Tsugumasa Muraoka

is a Japanese politician who is governor of the Yamaguchi Prefecture since 2014.

Born in Ube, Yamaguchi, he attended Ube City Nishigiwa Elementary School, Nishigiwa Middle School, and Yamaguchi Prefectural Ube High School. At the last of these, he became the president of the student council in his second year and founded a band inspired by the American singer Prince. He graduated from the University of Tokyo, Faculty of Economics.

On July 27, 2017, he announced that he would run for reelection in the 2018 Yamaguchi gubernatorial election and that he would be joining the Liberal Democratic Party. He was elected for his second term after beating Yuzuru Kumano and for a third term after contesting the 2022 Yamaguchi gubernatorial election. He was elected for a fourth term in the 2026 Yamaguchi gubernatorial election.