| mej | | Meyah | E,
E,
Meax | 48 |
| mfe | | Morisyen | C,
French based | 48 |
| mgf | | Maklew | Yelmek-Maklew | 64 |
| mhd | | Mbugu (Normal Dialect) | M,
Bantu-Cushitic | 44 |
| mhd | | Mbugu (Inner Dialect) | M,
Bantu-Cushitic | 44 |
| mhl | | Mauwake | T,
M,
C,
P,
Kumilan | 213 |
| mht | | Mandahuaca | | 48 |
| mij | | Mungbam (Munken Dialect) | N,
A,
V,
B,
B,
S,
Yemne-Kimbi | 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 |
| miq | | Miskito | M,
Mískito | 0 |
| mkd | | Macedonian | I,
S,
S,
Eastern | 76 |
| mkn | | Malay (Kupang Dialect) | Austronesian | 48 |
| mkn | | Kupang Malay | A,
M,
M,
M,
Malay | 48 |
| mkv | | Mavea | S,
North Vanuatu sub-group. | 48 |
| mkv | | Mafea | A,
M,
C,
E,
O,
C,
R,
N,
N,
West Santo | 115 |
| mky | | East Makian (Waikyon Dialect) | A,
M,
C,
E,
S,
S,
East Makian-Gane | 48 |
| mkz | | Makalero | T,
Timor | 121 |
| mlu | | Toqabaqita | A,
M,
C,
E,
O,
C,
S,
M,
M,
Northern | 125 |
| mnb | | Muna | A,
M,
C,
E,
S,
M,
N,
M,
M,
Western | 88 |
| mnc | | Manchu | A,
T,
S,
Southwest | 48 |
| mnx | | Manikion | E,
E,
Mantion | 48 |
| mot | | Bari | C,
C,
M,
Southern Magdalenic | 48 |
| mpb | | Malak-Malak | A,
Northern Daly | 76 |
| mpc | | Mangarayi | A,
G,
Mangarayic | 48 |
| mpj | | Wangkajunga | A,
P,
W,
N,
D,
Wati | 76 |
| mpj | | Yulparija | A,
P,
W,
N,
D,
Wati | 76 |
| mpt | | Mian | T,
O,
O,
Mountain | 395 |
| mql | | Mbelimbe | N,
A,
V,
N,
G,
C,
N,
O,
Eastern | 48 |
| mri | | Maori | A,
M,
C,
E,
O,
C,
R,
C,
E,
P,
N,
E,
C,
Tahitic | 48 |
| mrq | | North Marquesan | A,
M,
C,
E,
O,
C,
R,
C,
E,
P,
N,
E,
C,
Marquesic | 48 |
| mso | | Mombum | T,
Mombum | 48 |
| msw | | Sua | N,
A,
A,
S,
Sua | 46 |
| mte | | Mono | A,
M,
C,
E,
O,
W,
M,
N,
S,
Mono-Uruava | 48 |
| mtj | | Moskona | E,
E,
Meax | 76 |
| mwp | | Kala Lagaw Ya | A,
P,
Northern | 76 |
| mwt | | Moken | A,
M,
Moklen | 120 |
| mxw | | Namo (Tais Dialect) | N,
Yam family | 48 |
| mzm | | Mumuye (Zing Dialect) | N,
A,
V,
N,
A,
A,
L,
M,
Mumuye | 48 |
| naf | | Nabak | T,
F,
H,
Western | 76 |
| naj | | Nalu | N,
A,
A,
N,
Mbulungish-Nalu | 44 |
| nak | | Nakanai | A,
M,
C,
E,
O,
W,
M,
Willaumez | 44 |
| nam | | Ngankikurungkurr | A,
South Daly | 76 |
| nas | | Naasioi | S,
Nasioi | 36 |
| naw | | Nawuri | N,
A,
V,
K,
N,
P,
T,
G,
North Guang | 48 |
| nbb | | Ndoe | N,
A,
V,
B,
B,
S,
Ekoid | 44 |
| nbj | | Ngarinman (Bilinara (Pilinara) Dialect) | A,
P,
S,
Ngumbin | 48 |
| ncm | | Nambu | S,
M,
Nambu | 76 |
