Jiang Xinyu (Chinese: 蒋欣玗; pinyin: Jiǎng Xīnyú; Mandarin pronunciation: [tɕjàŋ ɕín y̌]; born 3 March 1999) is an inactive Chinese tennis player. On 29 May 2017, she achieved a career-high singles ranking of world No. 561. On 2 April 2018, she peaked at No. 88 in the doubles rankings. Jiang has won two doubles titles on the WTA Tour and 14 doubles titles on the ITF Circuit. Jiang won her biggest title to date in 2017 at the Jiangxi International in Nanchang, partnering Tang Qianhui, and then successfully defended it the following year.