| skf | | Mekens-ICR-WB | | 48 |
| sim | | Mende | S,
Nukuma | 48 |
| mcr | | Menya | T,
A,
Nuclear Angan | 76 |
| ulk | | Meriam | Eastern Trans-Fly | 48 |
| wtm | | Mewati | I,
I,
I,
C,
Unclassified | 48 |
| mej | | Meyah | E,
E,
Meax | 48 |
| mpt | | Mian | T,
O,
O,
Mountain | 395 |
| xxm | | Minkin | A,
Tangkic | 0 |
| miq | | Miskito | M,
Mískito | 0 |
| heb | | Modern Hebrew | A,
S,
C,
S,
Canaanite | 48 |
| mwt | | Moken | A,
M,
Moklen | 120 |
| mso | | Mombum | T,
Mombum | 48 |
| khk | | Mongolian (Halh Dialect) | M,
E,
O,
K,
Mongolian Proper | 48 |
| mte | | Mono | A,
M,
C,
E,
O,
W,
M,
N,
S,
Mono-Uruava | 48 |
| mfe | | Morisyen | C,
French based | 48 |
| ary | | Moroccan Arabic | A,
S,
C,
S,
Arabic | 48 |
| mtj | | Moskona | E,
E,
Meax | 76 |
| awg | | Mpakwithi | P,
P,
N,
N,
Anguthimri | 48 |
| akc | | Mpur | N,
Isolate | 48 |
| aoj | | Mufian | T,
K,
Arapesh | 48 |
| bmr | | Muinane | | 48 |
| mzm | | Mumuye (Zing Dialect) | N,
A,
V,
N,
A,
A,
L,
M,
Mumuye | 48 |
| mnb | | Muna | A,
M,
C,
E,
S,
M,
N,
M,
M,
Western | 88 |
| unr | | Mundari-ICR-KQ | A,
M,
N,
K,
M,
Ho-Mundari | 48 |
| unr | | Mundari-ICR-LB | H,
M,
K,
N,
M,
Austroasiatic | 48 |
| unr | | Mundari_ICR_TCC | A,
M,
N,
K,
Mundari | 48 |
| mij | | Mungbam (Ngun Dialect) | N,
A,
V,
B,
B,
S,
Yemne-Kimbi | 48 |
| mij | | Mungbam (Abar Dialect) | N,
A,
V,
B,
B,
S,
Yemne-Kimbi | 47 |
| mij | | Mungbam (Biya Dialect) | N,
A,
V,
B,
B,
S,
Yemne-Kimbi | 48 |
| mij | | Mungbam (Missong Dialect) | N,
A,
V,
B,
B,
S,
Yemne-Kimbi | 47 |
| mij | | Mungbam (Munken Dialect) | N,
A,
V,
B,
B,
S,
Yemne-Kimbi | 48 |
| huu | | Murui Huitoto | | 48 |
| zmu | | Muruwari | A,
P,
S,
New South Wales | 76 |
| emi | | Mussau-Emira | A,
M,
C,
E,
O,
St. Matthias | 82 |
