楚河（柯尔克孜语：Чүй；哈萨克语：Шу；俄语：Чу），又名碎叶川，位于中亚地区，是吉尔吉斯斯坦、哈萨克斯坦著名的河流。楚河源出位于天山山脉西部的泰尔斯凯山脉和吉尔吉斯山脉的朱瓦纳雷克河(Joon Aryk)和科奇科尔河(Kochkor River)，两源流汇合后向东北流，1950年代以前有支流名叫库捷马尔迪河（Ketmaldy ）连通伊塞克湖，现在仅在洪水期才有水排入该湖，楚河流经该湖附近后转向西北流，成为吉尔吉斯斯坦与哈萨克斯坦的界河，并在比什凯克西北50km处进入哈萨克斯坦境内，继而横穿穆云库姆沙漠，最后汇入阿克扎伊肯湖（Akjaykyn）。河流全长1067km，流域面积6.25万km，多年平均流量61m/s ，径流量19.2亿m。

"Chui River" and "Chuy River" redirect here. For the river of Anhui see Chu River (Anhui). For the South American Chuí or Chuy River, on the Brazil-Uruguay border and Brazil's southernmost point, see Chuí Stream. For the Nam Sam River or Chu River, on the Lao-Vietnam border, see Nam Sam River.

The Chu (Shu or Chui, Chuy) (Kazakh:Шу, Kyrgyz:Чүй, Russian:Чу) is a river in northern Kyrgyzstan and southern Kazakhstan. Of the length of approximately 1 067 kilometres (663 miles), the first 115 kilometres are in Kyrgyzystan, then for 221 kilometres the river is the border between Kyrgyzystan and Kazakhstan, and the last 731 kilometres are in Kazakhstan. It's one of the longest rivers in Kyrgyzstan and in Kazakhstan.