Mihoko Iwasa

is a Japanese women's professional shogi player ranked 1-kyū.

Early life and training group player Iwasa was born in Gifu, Japan on August 15, 2005. She learned how to play shogi as a fourth-grade student due the influence of her older brothers. She subsequently began attending a local shogi school and had become good enough to enter the Tōkai branch of the Japan Shogi Association's training group system as a fifth-grade elementary school student.

Iwasa qualified for women's professional status after being promoted to training group B2 in December 2021. She applied for women's professional status and her application was accepted by the Japan Shogi Association; she was granted women's professional status on February 1, 2022.

2-kyū: February 1, 2022 1-kyū: April 1, 2023

Note: All ranks are women's professional ranks.