ISO 639:u

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|uam || || ||B ||Ö ||Uamué||&nbsp;
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|uan || || ||B ||Y ||Kuan||&nbsp;
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|uar || || ||B ||Y ||Tairuma||&nbsp;
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|uba || || ||B ||Y ||Ubang||&nbsp;
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|ubi || || ||B ||Y ||Ubi||&nbsp;
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|ubm || || ||B ||Y ||Kenyah, Upper Baram||&nbsp;
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|ubr || || ||B ||Y ||Ubir||&nbsp;
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|ubu || || ||B ||Y ||Umbu-Ungu||&nbsp;
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|uby || || ||B ||Ö ||Ubykh||&nbsp;
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|uda || || ||B ||Y ||Uda||&nbsp;
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|ude || || ||B ||Y ||Udihe||&nbsp;
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|udi || || ||B ||Y ||Udi||&nbsp;
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|udj || || ||B ||Y ||Ujir||&nbsp;
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|udl || || ||B ||Y ||Wuzlam||&nbsp;
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|udm ||udm || ||B ||Y ||Udmurt||&nbsp;
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|udu || || ||B ||Y ||Uduk||&nbsp;
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|ues || || ||B ||Y ||Kioko||&nbsp;
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|ufi || || ||B ||Y ||Ufim||&nbsp;
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|uga ||uga || ||B ||A ||Ugaritic||&nbsp;
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|ugb || || ||B ||Y ||Kuku-Ugbanh||&nbsp;
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|uge || || ||B ||Y ||Ughele||&nbsp;
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|ugn || || ||B ||Y ||Ugandan Sign Language||&nbsp;
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|ugo || || ||B ||Y ||Ugong||&nbsp;
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|ugy || || ||B ||Y ||Uruguayan Sign Language||&nbsp;
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|uha || || ||B ||Y ||Uhami||&nbsp;
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|uhn || || ||B ||Y ||Damal||&nbsp;
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|uig ||uig ||ug ||B ||Y ||Uighur||&nbsp;
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|uis || || ||B ||Y ||Uisai||&nbsp;
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|uiv || || ||B ||Y ||Iyive||&nbsp;
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|uji || || ||B ||Y ||Tanjijili||&nbsp;
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|uka || || ||B ||Y ||Kaburi||&nbsp;
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|ukg || || ||B ||Y ||Ukuriguma||&nbsp;
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|ukh || || ||B ||Y ||Ukhwejo||&nbsp;
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|ukl || || ||B ||Y ||Ukrainian Sign Language||&nbsp;
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|ukp || || ||B ||Y ||Ukpe-Bayobiri||&nbsp;
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|ukq || || ||B ||Y ||Ukwa||&nbsp;
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|ukr ||ukr ||uk ||B ||Y ||Ukrainian||&nbsp;
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|uks || || ||B ||Y ||Urubú-Kaapor Sign Language||&nbsp;
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|uku || || ||B ||Y ||Ukue||&nbsp;
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|ukw || || ||B ||Y ||Ukwuani-Aboh-Ndoni||&nbsp;
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|ula || || ||B ||Y ||Fungwa||&nbsp;
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|ulb || || ||B ||Y ||Ulukwumi||&nbsp;
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|ulc || || ||B ||Y ||Ulch||&nbsp;
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|ulf || || ||B ||Y ||Usku||&nbsp;
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|uli || || ||B ||Y ||Ulithian||&nbsp;
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|ulk || || ||B ||Y ||Meriam||&nbsp;
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|ull || || ||B ||Y ||Ullatan||&nbsp;
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|ulm || || ||B ||Y ||Ulumanda'||&nbsp;
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|uln || || ||B ||Y ||Unserdeutsch||&nbsp;
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|uma || || ||B ||Y ||Umatilla||&nbsp;
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|umb ||umb || ||B ||Y ||Umbundu||&nbsp;
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|umc || || ||B ||A ||Marrucinian||&nbsp;
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|umd || || ||B ||Y ||Umbindhamu||&nbsp;
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|umg || || ||B ||Y ||Umbuygamu||&nbsp;
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|umi || || ||B ||Y ||Ukit||&nbsp;
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|umm || || ||B ||Y ||Umon||&nbsp;
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|umo || || ||B ||Ö ||Umotína||&nbsp;
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|ump || || ||B ||Y ||Umpila||&nbsp;
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|umr || || ||B ||Y ||Umbugarla||&nbsp;
