Outer Mongolia was a political division of Mongolia during the Qing Dynasty, as opposed to Inner Mongolia.
It consisted of the following four provinces (ayimagh).
- Chechen Khan Ayimagh (Tsetsen Han Aymag)
- Töshiyetü Khan Ayimagh (Tösheet Han Aymag)
- Sayin Noyan Ayimagh (Sayn Noyon Aymag)
- Jasaghtu Khan Ayimagh (Jasagt Han Aymag)
Jebtsundamba Khutughtu was the spiritual leader of Outer Mongolia.
See also: Altan Khan of the Khalkha