Bayannuur, Bayannur, or Bayinnur ( Mongolian: Баян-нуур, Mongolian: rich lake) may refer to:
Mongolia
edit- several Sums (districts) in different Aimags (provinces), Mongolia
- Bayan Lake, a lake in Zavkhan Province
China
edit- Bayannur, a prefecture-level city in Inner Mongolia
- Bayannur, Sonid , a town in Sonid Left Banner, Inner Mongolia
- Bayannur, Horqin , a sum (Township) in Horqin Right Middle Banner, Inner Mongolia
- Bayinnur, Otog , (Chinese: 巴音淖尔乡) a Township in Otog Banner, Inner Mongolia