Wang Xin (; born 10 November 1985) is a retired badminton player from China and former World No. 1 women's singles player. She was awarded as Best Female Players of the Year by the BWF in 2010. Wang represented China in the 2012 Summer Olympics and had to forfeit the match in the bronze medal playoff game against Saina Nehwal of India in which she was 21–18, 1–0 up, due to a knee injury.