The 2023 Aryna Sabalenka tennis season officially began on 4 January 2023 with the start of the Adelaide International.
During this season, Sabalenka: Won her first major title at the Australian Open. Clinched the singles No.1 ranking for the first time in her career.
Yearly summary
Early hard court sesaon
Sabalenka entered Adelaide 1 as the second seed. She reached her first final of the season by defeating Liudmila Samsonova, Markéta Vondroušová, Irina-Camelia Begu en route. Then, she defeated Czech teenage qualifier Linda Nosková to win her first title since Madrid 2021 and her 11th career title without dropping a set all week.
Sabalenka entered the Australian Open as tbe fifth seed. She defeated Tereza Martincová, Shelby Rogers, former doubles partner and 26th seed Elise Mertens, and the previous week's Adelaide 2 champion and world no. 10 Belinda Bencic to reach her first-ever Australian Open quarterfinal. She then beat Donna Vekić to reached her fourth Grand Slam semifinal, and won her tenth consecutive match by beating Magda Linette to make her first ever major final. In the final, she defeated reigning Wimbledon champion Elena Rybakina in three sets to win her first major title. She became the second Belarusian to ever win a major singles title, and the first since Victoria Azarenka, a decade ago. After winning the title in Melbourne, Sabalenka rose back to No. 2 in the WTA rankings.
In Dubai, Sabalenka defeated Lauren Davis and Jeļena Ostapenko to reach the quarterfinals, where she fell to the eventual champion Barbora Krejčíková in three sets. She then participated in Indian Wells, where she defeated Evgeniya Rodina and took revenge from Barbora Krejčíková for her last defeat in three sets. Then she beat Coco Gauff and Maria Sakkari to reach her first Indian Wells final, where she lost to Elena Rybakina in a rematch of the 2023 Australian Open final. In Miami, Sabalenka defeated Shelby Rogers, Marie Bouzková, and Barbora Krejčíková each in straight sets to reach the quarterfinals, where she was defeated by Sorana Cîrstea.
Early clay court season
Sabalenka started her clay court season in Stuttgart, where she defeated Barbora Krejčíková, Paula Badosa, and Anastasia Potapova to reach her fourth final of the year. In the final, which was a rematch of last year's final, she was defeated by world No. 1 Iga Świątek in straight sets for the second consecutive year. In Madrid, Sabalenka reached her second final at this tournament, defeating Sorana Cîrstea, Camila Osorio, Mirra Andreeva, Mayar Sherif, and Maria Sakkari, dropping just one set en route to the final. In the final, she would once again face Iga Świątek, and would win her third title of the year in three sets.
In Rome, Sabalenka would suffer her first early defeat of the year, losing in straight sets to former Grand Slam champion Sofia Kenin. At the French Open, she would reach the semifinals without dropping a set, defeating Marta Kostyuk, Iryna Shymanovich, Kamilla Rakhimova, Sloane Stephens, and Elina Svitolina. In the semifinals, she would face Karolína Muchová. Sabalenka lost this match in three sets, despite leading 5–2 and holding match point.
Grass court season
Sabalenka began her grass court season in Berlin, defeating Vera Zvonareva before losing to Veronika Kudermetova. Sabalenka next competed at Wimbledon, where she would reach her fourth straight major semifinal. Sabalenka defeated Panna Udvardy, Varvara Gracheva, Anna Blinkova, Ekaterina Alexandrova, and Madison Keys, before losing to Ons Jabeur, despite leading by a set and a break.
North American hard court season
Her next tournament would be Montréal, where she would defeat Petra Martić, before losing in three sets to eventual runner-up Liudmila Samsonova. She next reached the semifinals in Cincinnati, defeating Ann Li, Daria Kasatkina, and Ons Jabeur, before falling once again in three sets to Karolína Muchová.