- Language: Kalmyk-Oirat
- Alternate names: Kalmyk, West Mongolian, Xal‘mg keln, Kalmuk, Kalmuck, Kalmack, Qalmaq, kalmytskii jazyk, Khal:mag, Oirat, Volga Oirat, European Oirat, Western Mongolian, Weilate, Xinjiang Mongolian, Western Mongol, Oiratisch, Kalmückisch, Western Mongul, Xal'maq, Calmucki, Хальмг келн, калмыцкий язык
- Language code: xal
- Language family: Mongolic-Khitan, Mongolic, Eastern Mongolic, Khalkha-Buriat, Mongolian
- Number of speakers: 323,857
- Vulnerability: Vulnerable
- Script: Cyrillic script, adopted in 1924, used in Russia and Mongolia. Mongolian script, Todo style, used in China.
The modern literary language is mainly based on the Torgut dialect, though it incorporates a large number of concessions to Dörböt. Buddhist (Lamaist).
Note that Spoken Oirat and Written Oirat (aka Clear script /Todo Bichig, which is based on Mongolic scripts and was designed by a Buddhist monk in 1648) are different. And "Kalmyk and Xinjiang Oirat are mutually intelligible to a great extent." (Elena Indjieva 2009:6)