Chahar Right Back Banner (Mongolian: ᠴᠠᠬᠠᠷ ᠪᠠᠷᠠᠭᠤᠨ ᠭᠠᠷᠤᠨ ᠬᠣᠶᠢᠲᠤ ᠬᠣᠰᠢᠭᠤ Čaqar Baraɣun Ɣarun Qoyitu qosiɣu; simplified Chinese: 察哈尔右翼后旗; traditional Chinese: 察哈爾右翼後旗; pinyin: Cháhā'ěr Yòuyì Hòuqí) is a banner of Inner Mongolia, People's Republic of China, bordering Shangdu County to the northeast, Xinghe County to the southeast, Chahar Right Front Banner to the south, Zhuozi County to the southwest, Chahar Right Back Banner to the west, Siziwang Banner to the northwest, and Xilin Gol to the north.