| Ak-Suu | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Kyrgyzstan, Kazakhstan |
| Subdivision Type3: | Region |
| Subdivision Name3: | Chüy Region, Jambyl Region |
| Length: | 155km (96miles) |
| Source1 Location: | Chüy Region, Kyrgyzstan |
| Mouth: | Chu |
| Mouth Location: | Kazakhstan |
| Mouth Coordinates: | 43.3381°N 73.97°W |
| Mouth Elevation: | 515m (1,690feet) |
| Basin Size: | 483km2 |
| Tributaries Right: | Temen-Suu |
The Ak-Suu or Aqsu (Kirghiz; Kyrgyz: Ак-Суу in Kirghiz; Kyrgyz pronounced as /ɑq suː/, Kazakh: Ақсу Aqsū, both meaning "white water") is a river running through mostly Moskva District, Chüy Region, Kyrgyzstan and Shu District, Jambyl Region, Kazakhstan. It is long, and has a drainage basin of .[1] It takes its rise on the northern slope of the Kyrgyz Ala-Too, and it runs through the Narzan Valley north into the Chüy Valley and through the city of Belovodskoye, which is named after it. It flows into the Chu (left tributary) in southern Kazakhstan.[2]