ISO 639:x
# ISO 639:x

This is a list of ISO 639-3 language codes starting with X.

Index | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z

Abbreviations are used in the table as follows:

* Scope: I = individual language, M = macrolanguage, S = special code
* Type: A = ancient (extinct since ancient times), C = constructed, E = extinct (in recent times), H = historical (distinct from its modern form), L = living, S = special code

Retired codes are enclosed in (parentheses).

The column Family contains the generic English name of the language's family or macrolanguage.

| 639-3 | 639-1 | 639-2B | Scope/Type | Family | Native | eng | fra | spa | zho | rus | deu |
| - | - | - | - | - | - | - | - | - | - | - | - |
| xaa | | | I/H | | | Andalusian Arabic | | | 安达卢西亚阿拉伯语 | | |
| xab | | | I/L | Indo-European | | Sambe | | | | | |
| xac | | | I/L | | | Kachari | | | | | |
| xad | | | I/E | | | Adai | | | | | |
| xae | | | I/A | | | Aequian | | | 埃桂语 | | |
| xag | | | I/A | | | Aghwan | | | | | |
| (xah) | | | | | | Kahayan | | | | | |
| xai | | | I/E | | | Kaimbé | | | | | |
| xaj | | | I/E | Tupian | | Ararandewára | | | | | |
| xak | | | I/E | isolate | | Máku | | | | | |
| xal | | xal | I/L | | хальмг | Kalmyk; Oirat | kalmouk; oïrat | kalmyk | 卫拉特语; 卡尔梅克语 | калмыцкий; ойратский | Kalmückisch |
| xam | | | I/E | | | /Xam | | | | | |
| xan | | | I/L | | | Xamtanga | | | | | |
| xao | | | I/L | | | Khao | | | | | |
| xap | | | I/E | | | Apalachee | | | | | |
| xaq | | | I/A | | | Aquitanian | | | 阿基坦语 | | |
| xar | | | I/E | | | Karami | | | | | |
| xas | | | I/E | | | Kamas | | | | | |
| xat | | | I/L | | | Katawixi | | | | | |
| xau | | | I/L | | | Kauwera | | | | | |
| xav | | | I/L | | | Xavánte | xavánte | | | | |
| xaw | | | I/L | | | Kawaiisu | | kawaiisu | | | |
| xay | | | I/L | | | Kayan Mahakam | | | | | |
| (xba) | | | I/E | | | Kamba (Brazil) | | | | | |
| xbb | | | I/E | | | Lower Burdekin | | | | | |
| xbc | | | I/A | | | Bactrian | | | 大夏语; 巴克特里亚语 | | |
| xbd | | | I/E | | | Bindal | | | | | |
| xbe | | | I/E | | | Bigambal | | | | | |
| xbg | | | I/E | | | Bunganditj | | | | | |
| xbi | | | I/L | | | Kombio | | | | | |
| xbj | | | I/E | | | Birrpayi | | | | | |
| xbm | | | I/H | | | Breton, Middle | | | 中古布列塔尼语 | | |
| xbn | | | I/E | | | Kenaboi | | | | | |
| xbo | | | I/H | | | Bolgarian | | | 布勒加尔语 | | |
| xbp | | | I/E | | | Bibbulman | | | | | |
| xbr | | | I/L | | | Kambera | | | | | Kambera |
| xbw | | | I/E | | | Kambiwá | | | | | |
| (xbx) | | | I/E | | | Kabixí | | xabixí | | | |
| xby | | | I/L | | | Batyala | | | | | |
| xcb | | | I/H | | | Cumbric | cambrien | | 坎伯兰语 | | Kumbrisch |
| xcc | | | I/A | | | Camunic | | | | | |
| xce | | | I/A | | | Celtiberian | | | 凯尔特伊比利亚语 | | Keltiberisch |
| xcg | | | I/A | | | Gaulish, Cisalpine | | | 山南高卢语 | | |
| xch | | | I/E | | | Chemakum | | | | | |
| xcl | | | I/H | | | Armenian, Classical | | | 古典亚美尼亚语 | | |
| xcm | | | I/E | | | Comecrudo | | | | | |
| xcn | | | I/E | | | Cotoname | | | | | |
| xco | | | I/A | | | Chorasmian | | | 花剌子模语 | | |
