Masako Yanagi (柳 昌子, Yanagi Masako, born 11 November 1959) is a Japanese former women's singles tennis and doubles tennis player.

She was the top ranked player in Japan in 1979 and was ranked as high as number 89 in the world.

[1] She reached the third round of the 1988 French Open[1] and also played in the Australian Open.

Yanagi 4 singles and 6 doubles finals.

[3] Masako Yanagi played 1982 one singles and two doubles ITF Independent Tour finals.