Xenia Knoll (born 2 September 1992 in Biel) is a Swiss tennis player.
Knoll has won two doubles titles on the WTA Tour, as well as one doubles title at the WTA 125K series, and two singles and 21 doubles titles on the ITF Women's Circuit.
On 23 March 2015, she reached her career-high singles ranking of world No.
254.
On 17 April 2017, she peaked at No.
40 in the doubles rankings.
Knoll made her WTA Tour debut at the 2013 Budapest Grand Prix with a direct entry into the main draw, losing in straight sets to the former world-ranked number 11 Shahar Pe'er of Israel.Playing for the Swiss Team at the Fed Cup, Knoll has a win–loss record of 0–1.