The At-Bashy () is a left tributary of the Naryn in Naryn Region of Kyrgyzstan. The river is formed at the north slope of Jangy-Jer Range by confluence of the rivers Ulan and Jangy-Jer. It flows into the Naryn near Dostuk. It is long, and has a drainage basin of . Average altitude - 3,060 m, annual average flow rate - 33.1 m³/s, and average specific discharge - 5.98 L/s•km2.Hydrological Characteristics of Naryn River and its tributaries (in Russian)
