Shirabe Kawaguchi is a male voice actor and stage actor from Tokyo, Japan. He is a member of the Himawari Theatre Group. His performance training includes classical ballet, jazz dance, tap dance, acrobatics, baton twirling, and singing. His early career included roles in live-action productions, such as the NHK serial drama Manpuku in 2019 and the NHK program Nenkin Quest in 2017. On stage, he performed as the lead role of Billy in the musical Billy Elliot in 2020 and as Myojin Yahiko in the stage adaptation of Rurouni Kenshin in 2018.

As a voice actor, Kawaguchi is known for playing Kino in the Pokétoon short film Fubuki no Natsuyasumi, also known as Blizzard on a Summer Holiday or Snorunt's Summer Vacation, which was released in 2021. He also provided the voice for the younger version of Adam in the Japanese dub of the Netflix film The Adam Project, released in 2022. Additionally, he appeared in a commercial for the mobile game One Piece Bounty Rush as part of the celebration for the One Piece anime's 25th anniversary. He is also credited with a role in the work Mimi ni Sumu Mono.