Masumi Asano is a Japanese voice actress, singer, narrator, and children's book author born on August 25, 1977, in Akita Prefecture. She is a graduate of Kokugakuin University, where she studied Japanese Literature. Asano entered the voice acting industry in 1999 after winning an award at a voice actor training seminar during her university years, which led to her debut with the Kirakira☆Melody Academy unit.

Her career in voice acting has seen her affiliated with several agencies. She was initially with I'm Enterprise, then moved to Arts Vision in 2003, and later joined Aoni Production in 2008. Since January 2021, she has worked as a freelancer. Throughout her career, Asano has been recognized for her work, winning the Best Personality award at the very first Seiyu Awards in 2007.

Asano is known for a wide array of anime roles, demonstrating considerable range. She is particularly associated with the long-running Ikki Tousen franchise, where she voices the lead character Hakufu Sonsaku, a role she has played across multiple series including Ikki Tousen, Dragon Destiny, Great Guardians, Xtreme Xecutor, Extravaganza Epoch, and Western Wolves. Another major role is Minami Kaido, also known as Cure Mermaid, in the popular Pretty Cure franchise, specifically in Go! Princess Precure and its subsequent film appearances.

Her other notable television anime roles include Hiyono Yuizaki in Spiral: The Bonds of Reasoning, Risa Harada in D.N.Angel, Izumi Sawatari in He Is My Master, Risa Asakaze in Hayate the Combat Butler, Ayano Iida in The Pet Girl of Sakurasou, Risa Aoyanagi in Psycho-Pass, and Glynda Goodwitch in RWBY: Ice Queendom. Her filmography also features a wide variety of characters, from the magical Linith in Magical Girl Lyrical Nanoha A's to the fierce Imca in Valkyria Chronicles III and the villainous Tira in the Soulcalibur video game series.

Beyond television and film, Asano has an extensive body of work in original video animations, such as Eiken, Kowarekake no Orgel, and Kase-san and Morning Glories, and has lent her voice to numerous video games. She is also active in dubbing foreign content, providing the Japanese voice for characters like GoGo Tomago in Big Hero 6, Glynda Goodwitch in the original RWBY series, and Blake Gaines in the film San Andreas.

In addition to her performance career, Masumi Asano is also an accomplished writer and lyricist. Under a pen name, she has authored several children's books and picture books, an endeavor for which she has received literary awards, including the 13th Ohisama Taisho Highest Prize for a children's story. She also created the original manga Seiyu's Life!, which was later adapted into an anime television series. Her work as a lyricist includes writing songs for other singers. Asano was a member of the voice actor unit Aice5, led by Yui Horie, and has also been part of the musical unit milk rings.