Salix arizonica is a species of willow known by the common name Arizona willow. It is native to the southwestern United States, where it occurs in Arizona, Colorado, New Mexico, and Utah. This shrub varies in size and shape, occurring in low mats or upright, sometimes forming thickets. It reaches 2.6 to 3 meters in maximum height. The branches are often bright red in color, while the smaller twigs are yellowish, reddish, or brownish, with a coating of hairs. The leaves are generally oval in shape and have smooth or serrated margins. The shiny leaf blades are up to 5 centimeters long. The inflorescence is a catkin. The species is dioecious. Flowering occurs in May and June. The shiny leaves of this willow help distinguish it from other willows in the habitat, all of which have waxy leaves.