Outer Mongolia (Mongolian: Ar Mongol, Manchu: Tulergi Monggo, Chinese: 外蒙古; pinyin: Wài Měngg&#468
was a political division of the Beiyang Government. It consisted of the following four provinces (aimags), ordering from east to west:
* Chechen Khan Province (Chechen Khan Ayimagh, Setsen Khan Aimag)
* Töshiyetü Khan Province (Töshiyetü Khan Ayimagh, Tüsheet Khan Aimag)
* Sayin Noyan Khan Province (Sayin Noyan Khan Ayimagh, Sain Noyon Khan Aimag)
* Jasaghtu Khan Province (Jasaghtu Khan Ayimagh, Zasagt Khan Aimag)
Today the name is sometimes still informally used referring to Mongolia (a sovereign state), which controls roughly the same territory.