see 敖包[ao2 bao1]

see 鄂城區|鄂城区[E4 cheng2 Qu1]

see 鄂州市[E4 zhou1 Shi4]

Oroqen ethnic group

Echeng, a district of Ezhou City 鄂州市[E4 zhou1 Shi4], Hubei

Ezhou, prefecture-level city in Hubei Province 湖北省[Hu2 bei3 Sheng3]

Otog banner or Otgiin khoshuu in Ordos 鄂爾多斯|鄂尔多斯[E4 er3 duo1 si1], Inner Mongolia

Evenki ethnic group

Oroqen ethnic group

see 鄂爾多斯市|鄂尔多斯市[E4 er3 duo1 si1 Shi4]

Otog banner or Otgiin khoshuu in Ordos 鄂爾多斯|鄂尔多斯[E4 er3 duo1 si1], Inner Mongolia

Evenki ethnic group

Ewenke language (of Ewenke ethnic group of Inner Mongolia)

Ottoman Empire (Tw)

Ordos, prefecture-level city in Inner Mongolia Autonomous Region 內蒙古自治區|内蒙古自治区[Nei4 meng3 gu3 Zi4 zhi4 qu1]

Otog Front banner or Otgiin Ömnöd khoshuu in Ordos 鄂爾多斯|鄂尔多斯[E4 er3 duo1 si1], Inner Mongolia

Sea of Okhotsk

Oroqin Autonomous Banner in Hulunbuir 呼倫貝爾|呼伦贝尔[Hu1 lun2 bei4 er3], Inner Mongolia

Ordos Desert, Inner Mongolia

Ordos Plateau, Inner Mongolia

Evenk Autonomous Banner in Hulunbuir 呼倫貝爾|呼伦贝尔[Hu1 lun2 bei4 er3], Inner Mongolia