| wyb | | Ngiyambaa | A,
P,
S,
New South Wales | 109 |
| xaw | | Kawaiisu | U,
N,
N,
Southern | 48 |
| xbg | | Bunganditj | A,
P,
S,
Victorian | 71 |
| xbi | | Kombio | T,
K,
Kombio | 48 |
| xin | | Xinca-Guazacapan | Xincan | 0 |
| xin | | Xinca-Jumaytepeque | Xincan | 0 |
| xin | | Xinca-Chiquimulilla | Xincan | 0 |
| xin | | Xinca-Yupiltepeque | Xinca | 0 |
| xkz | | Kurtöp | S,
T,
W,
B,
E,
Bumthang | 28 |
| xla | | Kamula | T,
Kamula | 48 |
| xmm | | Malay (Manado Dialect) | Austronesian | 48 |
| xod | | Kokoda | T,
S,
S,
Central | 48 |
| xrb | | Karaboro, Eastern | N,
A,
V,
N,
G,
S,
Karaboro | 48 |
| xwa | | Kwaza | Language isolate | 48 |
| xxk | | Keo (Udiworowatu Dialect) | Central-Malayo-Polynesian | 84 |
| xxm | | Minkin | A,
Tangkic | 0 |
| xyy | | Yorta Yorta | A,
P,
S,
Victorian | 76 |
| yab | | Yuhup | | 48 |
| yad | | Yagua | Peba-Yaguan | 48 |
| yan | | Mayangna | M,
S,
Sumuic | 0 |
| yau | | Yuwana | | 47 |
| ycn | | Yucuna | | 48 |
| yee | | Yimas | R,
L,
Karawari | 48 |
| yey | | Yeyi | N,
A,
V,
B,
B,
S,
N,
C,
R,
Yeyi (R.41) | 48 |
| ygr | | Yagaria | T,
K,
G,
Kamano-Yagaria | 76 |
| yii | yidi1250 | Yidiny | | 48 |
| yij | | Yindjibarndi | A,
P,
W,
N,
S,
Pilbara | 76 |
| yiy | yiry1245 | Yir-Yoront | | 48 |
| ylr | | Yalarnnga | A,
P,
N,
Kalkatungic | 75 |
| yma | | Yanomama | Yanoman; Ninam–Yanomam-Yaroame; Yanomamɨ | 36 |
| ymk | | Makwe | N,
A,
V,
B,
B,
S,
N,
C,
G,
Swahili (G.402) | 48 |
| yor | | Yoruba | N,
A,
V,
B,
D,
Y,
Edekiri | 48 |
| yss | | Yessan-Mayo | S,
Tama | 48 |
| yue | | Cantonese | S,
Chinese | 96 |
| yui | | Yurutí | | 48 |
| yup | | Yukpa | | 48 |
| zlm | | Malay | A,
M,
M,
M,
Malay | 48 |
| zmr | | Maranunggu | A,
Western Daly | 76 |
| zmu | | Muruwari | A,
P,
S,
New South Wales | 76 |
| zne | | Zande | N,
A,
V,
N,
A,
U,
Z,
Zande-Nzakara | 48 |
| zul | | Zulu | N,
A,
V,
B,
B,
S,
N,
C,
S,
Nguni (S.42) | 48 |
| | Kuuk Thaayorre | | 48 |
| | Bukawa | Austronesian | 48 |
| | Dre | N,
Yam Family | 48 |
| | Letyi-Lejti | A,
Kulin | 13 |
| | Welsh-ICR-NE | B,
C,
I,
indo-European | 96 |
| | Komnzo | Yam Family; Tonda Branch | 76 |
| | Kuuku Ya'u | | 48 |
| | Wati-Wati | A,
Kulin | 36 |
| | Malay (Alor Dialect) | Austronesian | 48 |
