Mananchaya Sawangkaew (; born 10 July 2002) is a tennis player from Thailand.
Career
She has a career-high singles ranking of 267 by the Women's Tennis Association (WTA), achieved on 28 August 2023. Sawangkaew has won two singles titles and one doubles title on the ITF Women's Circuit.
On the ITF Junior Circuit, she achieved a career-high combined ranking of 14, on 28 January 2019. She reached the quarterfinals of the girls' singles draw at the 2019 Australian Open.
Sawangkaew made her debut for Thailand Fed Cup team in 2019.
ITF Circuit finals
Singles: 8 (3 titles, 5 runner-ups)
Doubles: 4 (1 title, 3 runner–ups)