| | Magɨ | T,
M,
S,
W,
Emuan | 85 |
| payn1244 | Manat | N,
M,
K,
S,
S,
A,
Greater West Sogeram | 46 |
| aax | mand1444 | Mandobo Atas | N,
A,
A,
G,
A,
D,
Mandobo | 367 |
| 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 |
| akc | mpur1239 | Mpur (Arfu Dialect) | Language isolate | 40 |
| akc | mpur1239 | Mpur (Kebar Dialect) | Language isolate | 52 |
| akc | mpur1239 | Mpur | Language isolate | 82 |
| asx | mura1271 | Muratayak | N,
F,
F,
W,
Nuclear Warup | 52 |
| aup | maka1315 | Makayam | A,
T,
Nuclear Tirio | 0 |
| ayz | maib1239 | Mai Brat | Maybrat | 41 |
| ayz | maib1239 | Maybrat | W,
Maybrat | 228 |
| blb | bilu1245 | Mbilua | Central Solomons | 213 |
| blb | bilu1245 | Mbaniata (Lokuru Dialect) | Central Solomons | 205 |
| blb | bilu1245 | Mbilua (Ndovele Dialect) | Central Solomons | 195 |
| bpv | bian1251 | Marind, Bian | A,
M,
Marindic | 42 |
| gai | bore1247 | Mbore | R,
L,
Ottilien | 61 |
| gcc | mali1284 | Mali (Arambum Dialect) | Baining | 102 |
| gcc | mali1284 | Mali (Makunga Dialect) | Baining | 116 |
| grg | madi1261 | Madi | N,
F,
F,
G,
Gira-Neko-Nekgini | 57 |
| jet | mane1266 | Manem | B,
W,
Nuclear Warisic | 141 |
| kja | mlap1238 | Mlap | N,
O,
Mlap-Gresi-Kemtuik | 40 |
| klm | kolo1267 | Migum | N,
M,
R,
Kabenau | 300 |
| kpx | moun1252 | Mountain Koiari | K,
K,
Biage-Mountain Koiali | 185 |
| kqa | mumm1238 | Mum | N,
M,
K,
S,
S,
North Sogeram | 419 |
| kti | nort2916 | Muyu, North | N,
A,
A,
O,
O,
L,
Division A Lowland Ok | 102 |
| kts | sout2940 | Muyu, South | N,
A,
A,
O,
O,
L,
Division A Lowland Ok | 100 |
| mci | mese1244 | Mesem | N,
F,
H,
W,
R,
Sankwep | 192 |
| 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 | Manubaran | 195 |
| mds | mari1438 | Maria (Maranomu Dialect) | Manubaran | 272 |
| mds | mari1438 | Maria (Maiagolo Dialect) | Manubaran | 264 |
| mds | uder1239 | Maria (Uderi Dialect) | M,
Maria (Papua New Guinea) | 179 |
| meb | mena1240 | Mena | T,
T,
Ikobi | 111 |
| mej | meya1236 | Meyah (Miun Dialect) | E,
Meax | 40 |
| mej | meya1236 | Meyah (Anason Dialect) | E,
Meax | 40 |
| mej | meya1236 | Meyah | E,
Meax | 39 |
| mej | meya1236 | Meyah (Mumbrani Dialect) | E,
Meax | 41 |
| mej | meya1236 | Meyah (Akrin Dialect) | E,
Meax | 40 |
| mej | meya1236 | Meyah (Etskebi Dialect) | E,
Meax | 39 |
| 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 | dara1252 | Mailu (Darava Dialect) | M,
Mailu | 273 |
| mgu | mail1248 | Mailu | Mailuan | 243 |