| xcr | | | I/A | | | Carian | | | | карийский | Karisch |
| xct | | | I/H | | | Tibetan, Classical | | | 古典藏语 | | |
| xcu | | | I/H | | | Curonian | curonien | curonio | 库洛年语 | | Kurisch |
| xcv | | | I/E | | | Chuvantsy | | | | | |
| xcw | | | I/E | | | Coahuilteco | | | | | |
| xcy | | | I/E | | | Cayuse | | | | | |
| xda | | | I/L | | | Darkinyung | | | | | |
| xdc | | | I/A | | | Dacian | | | 达基亚语 | | |
| xdk | | | I/E | | | Dharuk | | | | | |
| xdm | | | I/A | | | Edomite | | | 埃多姆语 | | |
| xdo | | | I/L | Niger–Congo | | Kwandu | | | | | |
| xdq | | | I/L | Northeast Caucasian | | Kaitag | | | | | |
| xdy | | | I/L | | | Malayic Dayak | | | | | |
| xeb | | | I/A | | | Eblan | éblaïte | | 埃卜拉语 | | Eblaitisch |
| xed | | | I/L | | | Hdi | | | | | |
| xeg | | | I/E | | | //Xegwi | | | | | |
| xel | | | I/L | | | Kelo | | | | | |
| xem | | | I/L | | | Kembayan | | | | | |
| xep | | | I/A | | | Epi-Olmec | | | | | |
| xer | | | I/L | | | Xerénte | | | | | |
| xes | | | I/L | | | Kesawai | | | | | |
| xet | | | I/L | | | Xetá | | xetá | | | |
| xeu | | | I/L | | | Keuru | | | | | |
| xfa | | | I/A | | | Faliscan | | falisco | 法利希语 | фалискский | Faliskisch |
| xga | | | I/A | | | Galatian | | | 加拉提亚语 | | Galatisch |
| xgb | | | I/E | | | Gbin | | | | | |
| xgd | | | I/E | | | Gudang | | | | | |
| xgf | | | I/E | | | Gabrielino-Fernandeño | | gabrieleño-fernandeño | | | |
| xgg | | | I/E | | | Goreng | | | | | |
| xgi | | | I/E | | | Garingbal | | | | | |
| xgl | | | I/H | | | Galindan | | | | | |
| xgm | | | I/E | | | Guwinmal | | | | | |
| xgr | | | I/E | | | Garza | | | | | |
| xgu | | | I/L | | | Unggumi | | | | | |
| xgw | | | I/E | | | Guwa | | | | | |
| xha | | | I/A | | | Harami | | | | | |
| xhc | | | I/A | | | Hunnic | | | | гуннский | Hunnisch |
| xhd | | | I/A | | | Hadrami | | | 哈德拉米语 | | |
| xhe | | | I/L | | | Khetrani | | | | | |
| xhm | | | I/H | Austroasiatic | | Khmer, Middle (1400 to 1850 CE) | | | | | |
| xho | xh | xho | I/L | Niger–Congo | isiXhosa | Xhosa | xhosa | xhosa | 科萨语 | коса | Xhosa |
| xhr | | | I/A | | | Hernican | | | | | |
| xht | | | I/A | | | Hattic | | hatti | 哈梯语 | | |
| xhu | | | I/A | | | Hurrian | | | 胡里语 | | |
| xhv | | | I/L | | | Khua | | | | | |
| (xia) | | | I/L | | | Xiandao | | | 仙岛语 | | |
| xib | | | I/A | | | Iberian | ibère | | 伊利比亚语 | | Iberisch |
| xii | | | I/L | | | Xiri | | | | | |
| xil | | | I/A | | | Illyrian | | | 伊利里亚语 | иллирийский | Illyrisch |
| xin | | | I/E | | | Xinca | | | | | |
| (xip) | | | I/E | | | Xipináwa | xipináwa | xipináwa | | | |
| xir | | | I/E | | | Xiriâna | | | | | |
| xis | | | I/L | Indo-European | | Kisan | | | | | |
| xiv | | | I/A | | | Indus Valley Language | | | | | |
| xiy | | | I/L | | | Xipaya | | xipaya | | | |
| xjb | | | I/E | | | Minjungbal | | | | | |
| xjt | | | I/E | | | Jaitmatang | | | | | |
| xka | | | I/L | | | Kalkoti | | | | | |
| xkb | | | I/L | | | Ede Nago, Manigri-Kambolé | | | | | |
| xkc | | | I/L | | | Kho'ini | | | | | |
| xkd | | | I/L | | | Kayan, Mendalam | | | | | |
| xke | | | I/L | | | Kereho-Uheng | | | | | |
| xkf | | | I/L | | | Khengkha | | | | | |
