Horqin Left Middle Banner (Mongolian: ᠬᠣᠷᠴᠢᠨ ᠵᠡᠭᠦᠨ ᠭᠠᠷᠤᠨ ᠳᠤᠮᠳᠠᠳᠤ ᠬᠣᠰᠢᠭᠤ; Chinese: 科尔沁左翼中旗), formerly known as Darhan Banner (Mongolian: Дархан хошуу), is a banner of eastern Inner Mongolia, China, bordering Jilin province to the east.

It is under the administration of Tongliao City, 101 kilometres (63 mi) to the southwest.

The local Mongolian dialect is Khorchin Mongolian.

Horqin Left Middle Banner is made up of 1 subdistrict, 11 towns, 1 township, 5 sums, and 3 farms and pastures.

This Inner Mongolia location article is a stub.