| 193528 | Mum | sokipu | | | Z'graggen (1980) | small |
| 258876 | Mulaha | kirigi | | | Dutton (1970) | small |
| 3393 | Mubami | goisiʔe | | | Franklin (1973) | |
| 14862 | Mountain Koiari | ese | child | | Dutton (2010) | |
| 14861 | Mountain Koiari | ese-ve | small | | Dutton (2010) | |
| 258875 | Motu | maraɣi | | | Dutton (1970) | small |
| 125197 | Mosimo | ʌtata | | | Z'graggen (1980) | small |
| 3495 | Morigi | kaina | | | Wurm (1973) | |
| 193533 | Moresada | wewe- | | | Z'graggen (1980) | small |
| 32337 | Morawa | wageha | | | SIL (1973) | |
| 29605 | Molof | fentana | | | Voorhoeve (1971) | |
| 144052 | Moere | muŋkwaŋ | | | Z'graggen (1980) | (small) |
| 144051 | Moere | kawam | | | Z'graggen (1980) | (small) |
| 3076 | Minanibai | kopaiino | | | Franklin (1973) | |
| 181093 | Migum | gʌdigtɛ | | | Z'graggen (1980) | small |
| 218237 | Migabac | qaqacne | | | SIL (1975) | |
| 218246 | Migabac | qisicne | | | SIL (1975) | |
| 144048 | Miani | mɛdɛ | | | Z'graggen (1980) | (small) |
| 90798 | Mesem | namzi | small | | McElhanon (1967) | small |
| 4807 | Menya | waanqa | | | Lloyd (1973) | |
| 4516 | Mena | kɔsimɛ | | | Franklin (1973) | |
| 4517 | Mena | kose mɛau | | | Franklin (1973) | |
| 76414 | Mbilua (Ndovele Dialect) | silo | small | | Tryon & Hackman (1983) | |
| 76618 | Mbilua | silo-ama | small | | Tryon & Hackman (1983) | |
| 76696 | Mbaniata (Lokuru Dialect) | isita | small | | Tryon & Hackman (1983) | |
| 76969 | Mbaniata | isita | small | | Tryon & Hackman (1983) | |
| 77947 | Maybrat | hpuoh | | | Dol (2007) | |
| 77923 | Maybrat | kiniah | | | Dol (2007) | |
| 125205 | Mawan | nʌːgri | | | Z'graggen (1980) | small |
| 144055 | Mawak | fiwatiat | | | Z'graggen (1980) | (small) |
| 144054 | Mawak | sɛsa | | | Z'graggen (1980) | (small) |
| 144049 | Mauwake | gilɛmutʌ | | | Z'graggen (1980) | (small) |
| 125208 | Matepi | nagarup | | | Z'graggen (1980) | small |
| 125207 | Matepi | nʌg | | | Z'graggen (1980) | small |
| 258873 | Maria | ˈeiʔa | | | Dutton (1970) | small |
| 258870 | Maria (Uderi Dialect) | ʔoiʔe | | | Dutton (1970) | small |
| 258868 | Maria (Maranomu Dialect) | ˈmida | | | Dutton (1970) | small |
| 258867 | Maria (Maranomu Dialect) | ˈeiʔa | | | Dutton (1970) | small |
| 258865 | Maria (Maiagolo Dialect) | ʔoiʔa | | | Dutton (1970) | small |
| 90804 | Mape | mendakne | small | | McElhanon (1967) | small |
| 29522 | Manem | ntopa | | | Voorhoeve (1971) | |
| 231468 | Mandobo Atas (Kwem Dialect) | beron | | | Healey (1970) | |
| 231283 | Mandobo Atas | beron | | | Healey (1970) | |
| 233218 | Mali (Makunga Dialect) | lɛlka | | | SIL (1985) | |
| 233116 | Mali (Arambum Dialect) | ilɛlǥa | | | SIL (1985) | |
| 181114 | Male | kanɛːŋga | | | Z'graggen (1980) | small |
| 144041 | Malas | kuliŋ | | | Z'graggen (1980) | (small) |
| 144045 | Mala | wɛila | | | Z'graggen (1980) | (small) |
| 36377 | Makasae | ka'ʔulai (O) kiikilai | | | Stokhof (1975) | |
| 221209 | Maiwa | 'kʰitʰu | | | SIL (1973) | |
