Yūsaku Mori

is a Japanese actor with credited acting roles in several film and television works, including series like Beppinsan and Alice in Borderland and films like Plan 75 and Shin Ultraman. Before deciding to take up an acting career, he intended to become an interpreter in English, living and studying at the Brittin College in Manchester, England, He stated in an interview in 2015 that he felt "anger" in a scene where people were killed in the battlefield, drawing attention to the then-recruitment of young men by ISIS and how his generation of Japanese men had not experienced war.

Other minor or supporting roles in notable films were his characterizations in the 2017 kaiju film Shin Godzilla and the 2022 dystopian movie Plan 75, as well as the superhero film Shin Ultraman that same year.

In 2025, Mori won the Best Supporting Actor Award at the Japanese Movie Critics Awards for his role in the film Missing of director Keisuke Yoshida and starring actress Satomi Ishihara.