Bayan-Ovoo (, 'rich shrine') may refer to:
Mongolia Bayan-Ovoo, Bayankhongor, a sum (district) in Bayankhongor Province Bayan-Ovoo, Khentii, a sum (district) in Khentii Province Bayan-Ovoo, Ömnögovi, a sum (district) in Ömnögovi Province
China , a sum in Darhan Muminggan United Banner, Baotou, Inner Mongolia , a sum in Dorbod Banner, Ulanqab, Inner Mongolia Bayan Obo Mining District, a district in Baotou, Inner Mongolia Bayan Obo mine, a deposit in Baotou, Inner Mongolia , a Township in Hoboksar, Tacheng, Xinjiang