Rhamnus davurica is a species of flowering plant in the buckthorn family known by the common name Dahurian buckthorn. It is native to China, North Korea, Mongolia, eastern Siberia, and Japan. It is present in North America as an introduced species. In the United States this is an invasive species, growing in woodlands, forests, and other habitat types. In its native China it occurs in wet places, such as the edges of canals.