Hirari Mizui (水井 ひらり, Mizui Hirari, born 22 July 2000) is a Japanese badminton player.

[1] She was the girls' singles bronze medalist at the 2017 Asian Junior Championships.

[2] Mizui participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina.

She won the bronze medal in the mixed badminton team event.

[3] Girls' singles Women's singles This biographical article relating to Japanese badminton is a stub.