Nanaho Katsuragi is a Japanese actress and voice actor affiliated with the agency 81 Produce. She was born on December 20, 1966, in Aichi Prefecture. Before entering the voice acting industry, Katsuragi had a decade-long career on the stage. After graduating from university, she enrolled in the Takarazuka Music School in 1985 and joined the renowned all-female Takarazuka Revue in 1987. As a member of the revue's Snow Troupe, she performed as a male-role specialist, a path for which her distinctive, husky voice was well-suited. She was a classmate of several actresses who would become top stars, including Yuki Amami. Katsuragi left the Takarazuka Revue in 1997 to pursue a new career in voice acting.

In voice acting, Katsuragi has built a substantial body of work across television animation, OVAs, and video games. One of her most enduring roles is Yoko Hazama in the long-running mecha anime franchise Sōkyū no Fafner, a part she has played in the television series, including Fafner in the Azure and Fafner Exodus, as well as in multiple films like Fafner: Behind the Line and Fafner: Heaven and Earth. Another prominent early role was the character Cloud in the 1997 anime series Yume no Crayon Oukoku. She also voiced Ravioli in Chō Hatsumei Boy Kanipan. Her film work includes the role of Yoriko Yoshino in the 2020 anime film Sekai Ichi Hatsukoi - The World’s Greatest First Love ~Proposal-hen~.

Throughout her career, Katsuragi has taken on a wide variety of roles. She is known to many for her long-running portrayal of Seki-sensei, a teacher in the beloved magical girl series Ojamajo Doremi and its sequels. In video games, she is the voice of the character Setsuka in the Soulcalibur series. Her other notable anime roles include Kudamon in Digimon Savers, Venus Kamiyama in Kamisama Kazoku, and Uranus in MÄR. She has also done voice work for live-action dubbing, such as providing the Japanese voice for Abby Sciuto in the long-running series NCIS. Her career demonstrates a consistent presence in the industry since the late 1990s, voicing characters in numerous popular and long-running franchises.