| xkg | | | I/L | | | Kagoro | | | | | |
| (xkh) | | | I/L | | | Karahawyana | | | | | |
| xki | | | I/L | | | Kenyan Sign Language | | | 肯尼亚手语 | | |
| xkj | | | I/L | | | Kajali | | | | | |
| xkk | | | I/L | | | Kaco' | | | | | |
| xkl | | | I/L | | | Kenyah, Kelinyau | | | | | |
| (xkm) | | | | | | Mahakam Kenyah | | | | | |
| xkn | | | I/L | | | Kayan, Kayan River | | | | | |
| xko | | | I/L | | | Kiorr | | | | | |
| xkp | | | I/L | | | Kabatei | | | | | |
| xkq | | | I/L | | | Koroni | | | | | |
| xkr | | | I/E | | | Xakriabá | | | | | |
| xks | | | I/L | | | Kumbewaha | | | | | |
| xkt | | | I/L | | | Kantosi | | | | | |
| xku | | | I/L | | | Kaamba | | | | | |
| xkv | | | I/L | | | Kgalagadi | | | | | |
| xkw | | | I/L | | | Kembra | | | | | |
| xkx | | | I/L | | | Karore | | | | | |
| xky | | | I/L | | | Kenyah, Western | | | | | |
| xkz | | | I/L | | | Kurtokha | | | | | |
| xla | | | I/L | | | Kamula | | | | | |
| xlb | | | I/E | | | Loup B | loup b | | | | |
| xlc | | | I/A | | | Lycian | | | 吕基亚语 | ликийский | Lykisch |
| xld | | | I/A | | | Lydian | | | 吕底亚语 | лидийский | Lydisch |
| xle | | | I/A | | | Lemnian | | | | | |
| xlg | | | I/A | | | Ligurian (Ancient) | | | 古代利古里亚语 | | |
| xli | | | I/A | | | Liburnian | | | | | |
| xln | | | I/A | | | Alanic | | | | | |
| xlo | | | I/E | | | Loup A | loup A | | | | |
| xlp | | | I/A | | | Lepontic | | | 勒庞蒂语 | | Lepontisch |
| xls | | | I/A | | | Lusitanian | | | 卢西塔尼亚语 | | |
| xlu | | | I/A | | | Luwian, Cuneiform | | | 卢维语（楔形文字） | лувийский | |
| xly | | | I/A | | | Elymian | | | 艾利米亚语 | | |
| xma | | | I/L | | | Mushungulu | | | | | |
| xmb | | | I/L | | | Mbonga | | | | | |
| xmc | | | I/L | | | Makhuwa-Marrevone | | | | | |
| xmd | | | I/L | | | Mbedam | | | | | |
| xme | | | I/A | | | Median | | | 米底语 | | |
| xmf | | | I/L | | მარგალური | Mingrelian | mingrélien | mingrelio | 明格列尔语; 梅格列尔语 | мегрельский | |
| xmg | | | I/L | | | Mengaka | | | | | |
| xmh | | | I/L | | | Kuku-Muminh | | | | | |
| (xmi) | | | | | | Miarrã | | | | | |
| xmj | | | I/L | | | Majera | | | | | |
| xmk | | | I/A | | | Macedonian, Ancient | | | 古马其顿语 | | Altmazedonisch |
| xml | | | I/L | | | Malaysian Sign Language | | | 马来西亚手语 | | Malayische Zeichensprache |
| xmm | | | I/L | | | Malay, Manado | | | | | |
| xmn | | | I/H | | | Manichaean Middle Persian | | | | | |
| xmo | | | I/L | | | Morerebi | | morerebi | | | |
| xmp | | | I/E | | | Kuku-Mu'inh | | | | | |
| xmq | | | I/E | | | Kuku-Mangk | | | | | |
| xmr | | | I/A | | | Meroitic | méroïtique | | | | Meroitisch |
| xms | | | I/L | | | Moroccan Sign Language | | | 摩洛哥手语 | | Marokkanische Zeichensprache |
| xmt | | | I/L | | | Matbat | | | | | |
| xmu | | | I/E | | | Kamu | | | | | |
| xmv | | | I/L | | | Malagasy, Antankarana | | | | | |
| xmw | | | I/L | | | Malagasy, Tsimihety | | | | | |
| xmx | | | I/L | | | Maden | | | | | |
| xmy | | | I/L | | | Mayaguduna | | | | | |
| xmz | | | I/L | | | Mori Bawah | | | | | Mori Bawah |
| xna | | | I/A | | | North Arabian, Ancient | | | 古代北阿拉伯语 | | |
