U - Z
| Englische Sprachbezeichnung | Deutsche Sprachbezeichnung | 639.2 | 639.1 |
|---|---|---|---|
| Udmurt | Udmurtisch | udm | |
| Ugaritic | Ugaritisch | uga | |
| Uighur; Uyghur | Uigurisch | uig | ug |
| Ukrainian | Ukrainisch | ukr | uk |
| Umbundu | Mbundu-Sprache | umb | |
| Uncoded languages | mis | ||
| Undetermined | Nicht einzuordnen | und | |
| Upper Sorbian | Obersorbisch | hsb | |
| Urdu | Urdu | urd | ur |
| Uyghur; Uighur | Uigurisch | uig | ug |
| Uzbek | Usbekisch | uzb | uz |
| Vai | Vai-Sprache | vai | |
| Valencian; Catalan | Katalanisch | cat | ca |
| Venda | Venda-Sprache | ven | ve |
| Vietnamese | Vietnamesisch | vie | vi |
| Volapük | Volapük | vol | vo |
| Votic | Wotisch | vot | |
| Wakashan languages | Wakash-Sprachen | wak | |
| Walloon | Wallonisch | wln | wa |
| Waray | Waray | war | |
| Washo | Washo-Sprache | was | |
| Welsh | Kymrisch | wel/cym | cy |
| Western Frisian | Friesisch | fry | fy |
| Wolaitta; Wolaytta | Walamo-Sprache | wal | |
| Wolof | Wolof-Sprache | wol | wo |
| Xhosa | Xhosa-Sprache | xho | xh |
| Yakut | Jakutisch | sah | |
| Yao | Yao-Sprache (Bantusprache) | yao | |
| Yapese | Yapesisch | yap | |
| Yiddish | Jiddisch | yid | yi |
| Yoruba | Yoruba-Sprache | yor | yo |
| Yupik languages | Yupik-Sprache | ypk | |
| Zande languages | Zande-Sprachen | znd | |
| Zapotec | Zapotekisch | zap | |
| Zaza; Dimili; Dimli; Kirdki; Kirmanjki; Zazaki | zza | ||
| Zenaga | Zenaga | zen | |
| Zhuang; Chuang | Zhuang | zha | za |
| Zulu | Zulu-Sprache | zul | zu |
| Zuni | Zuni-Sprache | zun |