Mirei Yamagata is a Japanese voice actress and performer born on February 27, 1979, in Hong Kong. Her background is notably international, having grown up in the United States, Germany, and Japan, and she is multilingual, speaking French, German, Italian, Chinese, Japanese, and English. Beyond voice acting, her professional work includes roles as a translator, English coach, director, and dancer.

In anime and animated projects, Yamagata's voice roles include Mitarashi in the original net animation Phantasy Star Online 2 Comic. Her other credits in anime include a role as Alice Stevenson in an episode of the television series Angel's 3Piece, and roles as Marurin and Nyakkii in the long-running children's series Shimajirō no Wow!. Her film work includes a voice role in the 2017 movie Gekijouban Shimajirou no wao!: Shimajirou to niji no oashisu.