ISO 639:x

| xrn  |  |  | I/E |  |  | Arin |  |  |  |  |  |
| xrq  |  |  | I/E |  |  | Karranga |  |  |  |  |  |
| xrr  |  |  | I/A |  |  | Raetic |  |  | 列托语 |  |  |
| xrt  |  |  | I/E |  |  | Aranama-Tamique |  |  |  |  |  |
| xru  |  |  | I/L |  |  | Marriammu |  |  |  |  |  |
| xrw  |  |  | I/L |  |  | Karawa |  |  |  |  |  |
| xsa  |  |  | I/A |  |  | Sabaean |  |  | 塞巴语 |  |  |
| xsb  |  |  | I/L |  |  | Sambal, Tinà |  |  |  |  |  |
| xsc  |  |  | I/A |  |  | Scythian |  |  | 西徐亚语 |  |  |
| xsd  |  |  | I/A |  |  | Sidetic |  |  |  | сидетский |  |
| xse  |  |  | I/L |  |  | Sempan |  |  |  |  |  |
| xsh  |  |  | I/L |  |  | Shamang |  |  |  |  |  |
| xsi  |  |  | I/L |  |  | Sio |  |  |  |  |  |
| xsj  |  |  | I/L |  |  | Subi |  |  |  |  |  |
| (xsk)  |  |  |  |  |  | Sakan |  |  |  |  |  |
| xsl  |  |  | I/L |  | ᑌᓀᒐ | Slavey, South |  |  |  |  |  |
| xsm  |  |  | I/L |  |  | Kasem |  |  |  |  | Kasem |
| xsn  |  |  | I/L |  |  | Sanga (Nigeria) |  |  |  |  |  |
| xso  |  |  | I/E |  |  | Solano |  |  |  |  |  |
| xsp  |  |  | I/L |  |  | Silopi |  |  |  |  |  |
| xsq  |  |  | I/L |  |  | Makhuwa-Saka |  |  |  |  |  |
| xsr  |  |  | I/L |  |  | Sherpa | sherpa | sherpa | 夏尔巴语 |  |  |
| xss  |  |  | I/E |  |  | Assan |  |  |  |  |  |
| (xst)  |  |  |  |  |  | Silt'e |  |  |  |  |  |
| xsu  |  |  | I/L |  |  | Sanumá |  |  |  |  |  |
| xsv  |  |  | I/E |  | Sūdaviskai | Sudovian | sudovien | sudoviano |  | ятвяжский | Jatwingisch |
| xsy  |  |  | I/L |  |  | Saisiyat |  |  | 赛夏语 |  | Saisiyat |
| xta  |  |  | I/L |  |  | Mixtec, Alcozauca |  |  |  |  |  |
| xtb  |  |  | I/L |  |  | Mixtec, Chazumba |  |  |  |  |  |
| xtc  |  |  | I/L |  |  | Katcha-Kadugli-Miri |  |  |  |  |  |
| xtd  |  |  | I/L |  |  | Mixtec, Diuxi-Tilantongo |  |  |  |  |  |
| xte  |  |  | I/L |  |  | Ketengban |  |  |  |  |  |
| xtg  |  |  | I/A |  |  | Gaulish, Transalpine |  |  | 山外高卢语 |  |  |
| xth  |  |  | I/E |  |  | Yitha Yitha |  |  |  |  |  |
| xti  |  |  | I/L |  |  | Mixtec, Sinicahua |  |  |  |  |  |
| xtj  |  |  | I/L |  |  | Mixtec, San Juan Teita |  |  |  |  |  |
| xtl  |  |  | I/L |  |  | Mixtec, Tijaltepec |  |  |  |  |  |
| xtm  |  |  | I/L |  |  | Mixtec, Magdalena Peñasco |  |  |  |  |  |
| xtn  |  |  | I/L |  |  | Mixtec, Northern Tlaxiaco |  |  |  |  |  |
| xto  |  |  | I/A |  |  | Tokharian A | tokharien A |  | 焉耆语; 东吐火罗语 |  |  |
| xtp  |  |  | I/L |  |  | Mixtec, San Miguel Piedras |  |  |  |  |  |
| xtq  |  |  | I/H |  |  | Tumshuqese |  |  | 图木舒克语 |  |  |
| xtr  |  |  | I/A |  |  | Tripuri, Early |  | tripuri |  |  |  |
| xts  |  |  | I/L |  |  | Mixtec, Sindihui |  |  |  |  |  |
| xtt  |  |  | I/L |  |  | Mixtec, Tacahua |  |  |  |  |  |
| xtu  |  |  | I/L |  |  | Mixtec, Cuyamecalco |  |  |  |  |  |
| xtv  |  |  | I/E |  |  | Thawa |  |  |  |  |  |
