Mayumi Yamaguchi (山口眞弓) (born May 12, 1975) is a seiyu from Iwata Prefecture. Her Forte is playing Cool Big Sis and Kid Hero characters who tend to be the Only Sane Man of the group.
Notable roles by Mayumi Yamaguchi:
- Mike and David in Chi's New Address
- Gabumon in Digimon Adventure and Digimon Adventure 02
- Jianliang Lee in Digimon Tamers
- Omegamon (with Chika Sakamoto) in Digimon Tamers: The Adventurer's Battle
- MetalGarurumon X in Digimon X-Evolution
- Jianliang Lee in Digimon Tamers
- Gachagiri in Dennou Coil
- Envy in Fullmetal Alchemist (2003 series, darrin'd by Minami Takayama in Brotherhood)
- Forte Stollen in Galaxy Angel
- Leon in Ojamajo Doremi
- Grandice/Grenmah in Granado Espada
