| At-Bashy | |
| Pushpin Map: | Kyrgyzstan |
| Subdivision Type1: | Country |
| Subdivision Name1: | Kyrgyzstan |
| Subdivision Type3: | Region |
| Subdivision Name3: | Naryn Region |
| Subdivision Type4: | District |
| Subdivision Name4: | At-Bashy District |
| Length: | 180km (110miles) |
| Source1: | confluence of Ulan and Jangy-Jer |
| Source1 Coordinates: | 41.3208°N 76.6667°W |
| Source1 Elevation: | 2837m (9,308feet) |
| Mouth: | Naryn |
| Mouth Coordinates: | 41.3722°N 75.5986°W |
| Mouth Elevation: | 1807m (5,928feet) |
| Basin Size: | 5540km2 |
The At-Bashy (Kirghiz; Kyrgyz: Ат-Башы) 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 the confluence of the rivers Ulan and Jangy-Jer. It flows into the Naryn near Dostuk. It is long, and has a drainage basin of .[1] Average altitude - 3,060 m, annual average flow rate - 33.1 m³/s, and average specific discharge - 5.98 L/s•km2.[2] Settlements along the banks of the At-Bashy include At-Bashy, Bash-Kayyngdy, Birinchi May and Taldy-Suu.[1]