Yuki Naito (内藤 祐希, Naitō Yūki; born 16 February 2001) is a Japanese tennis player. Naito has been ranked as high as world No. 169 in singles and No. 224 in doubles by the Women's Tennis Association (WTA).
On the ITF Junior Circuit, Naito's career-high ranking was world No. 15.
In November 2016, she won the doubles tournament of the Ando Securities Open in Tokyo, partnering Rika Fujiwara. The pair defended their title the following year.
Naito made her WTA Tour main-draw debut as a qualifier at the 2021 Winners Open in Romania.
Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup and Olympic Games are included in win–loss records.
Singles: 16 (7 titles, 9 runner-ups)
Doubles: 22 (11 titles, 11 runner-ups)
Junior Grand Slam tournament finals
Yuki Naito at the Women's Tennis Association