无柄杜鹃（学名：Rhododendron watsonii）为杜鹃花科杜鹃属下的一个种。

Rhododendron watsonii (无柄杜鹃) is a rhododendron species native to southern Gansu and western Sichuan in China, where it grows at altitudes of 2500–3000 meters. It is a shrub or small tree that grows to 1.5–6 m in height, with leathery leaves that are oblong-elliptic to broadly oblanceolate or obovate, 10–33 by 4–10 cm in size. Flowers are white.