Aryna Siarhiejeŭna Sabalenka (Belarusian: Арына Сяргееўна Сабаленка; Russian: Арина Сергеевна Соболенко, Arina Sergeyevna Sobolenko, born 5 May 1998) is a professional tennis player from Belarus. She rose to prominence after leading the Belarus Fed Cup team to a runner-up finish in 2017 with Aliaksandra Sasnovich, despite both of them being ranked outside the top 75 at the time. Sabalenka won her first two Women's Tennis Association (WTA) titles in 2018 at the Premier level Connecticut Open and the Premier 5 level Wuhan Open. She has a career-high WTA ranking of No. 11 in the world, which she achieved in October 2018.
Sabalenka is a native of Minsk. She was unheralded as a junior and relatively unknown before her Fed Cup success as a teenager. Following the 2017 Fed Cup, she began having more success on the WTA Tour, reaching four finals in 2018 to go along with eight top ten victories. Sabalenka has a very aggressive style of play, often accumulating high numbers of winners and unforced errors. With her height, she also has a very strong serve.