Rhododendron siderophyllum (锈叶杜鹃) is a rhododendron species native to Guizhou, Sichuan and Yunnan, China, where it grows at altitudes of 1800–3000 meters. It is a shrub that grows to 1–4 m in height, with leaves that are elliptic or elliptic-lanceolate, 3–7 by 1.2–3.5 cm in size. Flowers range from white to pink to pale purple or red.