Hsu Dau-lin (Chinese: 徐道鄰; pinyin: Xú Dàolín; December 4, 1907 – December 24, 1973) was a distinguished legal scholar who made substantial contributions to the study of Tang and Song Law and, especially for new republican states, of Constitutional Law. He devoted his prime years to the service of China as government official and as diplomat, and spent his later years teaching Chinese legal history in Taiwan, and Chinese literature and philosophy in America.