Mizuka Arima is a Japanese voice actress born on January 16, 1948, in Kagoshima Prefecture. She is affiliated with the talent management firm Arts Vision. Arima is a graduate of the literary座 training institute, which provided her with a foundation in the performing arts before she began her voice acting career in the 1970s. Earlier in her career, she was also known by the stage name Mizuko Arima.

Her career encompasses a wide range of roles in anime, OVAs, video games, and foreign language dubbing. In anime, some of her notable performances include the role of Fusa in the 1992 film Senbon Matsubara: Kawa to Ikiru Shōnen-tachi. She is also recognized for voicing Rose Aplovar in the OVA and subsequent adaptations of Brave King GaoGaiGar Final, and Empress Zara in the series Bio Armor Ryger (titled 獣神雷牙 in Japanese). Her other prominent roles include东堂明香 in六三四之剑, the grandmother in the long-running series我们这一家, and坪井校长 in全金属狂潮? 校园篇. In her later career, she has frequently been cast in roles portraying elderly women. She continues to be active in the industry, with recent work including the role of Setsu-baa in the 2024 anime 喂！蜻蜓.

A recurring theme in her career is her versatility, playing characters ranging from dignified empresses and villains to warm-hearted mothers and grandmothers. Her work is not limited to animation; she has an extensive portfolio in voice dubbing for numerous Western films and television series, lending her voice to Japanese-language versions of movies such as Die Hard 2, Legally Blonde, and I Am Sam. Her contributions to the industry are marked by her long-running presence and the breadth of her work, making her a familiar voice to audiences across multiple decades. Her personal interests include mountain climbing.