is a Japanese professional tennis player who specializes in doubles. She reached a career-high doubles ranking of world No. 4 on 28 February 2022. Her best doubles results at the majors are the final at the 2023 Australian Open, the semifinals at 2013, 2021 and 2026 Wimbledon Championships and at the 2026 French Open. She also reached the semifinals of the 2021 WTA Finals. She has won 21 titles on the WTA Tour.

Aoyama has also won four singles and 30 doubles titles on the ITF Women's Circuit. Her career-high singles ranking is No. 182, achieved on 9 February 2015.

Personal life Aoyama started playing tennis at age 9. She studied at Waseda University in Japan and turned professional, after graduating from the university. Her favorite surface in tennis is grass.

Career 2007–12: First steps: WTA Tour title in doubles Aoyama made her ITF Women's Circuit debut in the doubles event at Gifu in 2007. In March 2009, she won her first ITF title at the $10k Kōfu doubles event. In June 2010, she won her first singles ITF title at Tokyo.

In October 2010 at the Japan Women's Open, she made her WTA Tour qualifying singles and main draw doubles debut. She failed to qualify in singles and had more success in doubles, reaching her first WTA Tour final. In late November 2010, she won the $75k Toyota doubles event. In June 2011, she made her WTA Tour singles debut at the Birmingham Classic as a qualifier. At the 2011 Wimbledon Championships, she made her major debut in doubles. At the 2012 Washington Open, she won her first career title in doubles. In September 2012 she won the $100k Ningbo Challenger. During the 2012 season, she also won two $50k events, the Lexington Challenger and the Bronx Open.

2013–17: Wimbledon semifinal, Wuhan final As time passed, Aoyama became mainly a doubles player, playing in doubles events preferentially to singles. She made a strong start into the 2013 season reaching the semifinal in the first week of January at the Shenzhen Open. Soon after, she won her first match in a major at the Australian Open, but then lost in the second round playing with Irina Falconi. In March, she won the Malaysian Open with Chang Kai-chen. She also had a strong start into the grass-court season, reaching the semifinals at the Rosmalen Championships. She achieved more success at Wimbledon, when she and Chanelle Scheepers reached semifinals. This was her first significant major result. In the semifinal match, they lost to Hsieh Su-wei and Peng Shuai. In September, she won the Washington Open for the second year in a row. At the end of the year, she reached semifinals of the Korea Open and won the Toyota World Challenge.

During the next three seasons she did not have as good performances as in the 2013 season. In 2014, in singles, her only significant result came at the end of the year, when she reached the final of the Toyota World Challenge but lost to An-Sophie Mestach. In doubles, she won the Washington Open for the third year in a row. Later in October, she won the Japan Women's Open. During the year, she also had success on the ITF Women's Circuit. In May, she won the $50k Fukuoka International with Eri Hozumi, and later finished as runner-up at both the $50k Lexington Challenger and the $75k Toyota World Challenge. In the first week of the 2015 season, she reached the final at the Auckland Open with Renata Voráčová, they lost to Sara Errani and Roberta Vinci. A month later, she reached the final of the Thailand Open with Tamarine Tanasugarn. She then did not have significant results until September, before she reached semifinals at the Korea Open, and later winning two $100k events, in Nanjing and Tokyo. During 2016, she won one WTA Tour doubles title at the Japan Women's Open, and finished runner-up at the Nuremberg Cup, Washington Open and Jiangxi International Open. She also won three $50k events, in Quanzhou, Shenzhen and Wuhan.

She won her fourth title in Washington D.C. with Renata Voráčová. Later in September, she reached the third round at the US Open with Yang Zhaoxuan, upsetting sixth seeds and Roland Garros finalists Ashleigh Barty and Casey Dellaqua.

2019: New partnership with Shibahara Shuko Aoyama played her first tournament with compatriot Ena Shibahara in August at the Silicon Valley Classic in San Jose, where they reached the final. Shibahara said, "Our chemistry was spot on from the beginning, where I would set her up from the baseline and she just moves all over the net".

Shibahara and Aoyama played five more tournaments together in 2019, winning their first two titles at the Tianjin Open and Kremlin Cup in Moscow.

2020–21: Major & WTA Finals semifinals, Olympics & top 5 debuts Aoyama reached the 2020 French Open quarterfinals, partnering Shibahara. She won her maiden WTA 1000 title at the 2021 Miami Open. The Japanese pair represented Japan at the 2020 Summer Olympics, where they lost in the first round to eventual silver medalists Belinda Bencic and Viktorija Golubic. Aoyama also reached the semifinals at Wimbledon and of the WTA Finals, seeded No. 2. She won four more titles, three being at the WTA 500 level, during 2021 with Shibahara.

2022: World No. 4, Australian Open semifinal Aoyama continued the partnership with Shibihara for the tournaments at the beginning of the year in Australia. At the Australian Open, they improved on their quarterfinal result the previous year by reaching the semifinal. Following this result, Aoyama reached her highest doubles ranking of world No. 4, on 28 February 2022.

