| 20364 | Meyah | mec | | | Voorhoeve (1975) | |
| 158772 | Mian | kim | | | McElhanon and Voorhoeve (1970) | louse |
| 141344 | Miani | ʌgu | | | Z'graggen (1980) | louse |
| 158848 | Migabac | yɔmɛŋ | | | McElhanon and Voorhoeve (1970) | louse |
| 218263 | Migabac | ʒiŋoŋ | | | SIL (1975) | |
| 218270 | Migabac | tibura | | | SIL (1975) | |
| 178359 | Migum | ŋeu | | | Z'graggen (1980) | louse |
| 3108 | Minanibai | nimo | | | Franklin (1973) | |
| 244335 | Minidien | lumum | | | Laycock (1968) | |
| 25952 | Mlap | səne | | | Voorhoeve (1975) | |
| 141347 | Moere | kuna | | | Z'graggen (1980) | louse |
| 20123 | Moi | sayam | | | Voorhoeve (1975) | |
| 19638 | Molof | lem | | | Voorhoeve (1975) | |
| 29583 | Molof | lem | | | Voorhoeve (1971) | |
| 158849 | Momare | yɔmɛŋ | | | McElhanon and Voorhoeve (1970) | louse |
| 21128 | Mombum | am | | | Voorhoeve (1975) | |
| 21522 | Momuna | amega | | | Voorhoeve (1975) | |
| 22364 | Moni | amu | | | Voorhoeve (1975) | |
| 7300 | Moni (Kemandoga Dialect) | amu | | | Larson & Larson (1972) | |
| 21803 | Mor | twoa | | | Voorhoeve (1975) | |
| 20164 | Moraid | oŋ | | | Voorhoeve (1975) | |
| 25186 | Mor (Austronesian) | kuʔa | | | Voorhoeve (1975) | |
| 32363 | Morawa | tuma | | | SIL (1973) | |
| 191990 | Moresada | imʌmp | | | Z'graggen (1980) | louse |
| 3527 | Morigi | nimo | | | Wurm (1973) | |
| 21482 | Morori | nemeŋk | | | Voorhoeve (1975) | |
| 122187 | Mosimo | mi | | | Z'graggen (1980) | louse |
| 19073 | Moskona | meyds | | | Voorhoeve (1975) | |
| 34630 | Moskona (Merdey Dialect) | mèts | | | Miedema & Welling (1985) | |
| 260135 | Motu | utu- | | | Dutton (1970) | louse |
| 14751 | Mountain Koiari | umu | louse | | Dutton (2010) | |
| 34670 | Mpur (Arfu Dialect) | i:m | | | Miedema & Welling (1985) | |
| 34710 | Mpur (Kebar Dialect) | èyim | | | Miedema & Welling (1985) | |
| 16799 | Mpur | im | | | Miedema & Welling (1985) | |
| 20284 | Mpur | iim | | | Voorhoeve (1975) | |
| 27499 | Mubami | wali (ɛmɛ) | | | Reesink (1976) | |
| 3425 | Mubami | oali | | | Franklin (1973) | |
| 260136 | Mulaha | uˈmana | | | Dutton (1970) | louse |
| 191985 | Mum | ñima | | | Z'graggen (1980) | louse |
| 82823 | Mum | ñima | | | Daniels (2010) | |
| 24986 | Munggui | utu | | | Voorhoeve (1975) | |
| 158831 | Mungkip | mi | | | McElhanon and Voorhoeve (1970) | louse |
| 198649 | Mungkip | mīŋ | | | Retsema et al. (2009) | |
| 122173 | Munit | mi | | | Z'graggen (1980) | louse |
| 158792 | Muratayak | yumun | | | McElhanon and Voorhoeve (1970) | louse |
| 240572 | Murik (Karau Dialect) | ˈnʊmbʊr̃ | | | Abbott (1985) | |
| 7848 | Murik | iran | | | Foley (1986) | |
| 122184 | Murupi | mi | | | Z'graggen (1980) | louse |
| 191995 | Musak | imu | | | Z'graggen (1980) | louse |
| 141351 | Musar | ɔ:nʌ | | | Z'graggen (1980) | louse |
