Rhododendron trichanthum (长毛杜鹃) is a rhododendron species native to western Sichuan, China, where it grows at altitudes of 1600–3700 meters. It is a shrub that typically grows to 1–3 meters in height, with leaves that are oblong-lanceolate and ovate-lanceolate, and 4–11 × 1.5–3.5 cm in size. Flowers are pale purple, rose red, or white.