The Shamshy (Kyrgyz: Шамшы) is a river in Chüy District of Chüy Region of Kyrgyzstan. It is a left tributary of the Chu. The river is 58 km (36 mi) long, and has a watershed area of 475 km (183 sq mi). The annual average flow rate in mid-stream is 5.08 m/s (179 cu ft/s), maximum flow rate 48.1 m/s (1,700 cu ft/s) - in August, and minimum flow rate 0.82 m/s (29 cu ft/s) - in February. The largest tributary of Shamshy is Tuyuk river (length 24 km (15 mi) km, and watershed area - 177 km (68 sq mi)). There are 23 glaciers in the river basin with area of 31 km (19 mi). The river rises from glaciers on the northern slopes of Kyrgyz Ala-Too, flows through a narrow gorge northward, and enters Chüy Valley. Shamshy is linked to the Great Chüy Canal. The river is used for irrigation.

42°45′N 75°19′E / 42.750°N 75.317°E / 42.750; 75.317