Masako Katsuki (勝生 真沙子, Katsuki Masako),née Masako Shiono (塩野 雅子, Shiono Masako, born October 15, 1959, Hachinohe, Aomori), is a Japanese voice actress formerly affiliated with Theater Echo and now with 81 Produce. Following her debut in Shiroi Kiba: White Fang Monotagari as the role of Mary Scott, Katsuki has lent her voice to several notable anime, Japanese-dubbed films and tv series, games, drama CDs, narration, and commercials. Some of her best-known roles include: Maria Von Trapp in Trapp Family Story, Reccoa Londe in Zeta Gundam, Maya Kitajima in Glass Mask, Masuyo Ikari in High School! Kimengumi, Michiru Kaioh/Sailor Neptune Sailor Moon, and Tsunade in Naruto.