Provinces Autonomous regions Sub-provincial autonomous prefectures Autonomous prefectures Leagues (Aimag) (abolishing) Prefectures Provincial-controlled cities Provincial-controlled counties Autonomous counties County-level cities DistrictsEthnic districts Banners (Hoxu)Autonomous banners Shennongjia Forestry District Liuzhi Special District Wolong Special Administrative Region Workers and peasants districts Ethnic townships Towns Subdistricts Subdistrict bureaux Sum Ethnic sum County-controlled districts County-controlled district bureaux (obsolete) Management committees Town-level city Areas Villages · Gaqa · Ranches Village Committees Communities Capital cities New areas Autonomous administrative divisions National central cities History: before 1912, 1912–49, 1949–present A league (Mongolian: ayimaγ [æːmɑ̆ɡ̊] Aimag; historically, čiγulγan [t͡ʃʰʊːlɡ̊ɑ̆n] Qûûlgan; Chinese: 盟; pinyin: méng) is a prefecture-level administrative unit of the autonomous region of Inner Mongolia in the People's Republic of China.

During the Republic of China era, the leagues had a status equivalent to provinces.

The leader of the league's government, titled as league leader (simplified Chinese: 盟长; traditional Chinese: 盟長; pinyin: méngzhǎng), is appointed by People's Government of Inner Mongolia Autonomous Region.

The head of a league was chosen from jasagh or sula of the banners belonging to it.

Today, leagues belong to the prefecture level of the Chinese administrative hierarchy.