Balkusan (formerly called Balgusan, Balkasun) is a village in Ermenek district of Karaman Province, Turkey. It is situated in a high plateau of the Taurus Mountains at 36°46′N 32°53′E. Distance to Ermenek is 22 kilometres (14 mi). The population of the town is 211 as of 2014. The origin of the village residents are Turkmens of Afshar tribe who had migrated from the Central Asia in the Medieval Age. The name of the village may refer to Balasagun, a historical city in Kyrgyzstan.