Iizuka Mayumi (飯塚雅弓; born January 3, 1977, in Tokyo) is a Japanese voice actress and J-pop singer who has also worked as an actress and disc jockey.
She entered 劇団若草 in 1980 and made her child-actor debut on January 11, 1981 in the TBS Sunday drama 『春のうららの物語』. From 1983 to 1987, while living in Taiwan, she paused her entertainment work. After returning, she resumed acting, made her voice-acting debut in 1991 in 『おもひでぽろぽろ』, and later graduated from 法政大学法学部 in 1999.
In 1997, she became widely known through 『ポケットモンスター』, where she voiced カスミ. That same year, on August 27, 1997, she made her singer debut with the album 『かたおもい』 and also began hosting 『週刊アニメージュ 飯塚雅弓のまだまだ日曜日だよ!』. In 1998, she gave her first concert at 東京国際フォーラム ホールA.
Her music releases have been associated with Lantis, and she has also used the alias Hoshi Mai for singing activities. Her official website is berrysmile.net. In April 2026, Yahoo! News featured her in a story describing her as a Pokémon voice actress. Among her anime songs, she performed "Laplace ni Notte (ラプラスにのって)," the ED of "Pokémon".
