Rhododendron traillianum (川滇杜鹃) is a rhododendron species native to southwest Sichuan, southeast Xizang, and northwest Yunnan, China, where it grows at altitudes of 3000–4300 meters. It is a shrub or small tree that grows to 2–8 m in height, with leaves that are oblong-lanceolate to elliptic, 5–12 by 2.5–5 cm in size. Flowers are white to pink, with crimson spots and purple-red basal flecks.