| 87721 | Mailu (Geagea Dialect) | goigoibo | | | Thomson (1975) | |
| 86351 | Mailu (Ilai Dialect) | goigoibo | | | Thomson (1975) | |
| 86625 | Mailu (Island Dialect) | goigoibo | | | Thomson (1975) | |
| 221242 | Maiwa | no'nɛn magawa | | | SIL (1973) | |
| 140612 | Mala | -gom apasu | | | Z'graggen (1980) | (heart) |
| 140608 | Malas | mutukunaŋ | | | Z'graggen (1980) | (heart) |
| 177617 | Male | pari | | | Z'graggen (1980) | heart |
| 201359 | Mandobo Atas | dümɑrop | | | Voorhoeve (2000) | |
| 231297 | Mandobo Atas | dümarop | | | Healey (1970) | |
| 231481 | Mandobo Atas (Kwem Dialect) | dümarop | | | Healey (1970) | |
| 201442 | Mandobo Atas (Yonggom Dialect) | dimdop | | | Voorhoeve (2000) | |
| 29494 | Manem | porfor | | | Voorhoeve (1971) | |
| 261236 | Manep | gaman | | | Pick (2019) | heart |
| 90902 | Mape | maki kâruŋ- | (its) heart | | McElhanon (1967) | (its) heart |
| 257944 | Maria (Maiagolo Dialect) | oˈhoʔa | | | Dutton (1970) | heart |
| 257946 | Maria (Maranomu Dialect) | oˈhaʔa | | | Dutton (1970) | heart |
| 257948 | Maria (Uderi Dialect) | oˈhoʔa ˈmeʔo | | | Dutton (1970) | heart |
| 257951 | Maria | oˈhoʔa | | | Dutton (1970) | heart |
| 140616 | Mauwake | kema manɛka | | | Z'graggen (1980) | (heart) |
| 140620 | Mawak | ʌporʰʌ | | | Z'graggen (1980) | (heart) |
| 121340 | Mawan | ga- papuaya | | | Z'graggen (1980) | heart |
| 252 | Mena | kʌmuu | | | Franklin (1973) | |
| 4780 | Menya | kameqwa | | | Lloyd (1973) | |
| 90896 | Mesem | wembə kət- | (its) heart | | McElhanon (1967) | (its) heart |
| 196674 | Mian | bobol | | | Loughnane and Fedden (2011) | |
| 140615 | Miani | uwaᵬ | | | Z'graggen (1980) | (heart) |
| 218276 | Migabac | huŋnoŋgeŋ | | | SIL (1975) | |
| 177602 | Migum | tutui | | | Z'graggen (1980) | heart |
| 3049 | Minanibai | guguwao | | | Franklin (1973) | |
| 140618 | Moere | (mu)mun | | | Z'graggen (1980) | (heart) |
| 6279 | Moni (Kemandoga Dialect) | dukumudu | | | Larson & Larson (1972) | |
| 191555 | Moresada | -ŋumun | | | Z'graggen (1980) | heart |
| 3468 | Morigi | beru | | | Wurm (1973) | |
| 121336 | Mosimo | kevele- | | | Z'graggen (1980) | heart |
| 257953 | Motu | kudou- | | | Dutton (1970) | heart |
| 27428 | Mubami | sosolo | | | Reesink (1976) | |
| 27429 | Mubami | muʔi | | | Reesink (1976) | |
| 3366 | Mubami | bita | | | Franklin (1973) | |
| 257954 | Mulaha | sowa | | | Dutton (1970) | heart |
| 191551 | Mum | kusiŋə | | | Z'graggen (1980) | heart |
| 121322 | Munit | putputi- | | | Z'graggen (1980) | heart |
| 121333 | Murupi | ɔrʌ | | | Z'graggen (1980) | heart |
| 191560 | Musak | kubugusur | | | Z'graggen (1980) | heart |
| 140622 | Musar | ɛmbɛ kaluka | | | Z'graggen (1980) | (heart) |
| 90907 | Nabak | gum kət- | (its) heart | | McElhanon (1967) | (its) heart |
| 29130 | Nabi | akemok | | | Voorhoeve (1971) | |
| 197784 | Nagatiman | yakuʔ | | | Conrad and Dye (1975) | |
| 121335 | Nake | gam- | | | Z'graggen (1980) | heart |
| 191558 | Nend | zɨŋ | | | Z'graggen (1980) | heart |
| 198221 | Nimo | mʌři | | | Conrad and Dye (1975) | |