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|ums || || ||B ||Y ||Pendau||&nbsp;
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|umu || || ||B ||Y ||Munsee||&nbsp;
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|una || || ||B ||Y ||Watut, North||&nbsp;
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|und ||und || ||Z ||Z ||Undetermined||&nbsp;
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|une || || ||B ||Y ||Uneme||&nbsp;
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|ung || || ||B ||Y ||Ngarinyin||&nbsp;
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|unk || || ||B ||Y ||Enawené-Nawé||&nbsp;
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|unm || || ||B ||Ö ||Unami||&nbsp;
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|unp || || ||B ||Y ||Worora||&nbsp;
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|unz || || ||B ||Y ||Kaili, Unde||&nbsp;
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|uok || || ||B ||Y ||Uokha||&nbsp;
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|upi || || ||B ||Y ||Umeda||&nbsp;
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|upv || || ||B ||Y ||Uripiv-Wala-Rano-Atchin||&nbsp;
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|ura || || ||B ||Y ||Urarina||&nbsp;
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|urb || || ||B ||Y ||Urubú-Kaapor||&nbsp;
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|urc || || ||B ||Y ||Urningangg||&nbsp;
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|urd ||urd ||ur ||B ||Y ||Urdu||&nbsp;
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|ure || || ||B ||Y ||Uru||&nbsp;
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|urf || || ||B ||Y ||Uradhi||&nbsp;
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|urg || || ||B ||Y ||Urigina||&nbsp;
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|urh || || ||B ||Y ||Urhobo||&nbsp;
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|uri || || ||B ||Y ||Urim||&nbsp;
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|urk || || ||B ||Y ||Urak Lawoi'||&nbsp;
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|url || || ||B ||Y ||Urali||&nbsp;
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|urm || || ||B ||Y ||Urapmin||&nbsp;
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|urn || || ||B ||Y ||Uruangnirin||&nbsp;
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|uro || || ||B ||Y ||Ura (Papua New Guinea)||&nbsp;
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|urp || || ||B ||Y ||Uru-Pa-In||&nbsp;
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|urr || || ||B ||Y ||Lehalurup||&nbsp;
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|urt || || ||B ||Y ||Urat||&nbsp;
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|uru || || ||B ||Ö ||Urumi||&nbsp;
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|urv || || ||B ||Ö ||Uruava||&nbsp;
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|urw || || ||B ||Y ||Sop||&nbsp;
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|urx || || ||B ||Y ||Urimo||&nbsp;
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|ury || || ||B ||Y ||Orya||&nbsp;
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|urz || || ||B ||Y ||Uru-Eu-Wau-Wau||&nbsp;
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|usa || || ||B ||Y ||Usarufa||&nbsp;
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|ush || || ||B ||Y ||Ushojo||&nbsp;
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|usi || || ||B ||Y ||Usui||&nbsp;
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|usk || || ||B ||Y ||Usaghade||&nbsp;
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|usp || || ||B ||Y ||Uspanteco||&nbsp;
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|usu || || ||B ||Y ||Uya||&nbsp;
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|uta || || ||B ||Y ||Otank||&nbsp;
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|ute || || ||B ||Y ||Ute-Southern Paiute||&nbsp;
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|utp || || ||B ||Y ||Amba (Solomon Islands)||&nbsp;
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|utr || || ||B ||Y ||Etulo||&nbsp;
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|utu || || ||B ||Y ||Utu||&nbsp;
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|uum || || ||B ||Y ||Urum||&nbsp;
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|uun || || ||B ||Ö ||Kulon-Pazeh||&nbsp;
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|uur || || ||B ||Y ||Ura (Vanuatu)||&nbsp;
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|uuu || || ||B ||Y ||U||&nbsp;
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|uve || || ||B ||Y ||Uvean, West||&nbsp;
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|uvh || || ||B ||Y ||Uri||&nbsp;
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|uvl || || ||B ||Y ||Lote||&nbsp;
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|uwa || || ||B ||Y ||Kuku-Uwanh||&nbsp;
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|uya || || ||B ||Y ||Doko-Uyanga||&nbsp;
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|uzb ||uzb ||uz ||M ||Y ||Uzbek||&nbsp;
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|uzn || || ||B ||Y ||Uzbek, Northern||&nbsp;
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|uzs || || ||B ||Y ||Uzbek, Southern||&nbsp;
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