| lgt | pahi1246 | Pahi | S,
S,
Mehek-Pahi | 37 |
| lsr | aruo1240 | Aruop | N,
W,
C,
N,
Bragat-Aruop-Amol | 43 |
| lvk | lavu1241 | Lavukaleve | Central Solomons | 211 |
| mci | mese1244 | Mesem | N,
F,
H,
W,
R,
Sankwep | 192 |
| mcq | esee1247 | Ese | K,
Baraic | 178 |
| mcr | meny1245 | Menya | A,
N,
Kapau-Menya | 103 |
| mcv | mina1274 | Minanibai | A,
I,
West Inland Gulf of Papua | 99 |
| mcz | mawa1267 | Mawan | N,
M,
C,
M,
H,
Silopic | 363 |
| mdb | mori1271 | Morigi | K,
Turama-Kerewo | 99 |
| mdc | male1291 | Male | N,
M,
R,
M,
L,
Inland Minjim | 320 |
| mds | mari1438 | Maria (Maranomu Dialect) | Manubaran | 272 |
| mds | uder1239 | Maria (Uderi Dialect) | M,
Maria (Papua New Guinea) | 179 |
| mds | mari1438 | Maria (Maiagolo Dialect) | Manubaran | 264 |
| mds | mari1438 | Maria | Manubaran | 195 |
| meb | mena1240 | Ikobi-Mena | T,
T,
Ikobi | 103 |
| meb | mena1240 | Mena | T,
T,
Ikobi | 111 |
| mej | meya1236 | Meyah (Anason Dialect) | E,
Meax | 40 |
| mej | meya1236 | Meyah | E,
Meax | 39 |
| mej | meya1236 | Meyah (Etskebi Dialect) | E,
Meax | 39 |
| mej | meya1236 | Meyah (Miun Dialect) | E,
Meax | 40 |
| mej | meya1236 | Meyah (Mumbrani Dialect) | E,
Meax | 41 |
| mej | meya1236 | Meyah (Akrin Dialect) | E,
Meax | 40 |
| meu | motu1246 | Motu | A,
M,
E,
O,
W,
P,
P,
C,
West Central Papuan linkage | 280 |
| mfw | mula1254 | Mulaha | Kwalean | 150 |
| mgf | makl1246 | Maklew | Bulaka River | 41 |
| mgk | mawe1251 | Mawes | T,
G,
Mawes | 39 |
| mgu | baib1249 | Mailu (Baibara Dialect) | M,
Mailu | 273 |
| mgu | isla1273 | Mailu (Island Dialect) | M,
Mailu | 273 |
| mgu | dara1252 | Mailu (Darava Dialect) | M,
Mailu | 273 |
| mgu | dere1243 | Mailu (Delebai Dialect) | M,
Mailu | 273 |
| mgu | bore1246 | Mailu (Borebo Dialect) | M,
Mailu | 273 |
| mgu | ilai1239 | Mailu (Ilai Dialect) | M,
Mailu | 273 |
| mgu | geag1239 | Mailu (Geagea Dialect) | M,
Mailu | 273 |
| mgu | mail1248 | Mailu | Mailuan | 243 |
| mgu | asia1264 | Mailu (Asiaoro Dialect) | M,
Mailu | 273 |
| mgu | doma1262 | Mailu (Domara Dialect) | M,
Mailu | 273 |
| mhf | mama1277 | Mamaa | N,
F,
F,
E,
Finungwan-Mamaa-Gusan | 55 |
| mhl | mauw1238 | Mauwake | N,
M,
C,
G,
N,
K,
Kumil | 341 |
| mhz | morm1235 | Mor (Austronesian) | A,
M,
E,
South Halmahera-West New Guinea | 52 |
| miw | akoy1238 | Akoye | A,
N,
A,
Tainae-Akoye | 105 |
| mjj | mawa1266 | Mawak | N,
M,
C,
G,
N,
K,
T,
Nuclear Tibor | 346 |
| mkc | sili1247 | Siliput | T,
M,
Maimai Proper | 44 |
| mkr | mala1495 | Manep | N,
M,
C,
G,
N,
Manep-Barem | 20 |
| mkr | mala1495 | Malas | N,
M,
C,
G,
N,
Manep-Barem | 328 |
| mkz | maka1316 | Makasae | T,
East Timor | 100 |
| mle | mana1298 | Manambu | N,
N,
Manambu-Yalaku | 43 |
| mlh | mape1249 | Mape | N,
F,
H,
E,
T,
H,
Kate-Mape | 140 |
| mlh | mape1249 | Mape (East Dialect) | N,
F,
H,
E,
T,
H,
Kate-Mape | 48 |
| mlh | mape1249 | Mape (West Dialect) | N,
F,
H,
E,
T,
H,
Kate-Mape | 53 |
| mlh | niga1243 | Mape (Naga Dialect) | N,
F,
H,
E,
T,
H,
K,
Mape | 54 |
