Moyuka Uchijima (内島 萌夏, Uchijima Moyuka; born 11 August 2001) is a Japanese professional tennis player.
She has a career-high singles ranking of world No. 47, achieved on 5 May 2025, and a best doubles ranking of 86, reached on 21 July 2025. She has won one WTA Tour doubles title and two WTA 125 singles titles along with 13 titles in singles and eleven in doubles on the ITF Circuit.
2023-2024: Major debut, first WTA Tour doubles title
For her major debut, Uchijima received a wildcard from the 2023 Australian Open, but lost in the first round to Bernarda Pera.
She won three consecutive titles on the ITF Circuit in May 2024, reaching a career-high of world No. 80 on 20 May 2024 and making her the Japanese number-one female singles player for the first time.
Uchijima qualified for the 2024 French Open, making her debut at this major and defeated fellow qualifier Irene Burillo Escorihuela in the first round. She lost in the second round to the second seed, Aryna Sabalenka, in straight sets, ending a run of 19 consecutive professional match wins for Uchijima.
She qualified for the 2024 Canadian Open and recorded her first WTA 1000 win, over Viktoriya Tomova, before losing to sixth seed Liudmila Samsonova. As a result, she reached a new career-high ranking of No. 59, on 12 August 2024.
Making her debut at the US Open in 2024, Uchijima defeated Tamara Korpatsch in the first round, before losing her next match to Jule Niemeier.
In September at the WTA 250 Thailand Open 2, Uchijima reached her first WTA Tour doubles final partnering with Eudice Chong, but lost to top seeds Anna Danilina and Irina Khromacheva in the championship match.
Partnering Guo Hanyu, she won her maiden WTA Tour doubles title at the 2024 Jiangxi Open, defeating Katarzyna Piter and Fanny Stollár in the final.
2025: First WTA 1000 quarterfinal
Ranked world No. 63, Uchijima defeated Magda Linette to reach the second round at the Australian Open, where she lost to 14th seed Mirra Andreeva in a match which went to a deciding set tiebreak.
In February, at the Dubai Championships, Uchijima qualified for the main draw and recorded her first win against a top-30 ranked opponent by defeating world No. 26, Jeļena Ostapenko, before losing in the second round to sixth seed Elena Rybakina.
At the Madrid Open in April, Uchijima reached her first WTA 1000 quarterfinal with wins over wildcard entrant Robin Montgomery and 26th seed Ons Jabeur, then defeating world No. 3, Jessica Pegula, for her first victory over a top-25 ranked player, before overcoming 21st seed Ekaterina Alexandrova in the fourth round. She lost in the last eight to 17th seed Elina Svitolina.
Uchijima then went almost four months without registering a Tour-level singles win until finally ending her slump by defeating Olga Danilović at the US Open, after saving seven match points, before losing to Barbora Krejčíková in the second round.
Uchijima won her maiden WTA 125 singles title at the Antalya Challenger 1, defeating Anhelina Kalinina in the final, in straight sets. At the Open de Saint-Malo, she claimed her second WTA 125 singles trophy with a three-set win over top seed Tereza Valentová in the final.
Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup, United Cup, Hopman Cup and Olympic Games are included in win–loss records.
Current through the 2026 Wimbledon Championships.