Zhang Kailin (Chinese: 张恺琳; pinyin: Zhāng Kǎilín; Mandarin pronunciation: [ʈʂáŋ kʰàɪ lǐn]; born 28 January 1990) is a former tennis player from China.

Zhang has won one doubles title on WTA 125 tournaments along five singles and 15 doubles titles on the ITF Circuit.

On 12 September 2016, she reached her best singles ranking of world No.

Partnering Han Xinyun, Zhang won her first $50k tournament in April 2014 at the ITF event in Anning, defeating Varatchaya Wongteanchai and Zhang Ling in the final.

Three months later, again on the side of Han, Zhang won her second $50k title in Wuhan.