| mej | meya1236 | Meyah (Miun Dialect) | E,
Meax | 40 |
| mci | mese1244 | Mesem | N,
F,
H,
W,
R,
Sankwep | 192 |
| ulk | meri1244 | Meriam | Eastern Trans-Fly | 0 |
| mcr | meny1245 | Menya | A,
N,
Kapau-Menya | 103 |
| sim | mend1268 | Mende | S,
N,
Kwanga-Mende | 46 |
| meb | mena1240 | Mena | T,
T,
Ikobi | 111 |
| msf | mekw1241 | Mekwei | N,
Outer Nimboranic | 41 |
| nux | mehe1243 | Mehek | S,
S,
Mehek-Pahi | 45 |
| gai | bore1247 | Mbore | R,
L,
Ottilien | 61 |
| blb | bilu1245 | Mbilua (Ndovele Dialect) | Central Solomons | 195 |
| blb | bilu1245 | Mbilua | Central Solomons | 213 |
| blb | bilu1245 | Mbaniata (Lokuru Dialect) | Central Solomons | 205 |
| tqu | touo1238 | Mbaniata | Central Solomons | 242 |
| ayz | maib1239 | Maybrat | W,
Maybrat | 228 |
| slz | maya1282 | Ma'ya | A,
M,
E,
S,
R,
M,
Raja Ampat Maya | 22 |
| mgk | mawe1251 | Mawes | T,
G,
Mawes | 39 |
| mcz | mawa1267 | Mawan | N,
M,
C,
M,
H,
Silopic | 363 |
| mjj | mawa1266 | Mawak | N,
M,
C,
G,
N,
K,
T,
Nuclear Tibor | 346 |
| mhl | mauw1238 | Mauwake | N,
M,
C,
G,
N,
K,
Kumil | 341 |
| mqe | mate1260 | Matepi | N,
M,
C,
M,
H,
Unclassified Hanseman | 360 |
| bpv | bian1251 | Marind, Bian | A,
M,
Marindic | 42 |
| mrz | nucl1622 | Marind | A,
M,
Marindic | 40 |
| mrz | gawi1240 | Marind (Gawir Dialect) | A,
M,
M,
M,
Coastal Marind | 52 |
| mds | uder1239 | Maria (Uderi Dialect) | M,
Maria (Papua New Guinea) | 179 |
| mds | mari1438 | Maria (Maranomu Dialect) | Manubaran | 272 |
| mds | mari1438 | Maria | Manubaran | 195 |
| mds | mari1438 | Maria (Maiagolo Dialect) | Manubaran | 264 |
| mvr | mara1397 | Marau | A,
M,
E,
S,
C,
Y,
C,
Ansus-Ambai | 18 |
| wax | wata1253 | Marangis | R,
L,
O,
Watam-Kaian | 65 |
| 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 | niga1243 | Mape (Naga Dialect) | N,
F,
H,
E,
T,
H,
K,
Mape | 54 |
| mlh | mape1249 | Mape (West Dialect) | N,
F,
H,
E,
T,
H,
Kate-Mape | 53 |
| mans1260 | Mansim | Hatam-Mansim | 12 |
| mnx | mani1235 | Manikion | East Bird's Head | 42 |
| mkr | mala1495 | Manep | N,
M,
C,
G,
N,
Manep-Barem | 20 |
| jet | mane1266 | Manem | B,
W,
Nuclear Warisic | 141 |
| aax | mand1444 | Mandobo Atas (Yonggom Dialect) | N,
A,
A,
G,
A,
D,
Mandobo | 82 |
| aax | mand1444 | Mandobo Atas (Kwem Dialect) | N,
A,
A,
G,
A,
D,
Mandobo | 184 |
| aax | mand1444 | Mandobo Atas | N,
A,
A,
G,
A,
D,
Mandobo | 367 |
| mqr | mand1443 | Mander | T,
Tor | 37 |
| payn1244 | Manat | N,
M,
K,
S,
S,
A,
Greater West Sogeram | 46 |
| mle | mana1298 | Manambu | N,
N,
Manambu-Yalaku | 43 |
| skc | sauk1252 | Ma Manda | N,
F,
F,
E,
Sauk-Nimi | 53 |
| mhf | mama1277 | Mamaa | N,
F,
F,
E,
Finungwan-Mamaa-Gusan | 55 |
| gcc | mali1284 | Mali (Makunga Dialect) | Baining | 116 |
| gcc | mali1284 | Mali (Arambum Dialect) | Baining | 102 |
| mdc | male1291 | Male | N,
M,
R,
M,
L,
Inland Minjim | 320 |
| mkr | mala1495 | Malas | N,
M,
C,
G,
N,
Manep-Barem | 328 |
| ped | mala1494 | Mala | N,
M,
C,
G,
N,
Kaukombaran | 347 |
