Salix delnortensis is a species of willow known by the common name Del Norte willow. It is native to the Klamath Mountains of southern Oregon and northern California, where it grows in serpentine soils in riparian habitat. It is a shrub growing one or two meters tall. It forms thickets, sometimes quite large, some of which are made up of clones of one individual. The shrub has many branches, which are very brittle. The young twigs are velvety or woolly with hairy coats; older branches are hairless. The leaves are oval, sometimes with pointed tips, smooth-edged, and woolly on the undersides. They grow to 10 centimeters long or more. The inflorescences are produced before the leaves. Each is a catkin of flowers. Male catkins are about 3 centimeters long and thick, while female catkins vary in size.