The Ussuri (/uːˈsʊəri/ oo-SOOR-ee; Russian: Уссури [ʊsˈsurʲɪ]) or Wusuli (Chinese: 烏蘇里 [(w)úsúlì]) is a river that runs through Khabarovsk and Primorsky Krais, Russia and the southeast region of Northeast China.

It rises in the Sikhote-Alin mountain range, flowing north and forming part of the Sino-Russian border (which is based on the Sino-Russian Convention of Peking of 1860), until it joins the Amur as a tributary to it near Khabarovsk.

[2] Its waters come from rain (60%), snow (30–35%), and subterranean springs.

In Manchu, it was called the Usuri Ula or Dobi Bira (River of Foxes) and in Mongolian the Üssüri Müren.

[4] Major tributaries of the Ussuri are, from source to mouth: