Nishiyama won the Japan Shogi Association’s Annual Shogi Award for "Women's Professional Game of the Year" for the 2019 shogi year (April 2019March 2020) and the 2020 shogi year (April 2020March 2021). She won the "Excellent Women's Professional" award for the 2021 shogi year (April 2021March 2022) and the 2022 shogi year (April 2022March 2023).