| xnb | | | I/L | | | Kanakanabu | | | 卡那卡那布语 | | Kanakanabu |
| xng | | | I/H | | | Mongolian, Middle | | | 中古蒙古语 | | |
| xnh | | | I/L | | | Kuanhua | | | 宽话 | | |
| xni | | | I/E | | | Ngarigu | | | | | |
| xnj | | | I/L | Niger–Congo | | Ngoni (Tanzania) | | | | | |
| xnk | | | I/E | | | Nganakarti | | | | | |
| xnm | | | I/E | | | Ngumbarl | | | | | |
| xnn | | | I/L | | | Kankanay, Northern | | | | | |
| xno | | | I/H | | | Anglo-Norman | | | 盎格鲁-诺曼语 | | Anglonormannisch |
| xnq | | | I/L | Niger–Congo | | Ngoni (Mozambique) | | | | | |
| xnr | | | I/L | | | Kangri | | | | | |
| xns | | | I/L | | | Kanashi | | | | | |
| xnt | | | I/E | | | Narragansett | | | | | |
| xnu | | | I/E | | | Nukunul | | | | | |
| xny | | | I/L | | | Nyiyaparli | | | | | |
| xnz | | | I/L | | | Kenzi | | | | | |
| xoc | | | I/E | | | O'chi'chi' | | | | | |
| xod | | | I/L | | | Kokoda | | | | | |
| xog | | | I/L | | | Soga | | | | | |
| xoi | | | I/L | | | Kominimung | | | | | |
| xok | | | I/L | | | Xokleng | | | | | |
| xom | | | I/L | | | Komo (Sudan) | | | | | |
| xon | | | I/L | | | Konkomba | | | | | |
| xoo | | | I/E | | | Xukurú | | | | | |
| xop | | | I/L | | | Kopar | | | | | |
| xor | | | I/L | | | Korubo | | | | | |
| xow | | | I/L | | | Kowaki | | | | | |
| xpa | | | I/E | | | Pirriya | | | | | |
| xpb | | | I/E | | | Northeastern Tasmanian, Pyemmairrener | | | | | |
| xpc | | | I/H | | | Pecheneg | | | 彼切尼克语 | | |
| xpd | | | I/E | | | Oyster Bay Tasmanian | | | | | |
| xpe | | | I/L | | | Kpelle, Liberia | | | | | |
| xpf | | | I/E | | | Nuenonne, Southeast Tasmanian | | | | | |
| xpg | | | I/A | | | Phrygian | | | 佛里吉亚语 | | |
| xph | | | I/E | | | North Midlands Tasmanian, Tyerrenoterpanner | | | | | |
| xpi | | | I/H | | | Pictish | picte | | 皮克特语 | | |
| xpj | | | I/E | | | Mpalitjanh | | | | | |
| xpk | | | I/L | | | Kulina Pano | | | | | |
| xpl | | | I/E | | | Port Sorell Tasmanian | | | | | |
| xpm | | | I/E | | | Pumpokol | | | | | |
| xpn | | | I/E | | | Kapinawá | | | | | |
| xpo | | | I/E | | | Pochutec | | pochuteco | | | |
| xpp | | | I/A | | | Puyo-Paekche | | | | | |
| xpq | | | I/E | | | Mohegan-Pequot | | | | | |
| xpr | | | I/A | | | Parthian | | | 巴底亚语 | | |
| xps | | | I/A | | | Pisidian | | | | | |
| xpt | | | I/E | | | Punthamara | | | | | |
| xpu | | | I/A | | | Punic | punique | púnico | 布匿语 | | |
| xpv | | | I/E | | | Northern Tasmanian, Tommeginne | | | | | |
| xpw | | | I/E | | | Northwestern Tasmanian, Peerapper | | | | | |
| xpx | | | I/E | | | Southwestern Tasmanian, Toogee | | | | | |
| xpy | | | I/A | | | Puyo | | | | | |
| xpz | | | I/E | | | Bruny Island Tasmanian | | | | | |
| xqa | | | I/H | | | Karakhanid | | | 喀喇汗语 | | |
| xqt | | | I/A | | | Qatabanian | | | | | |
| xra | | | I/L | | | Krahô | | | | | |
| xrb | | | I/L | | | Karaboro, Eastern | | | | | |
| xrd | | | I/E | | | Gundungurra | | | | | |
| xre | | | I/L | | | Kreye | | | | | |
| xrg | | | I/E | | | Minang | | | | | |
| xri | | | I/L | | | Krikati-Timbira | | | | | |
| xrm | | | I/A | | | Armazic | | | | | |
| 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 | | | |
