Khalkhas

The Khalkha or Halh (/ˈkælkə, ˈkɑːlkə/; Mongolian: Халх ᠬᠠᠯᠬ᠎ᠠ [ˈχa̠ɬχ]) have been the largest subgroup of the Mongols in what is now Mongolia since the 15th century. The Khalkha, together with Chahars, Ordos and Tumed, were directly ruled by Borjigin khans until the 20th century. Most now speak Khalkha or Halh, which is the standard written language of Mongolia.

In contrast, the Oirats were ruled by Dzungar nobles and the Khorchins were ruled by Qasar's descendants, and they speak distinct varieties: Oirat and Khorchin.