Tatsuo Sato (佐藤 剛男, Satō Tatsuo, 19 July 1937 – 23 January 2013) was a Japanese politician of the Liberal Democratic Party who served as a member of the House of Representatives in the Diet (national legislature).

He attended the University of Tokyo and passed the bar exam while in the school.

Upon graduation in 1961, he joined the Ministry of International Trade and Industry.

Leaving the ministry in 1987, he ran unsuccessfully for the House of Representatives in 1990.

This article about a Japanese politician born in the 1930s is a stub.