Ann Li (born June 26, 2000) is an American professional tennis player. She has a career-high singles ranking by the WTA of world No. 25, achieved on 19 October 2026, and a best doubles ranking of No. 134, achieved on 30 March 2026. She has won two singles titles on the WTA Tour, one singles title on the WTA Challenger Tour, and three titles on the ITF Women's Circuit.
Li was a finalist at the junior competition of the 2017 Wimbledon Championships.
Li was born into a sports family. Her father, who played soccer in college, is from Changchun, while her mother, who ran track in college, is from Suzhou. Her aunt was a professional speed skater in China.
2017–2018: Juniors, professional debut
Li reached her first Junior Grand Slam singles final in 2017 at Wimbledon. In the first all-American girls' final since 1979, the unseeded Li lost to third seed Claire Liu, in three sets. Two weeks later, Li won her first professional title on the ITF Circuit, a $15k tournament in Evansville, Indiana.
Li entered the Lexington Open where she defeated Renata Zarazúa, Julia Glushko, Anastasia Nefedova, Jessica Pegula, before losing to Asia Muhammad, in straight sets.
She participated at the Landisville Challenge where she defeated former British No. 1, Heather Watson, and Wimbledon finalist, Sabine Lisicki, but lost to Madison Brengle in the quarterfinals. In the ITF Templeton Pro, she eliminated fellow wildcard Sophia Whittle but lost to Sofya Zhuk. She tried to qualify for the 2018 US Open but lost to Marie Bouzková. She then entered an ITF event in Texas where she lost to Naomi Broady. Her best result after the US Open was at Stockton where she beat Jovana Jakšić and Lauren Davis, before yet again falling to Madison Brengle. In Templeton, she won against Nicole Gibbs before losing to Hailey Baptiste.
2020: Major debut and third round, top 100
At the Australian Open, Li played made her Grand Slam tournament debut, after qualifying for the main draw. She advanced to the second round, where she lost to the eventual champion, Sofia Kenin.
Li reached the third round of a major for the first time in her career at the US Open defeating 13th seed Alison Riske en route, before her run was ended by 17th seed Angelique Kerber. She reached the top 100 at world No. 97, on 9 November 2020.
2021: First WTA Tour title, major third round, top 50
Li reached a third round of a Grand Slam championship for the second time at the Australian Open, losing to seventh seed Aryna Sabalenka. She also reached the second round at the French Open on her debut at this major, at which point she lost to fifth seed Elina Svitolina.
Li won her maiden WTA Tour title at the Tenerife Ladies Open, defeating Camila Osorio in the final, in straight sets. With this title, her ranking rose into the top 50 for the first time, reaching a new career-high of No. 48 on 25 October 2021. In November, she was nominated on the list for the "2021 WTA Newcomer of the Year".
2022–2023: WTA 1000 third round
At the 2022 Miami Open, Li reached the third round of a WTA 1000 for the first time defeating third seed Anett Kontaveit, before losing to Alison Riske.
In June, Li made the second round at Wimbledon, overcoming Lucia Bronzetti for her first win at this major. Li lost to Marie Bouzková.
Li qualified for the 2023 Cincinnati Open where she defeated Magda Linette in the first round, before losing to second seed Aryna Sabalenka. She also made it through qualifying at the Guadalajara Open, but lost in the first round of the main draw to Sloane Stephens.
2024: First WTA 125 title and WTA 250 final