Kako Kawaguchi (河口 華子, born 14 July 1999) is a Japanese water polo player.

She was selected to the Japan women's national water polo team, for the 2020 Summer Olympics.

[1][2] She participated at the 2015 All Japan Water Polo Championship, 2019 FINA Junior Water Polo World Championships,[3] and 2019 FINA Women's Water Polo World League.

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