蒙古语族
"Ethnologue" classifies Kalmyk Oirat as a member of the Eastern branch of the Mongolic languages: "Mongolic, Eastern, Oirat-Khalkha, Oirat-Kalmyk-Darkhat". This places Standard Mongolian – which is essentially Khalkha Mongolian – and Kalmyk Oirat fairly close together.