| xtw  |  |  | I/L |  |  | Tawandê |  |  |  |  |  |
| xty  |  |  | I/L |  |  | Mixtec, Yoloxochitl |  |  |  |  |  |
| xtz  |  |  | I/E |  |  | Tasmanian |  |  |  |  |  |
| xua  |  |  | I/L |  |  | Kurumba, Alu |  |  |  |  |  |
| xub  |  |  | I/L |  |  | Kurumba, Betta |  |  |  |  |  |
| xud  |  |  | I/E |  |  | Umiida |  |  |  |  |  |
| (xuf)  |  |  |  |  |  | Kunfal |  |  |  |  |  |
| xug  |  |  | I/L |  |  | Kunigami |  |  | 国头琉球语 |  |  |
| xuj  |  |  | I/L |  |  | Kurumba, Jennu |  |  |  |  |  |
| xul  |  |  | I/E |  |  | Ngunawal |  |  |  |  |  |
| xum  |  |  | I/A |  |  | Umbrian | ombrien | umbro | 翁布里亚语 | умбрский | Umbrisch |
| xun  |  |  | I/E |  |  | Unggarranggu |  |  |  |  |  |
| xuo  |  |  | I/L |  |  | Kuo |  |  |  |  |  |
| xup  |  |  | I/E |  |  | Umpqua, Upper |  |  |  |  |  |
| xur  |  |  | I/A |  |  | Urartian |  | urartiano |  |  |  |
| xut  |  |  | I/E |  |  | Kuthant |  |  |  |  |  |
| xuu  |  |  | I/L |  |  | Kxoe |  |  |  |  |  |
| xve  |  |  | I/A |  |  | Venetic |  |  | 威尼托语 | венетский |  |
| xvi  |  |  | I/L |  |  | Kamviri |  |  |  |  |  |
| xvn  |  |  | I/A |  |  | Vandalic |  |  | 汪达尔语 | вандальский |  |
| xvo  |  |  | I/A |  |  | Volscian |  |  | 沃尔西语 |  |  |
| xvs  |  |  | I/A |  |  | Vestinian |  |  | 维斯提奈语 |  |  |
| xwa  |  |  | I/L |  |  | Kwaza |  |  |  |  |  |
| xwc  |  |  | I/E |  |  | Woccon | woccon |  |  |  |  |
| xwd  |  |  | I/E |  |  | Wadi Wadi |  |  |  |  |  |
| xwe  |  |  | I/L |  |  | Gbe, Xwela |  |  |  |  |  |
| xwg  |  |  | I/L |  |  | Kwegu |  |  |  |  |  |
| xwj  |  |  | I/E |  |  | Wajuk |  |  |  |  |  |
| xwk  |  |  | I/E |  |  | Wangkumara |  |  |  |  |  |
| xwl  |  |  | I/L |  |  | Gbe, Western Xwla |  |  |  |  |  |
| xwo  |  |  | I/E |  |  | Oirat, Written |  |  | 古书面卫拉特语 |  |  |
| xwr  |  |  | I/L |  |  | Kwerba Mamberamo |  |  |  |  |  |
| xwt  |  |  | I/E |  |  | Wotjobaluk |  |  |  |  |  |
| xww  |  |  | I/E |  |  | Wemba Wemba |  |  |  |  |  |
| xxb  |  |  | I/E |  |  | Boro (Ghana) |  |  |  |  |  |
| xxk  |  |  | I/L |  |  | Ke'o |  |  |  |  |  |
| xxm  |  |  | I/E |  |  | Minkin |  |  |  |  |  |
| xxr  |  |  | I/E |  |  | Koropó |  |  |  |  |  |
| xxt  |  |  | I/E |  |  | Tambora |  |  |  |  |  |
| xya  |  |  | I/E |  |  | Yaygir |  |  |  |  |  |
| xyb  |  |  | I/E |  |  | Yandjibara |  |  |  |  |  |
| xyj  |  |  | I/E |  |  | Mayi-Yapi |  |  |  |  |  |
| xyk  |  |  | I/E |  |  | Mayi-Kulan |  |  |  |  |  |
| xyl  |  |  | I/E |  |  | Yalakalore |  |  |  |  |  |
| xyt  |  |  | I/E |  |  | Mayi-Thakurti |  |  |  |  |  |
| xyy  |  |  | I/L |  |  | Yorta Yorta |  |  |  |  |  |
| xzh  |  |  | I/A |  |  | Zhang-Zhung |  |  | 象雄语 |  |  |
| xzm  |  |  | I/E |  |  | Zemgalian |  | zemgaliano | 斯米伽联语 | земгальский |  |
| xzp  |  |  | I/H |  |  | Ancient Zapotec | zapotèque antique | zapoteco antiguo |  |  |  |