Tatsuya Maruyama (丸山 達也, Maruyama Tatsuya) is a Japanese politician and current governor of Shimane Prefecture.

He ran for office as an independent during the Shimane gubernatorial election in 2019, winning 43.58% of the vote.

[1] In February 2020, he criticized South Korea over territorial disputes in the Liancourt Rocks, which Japan claims is as a part of Shimane Prefecture.

Maruyama said the ROK government is “strengthening movements to make the occupation of Takeshima (Liancourt Rocks) an established fact”.

[2] He also called on the central Japanese government to give an effective response regarding the Liancourt Rocks dispute.