Kanno Sugako (?? ???, 1881–1911), also called Kanno Suga (?? ??), was a Japanese anarcho-feminist journalist.
She was the author of a series of articles about gender oppression, and a defender of freedom and equal rights for men and women.
In 1910, she was accused of treason by the Japanese government for her alleged involvement in what became known as the High Treason Incident, aimed at the assassination of Emperor Meiji.
Kanno was executed by hanging on January 25, 1911, at the age of 29.
She was the first woman with the status of political prisoner to be executed in the history of modern Japan.