Heishui (Chinese: 黑水, lit. "Blackwater") may refer to:
- the Hei River or Heishui, the headwaters of the Ruo Shui in Gansu & Inner Mongolia
- the Dan River in Shaanxi, formerly known as the Heishui
- the Jinsha River in Qinghai & Sichuan, formerly known as the Heishui
- the Amur River in Manchuria, formerly known as the Heishui