Wakako Matsumoto (松本 和香子 Matsumoto Wakako, born April 1, 1961), better known by the stage name Kujira (くじら Kujira), is a Japanese voice actress from the Tokyo Metropolis area. She is employed by 81 Produce.
Kujira's distinctive voice is described as hoarse and androgynous. Thus, many of her characters are middle-aged. Her best-known roles are Otose of Gin Tama and Orochimaru, an antagonist of Naruto.