Wikstroemia uva-ursi is a species of flowering plant in the family Thymelaeaceae, native to Japan. It is a deciduous shrub that grows up to 2 meters tall. The leaves are alternate, simple, ovate, and have a serrated margin. The flowers are small, yellow-green, and appear in clusters in the axils of the leaves. The fruit is a capsule that splits open to reveal small black seeds.