Quercus pachyloma, commonly known as (), is a species of oak tree native to southern China and Taiwan. It is placed in the section Cyclobalanopsis within the Quercus subgenus Cerris.
Quercus pachyloma is native to southern China, including the provinces of Fujian, Guangdong, Guangxi, Guizhou, Hainan, Jiangxi, and Yunnan, and the main island of Taiwan. It grows in wet forests in valleys or on mountain slopes at altitudes of above sea level.
Quercus pachyloma is a tree up to 17 meters tall. Twigs are covered with orange-brown hairs. Leaves can be as much as 14 cm long.