Bayan-Öndör

Bayan-Öndör (, Баян Өндөр, Mongolian: rich plateau, 巴彦温都尔, Bayan-Ondor, Bayan-Undur) may refer to:

Mongolia

 * several Sums (districts) in different Aimags (provinces), Mongolia
 * Bayan-Öndör, Bayankhongor
 * Bayan-Öndör, Orkhon
 * Bayan-Öndör, Övörkhangai

China

 * Bayanundur, Ar Horqin, a sum (Township) in Ar Horqin Banner, Inner Mongolia