Jil Belén Teichmann (born 15 July 1997) is a Swiss professional tennis player. She has been ranked by the Women's Tennis Association (WTA) as high as world No. 21 in singles and No. 73 in doubles. She has won two singles titles and one doubles title on the WTA Tour along with one doubles title on WTA 125 tournaments, plus six singles and five doubles titles on the ITF Women's Circuit.
A former junior world No. 3, Teichmann won a Grand Slam title in the girls' doubles event at the 2014 US Open. That year, she also won a gold medal for Switzerland in mixed doubles at the Summer Youth Olympics in Nanjing.
Her breakthrough as a senior player came in May 2019 when she won her first WTA title in Prague. In July of that year, she won another WTA tournament title after making her first top-10 win over Kiki Bertens. She continued progressing, in March 2021 reaching the semifinals of the WTA 1000 Dubai Championships. With these performances she entered the top 50. Later that year, she reached the final of the Cincinnati Open, a WTA 1000 event, defeating Naomi Osaka, Belinda Bencic, and Karolína Plíšková, before falling to world No. 1, Ashleigh Barty.
Personal life and background
Jil Teichmann was born on 15 July 1997 to mother Regula and father Jacques. She was born and raised in Barcelona, but her parents are from Zürich. Despite being born in Barcelona, Teichmann does not have a Spanish passport. In her youth, she tried various sports but then decided to play tennis on the professional level. She speaks five different languages: German, Spanish, English, French, and Catalan.