Horqin Left Rear Banner (Mongolian: ᠬᠣᠷᠴᠢᠨ ᠵᠡᠭᠦᠨ ᠭᠠᠷᠤᠨ ᠬᠣᠶᠢᠲᠤ ᠬᠣᠰᠢᠭᠤ [note 1] ; Chinese: 科尔沁左翼后旗, original Mongolian name Büve vang qosigu[citation needed]) is a banner of southeastern Inner Mongolia, China, bordering Liaoning province to the south.

It is under the administration of Tongliao City, 75 kilometres (47 mi) to the north and its banner seat is the town of Ganjig.

The local Mongolian dialect is Khorchin Mongolian.

Horqin Left Rear Banner is made up of 10 towns, 1 township and 5 sums.

This Inner Mongolia location article is a stub.