南戈壁省
Alxa Left Banner (Mongolian: "Alaša Jegün qosiɣu"; ) is a banner (administrative division) in the southwest of Inner Mongolia, China. It borders the Republic of Mongolia's Ömnögovi Province to the north, the autonomous region of Ningxia to the southeast, and Gansu province to the southwest. The town of Bayanhot/Bayenhot (Tingyuanying) (), situated in the banner, is the seat of government of the greater Alxa League, of which Alxa Left Banner is a part.