arm |
| 34610 | Moskona (Merdey Dialect) | mungomu | arm | | Miedema & Welling (1985) | arm |
| 257699 | Motu | ima- | | | Dutton (1970) | arm |
| 34650 | Mpur (Arfu Dialect) | èwom | arm | | Miedema & Welling (1985) | arm |
| 34690 | Mpur (Kebar Dialect) | an | arm | | Miedema & Welling (1985) | arm |
| 16779 | Mpur | iyom | arm | | Miedema & Welling (1985) | arm |
| 20264 | Mpur | yom | arm | | Voorhoeve (1975) | arm |
| 27418 | Mubami | pipini | arm | | Reesink (1976) | arm |
| 3357 | Mubami | posiʔi | arm | | Franklin (1973) | arm |
| 257700 | Mulaha | didiva | | | Dutton (1970) | arm |
| 191218 | Mum | kuma | | | Z'graggen (1980) | arm |
| 24966 | Munggui | bara | arm | | Voorhoeve (1975) | arm |
| 160357 | Mungkip | kafuŋ | | | McElhanon and Voorhoeve (1970) | arm |
