Naho Sato (born 23 January 2001) is a Japanese tennis player.
Sato has been ranked as high as world No. 451 in singles and 296 in doubles by the Women's Tennis Association (WTA). On the ITF Junior Circuit, Naito's career-high ranking is world No. 7 (March 2018).
In 2018, she was runner-up in the junior women's doubles at Roland Garros, along with her compatriot Yuki Naito, after losing the final against Caty McNally and Iga Świątek.
At the 2018 Youth Olympic Games held in Buenos Aires, she won the silver medal in women's doubles, along with Naito. In the women's doubles final, Naito and Sato were defeated by the Slovenian Kaja Juvan and the Polish Iga Świątek, who competed in the mixed team modality owned by the Youth Olympians.
At the 2019 Summer Universiade held in Naples, Italy, she won the gold medal in women's singles and a bronze medal in women's doubles, along with Kanako Morisaki.
ITF Circuit finals
Singles: 5 (4 titles, 1 runner up)
Doubles: 13 (9 titles, 4 runner ups)
Junior Grand Slam finals
Doubles: 1 (runner-up)