Megumi Yamaguchi is a Japanese actress and voice actress from Tokyo who is affiliated with the Himawari Theatre Group. She debuted as an actress in 2002, playing a role in the television series First Love, and later appeared in several television series and commercials. Her first voice acting role in an anime was as the character Lulu in the anime television series Michiko & Hatchin. She is known for her roles as Hifumi Takimoto in the anime television series New Game!, Lynn Hughes in Wise Man's Grandchild, and Koharu Nanakura in Aikatsu Stars!.