O (Ordos Shi) Ordos (Qiandongnan Miao and Dong Autonomous Prefecture) Ouyang (Haixi Mengguzu Zangzu Zizhizhou) Obo Liang (Ordos Shi) Obon Xil (Hinggan Meng) Obor Jalag (Haixi Mengguzu Zangzu Zizhizhou) Obson Jah (Rikaze Diqu) Ogar (Shannan Diqu) Oglasa (Rikaze Diqu) Ogma (Nyingchi Prefecture) Ogpu (Qizilsu) Ohsalur (Shannan Diqu) Oiga (Qamdo Shi) Oigarkai (Shannan Diqu) Oincun (Nyingchi Prefecture) Oiqu (Rikaze Diqu) Oiyug (Rikaze Diqu) Oiyug (Qamdo Shi) Okai (Xoten Wilayiti) Oku (Xilin Gol Meng) Olan Hudagin Sum (Lupanshui Shi) Olangpu (Kumul Diqu) Olatay (Tongliao Shi) Olji Moron (Bayannur Shi) Oljit (Shannan Diqu) Olung (Ngari Diqu) Oma (Nagqu Shi) Omaciu (Nagqu Shi) Omatang (Nagqu Shi) Ombu (Xoten Wilayiti) Omsha 1 2 3