Momoko Miyashiro is a Japanese voice actress born on May 9 in Saitama Prefecture, Japan. She stands 152 cm tall and is affiliated with the talent management agency Stay Luck. Her career as a voice actor began in the 2020s. In 2019, she entered the Follow-Up training school, and in 2022, she officially joined Stay Luck. Her special skills include singing and dancing, while her hobbies are karaoke, walking, and cosplay.

Miyashiro has built a career through numerous supporting roles in a wide range of anime series. Her notable voice roles include Yura Nikami in the series Wandance, a dance anime based on the manga by Coffee. She also voices Nine Kurosu in the long-running franchise Beyblade X, which began in 2023, as well as its continuation, Beyblade X Shin Mirai Hen. In the anime adaptation of the popular sports manga Medalist, she portrays Kanna Kitora. Her other significant roles include Ai in Girls Band Cry, a classroom teacher in the supernatural series Sanda, and a female student in Please Put Them On, Takamine-san. Earlier in her career, she performed minor roles such as a female audience member in Oshi no Ko, a brothel servant girl in The Apothecary Diaries, and an assistant robot in the second season of Tower of God. Her film work includes a voice role as Shanti in the Fate/strange Fake television special.