Rhododendron thomsonii (半圆叶杜鹃) is a rhododendron species native to northern India, Bhutan, Nepal, Sikkim, and southern Xizang in China, where it grows at altitudes of 3000–4000 meters. It is a shrub that grows to 2–4 m in height, with leathery leaves that are oblong-elliptic to ovate or orbicular to obovate, 3–7 by 2–6 cm in size. Flowers are red.