Tadao Umesao (梅棹 忠夫, Umesao Tadao, June 13, 1920 – July 3, 2010) was a Japanese anthropologist.

A professor for decades at Kyoto University, he was also among the founders and the director-general of National Museum of Ethnology in Osaka, Japan.

A number of Umesao's theories were influential on anthropologists, and his work was also well known among the general population of Japan.

Major Publications in Japanese Publications in other languages: