Fraxinus mandshurica, the Manchurian ash, is a species of Fraxinus native to northeastern Asia in northern China (Gansu, Hebei, Heilongjiang, Henan, Hubei, Jilin, Liaoning, Shaanxi, Shanxi), Korea, Japan and southeastern Russia (Sakhalin Island).

The flowers are produced in early spring, before the new leaves, in compact panicles; they are inconspicuous with no petals, and are wind-pollinated.

[1] However, unlike that species, Fraxinus mandshurica is dioecious, with male and female flowers produced on separate individuals.

It requires a continental climate with well-defined seasons with cold winters, hot summers, and freedom from late spring frosts.

It has proved very intolerant of oceanic climate conditions in cultivation, leafing out too early and then being damaged by late spring frosts.

[6] The species is being tested as a potential source of genes for resistance to emerald ash borer Agrilus planipennis, an Asian insect which occurs alongside Manchurian ash in the wild, and which has become an invasive pest species in North America.