Ar Horqin Banner (Mongolian: ; ) is a banner of eastern Inner Mongolia, China. It is under the administration of Chifeng City, about to the south-southwest. The banner lies on China National Highway 303, running from Ji'an, Jilin to Xilinhot, Inner Mongolia. The Mongolian dialect spoken in Ar Khorchin is not Khorchin, as the name suggests, but Baarin.
Ar Horqin Banner is made up of 2 subdistricts, 7 towns, 3 townships, and 4 sums.
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