Masayasu Yamasaki

is a Japanese politician of the Centrist Reform Alliance, who serves as a member of the House of Representatives.

Early years Yamasaki was born in Kōchi, Kōchi Prefecture. After graduating from Chukyo University in March 1993, he worked as a junior high school teacher in Kōchi Prefecture. In 2010, he completed his graduate studies at Naruto University of Education.

Political career In 2019, Yamasaki ran for the Kōchi Prefectural Assembly as a Komeito candidate and won.

In September 2020, Komeito announced Yamasaki would run in Shikoku PR in next general election as Noritoshi Ishida's successor.

On 31 August 2021, Yamasaki resigned as a member of the Kōchi Prefectural Assembly.

In the 2021 general election, Yamasaki won a seat in the PR.

In the 2024 general election, Yamasaki won a seat in the PR block.

In January 2026, CDP and Komeito merged into Centrist Reform Alliance (CRA). Yamasaki joined CRA.

In the 2026 general election, Yamasaki run as a CRA candidate and won a seat in the PR.