Mariko Fuji is a Japanese actress and voice actress born on June 18, 1955, in Tokyo, Japan. Her real name is Fujiwara Mari. While she has had an extensive career in live-action film and television, her most prominent and well-documented voice acting role in anime is from the late 1970s.

Fuji provided the voice for the titular character in the 1979 anime television special Anne's Diary: The Story of Anne Frank. This Nippon Animation production, directed by Eiji Okabe, is an adaptation of the real-life diary of Anne Frank, a Jewish girl hiding from the Nazis during World War II. Her performance as Anne Frank stands as a significant credit in her career as a voice actor.

Beyond this specific voice role, Fuji's career has been primarily focused on live-action acting. She has appeared in numerous Japanese television dramas and films from the 1980s through the 2020s. Some of her notable live-action credits include roles in the long-running television series Doctor-X, the drama And Then There Were None, and the 1991 Taiga drama Taiheiki. Information about other anime voice acting roles, recurring collaborations with specific directors or studios in the voice acting industry, or major awards specifically for her voice work is not documented in the available sources.