For the three other majors during the year Aoyama partnered with Chan Hao-ching, reaching the quarterfinal stage at Wimbledon, and the third round at the US Open, losing to the eventual winners Krejčíková and Siniaková. Her final competition was at the Billie Jean King Cup where Aoyama and Shibahara won each of the six doubles matches they played.

2023: Australian Open finalist, 30th tour final, back to top 10 At the Australian Open, she reached the semifinals of a major for the fourth time in her career, again with Shibahara. The pair defeated second-seeded pair of Americans Coco Gauff and Jessica Pegula in the semifinal to reach their first major final. However, they were defeated in straight sets by defending champions Krejčíková and Siniaková.

She won her 18th title at the Rosmalen Open and the WTA 1000 title at the Canadian Open, partnering Shibahara.

Aoyama returned to the top 10 on 23 October 2023. The pair qualified for the 2023 WTA Finals for the second time with a seeding of No. 3, but lost in the round robin stage.

2024–26: Major semifinals and WTA 250 title, back to top 25

Partnering with Eri Hozumi, Aoyama won the doubles title at the 2024 Pan Pacific Open, defeating Ena Shibahara and Laura Siegemund in the final. The pair were runners-up at the Hong Kong Open, losing to Ulrikke Eikeri and Makoto Ninomiya in the final which went to a deciding champions tiebreak.

At the 2026 French Open, partnering Liang En-shuo, she reached the semifinals for the first time, defeating Guo Hanyu and Kristina Mladenovic. Aoyama and Liang then entered the Rosmalen Open, which they went on to win. As a result, she returned the top 30 in the doubles rankings on 15 June 2026.

At the next major in Wimbledon, she again reached the semifinals with Liang defeating nine seeds Ellen Perez and Demi Schuurs.

Performance timelines

Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup and Olympic Games are included in win–loss records.

Doubles Current through the 2026 Wimbledon Championships. Tournament20102011201220132014201520162017201820192020202120222023202420252026SRW–LWin %Grand Slam tournaments Australian OpenAAA2R1R1R1R1R3R2R3RQFSFF2R2R2R0 / 1420–14 French OpenAAA1R2R1RA1R1R1RQF2R1R2R1R2RSF0 / 1311–13 WimbledonA1RQ2SF3R1R2R2R2R2RNHSFQF1R1R1RSF0 / 1421–14 US OpenA1RA1R1R1R1R3R2R2R2R3R3R1R1R3R0 / 1411–14Win–loss0–00–20–05–43–40–41–33–44–43–45–310–49–46–41–44–49–30 / 5563–55Year-end championships WTA Finals DNQNHSF DNQ0 / 12–2 WTA Elite Trophy DNQF DNQ NH RR0 / 22–4National representation Summer OlympicsNHANHANH1RNH2RNH0 / 21–2WTA 1000Dubai / Qatar OpenAAA2RAAAA1R1R1RASF2R3R2RA0 / 88–8Indian Wells OpenAAAA1R1RAQF2R1RNHSF1RSF2R1RA0 / 1010–10Miami OpenAAAAA1RA2R2R2RNHW1R1R2R1R1R1 / 109–9Madrid OpenAAAAAAAA1R2RNH1R2R1R1R1RA0 / 72–7Italian OpenAAA1RA2RA1R1RQFSFSFQFQF1R1RA0 / 1113–11Canadian OpenAAAAAAA1RQF2RNH2R1RW1RQF1 / 811–7Cincinnati OpenAAA1RAAA2R2R1R2RQF1R1R1R2R0 / 106–10Guadalajara Open NH2R2RNH0 / 22–2Pan Pacific / Wuhan OpenAAAAAAAFSF1RNH1R2R0 / 58–5China OpenAAAAAA1R1R1RSFNH1R1R2R0 / 74–7WTA career statisticsTournaments17619141315232729112124283226Total: 296Titles0012201203150210Total: 20Finals1012224324151530Total: 36Overall win–loss3–16–76–521–1815–1212–1317–1424–2118–2836–2617–1039–1736–2437–2724–2917–2620 / 296326–278Win %Overall: Year-end ranking17890873450705029422622523124747$2,896,597

Grand Slam tournament finals Doubles: 1 (runner-up) ResultYearChampionshipSurfacePartnerOpponentsScoreLoss 2023Australian Open Hard Ena Shibahara Barbora Krejčíková Kateřina Siniaková 4–6, 3–6

Other significant finals WTA Elite Trophy Doubles: 1 (runner–up) ResultYearLocationSurfacePartnerOpponentsScoreLoss 2018Zhuhai, China Hard (i) Lidziya Marozava Lyudmyla Kichenok Nadiia Kichenok 4–6, 6–3, [7–10]

WTA 1000 tournaments Doubles: 3 (2 titles, 1 runner-up) ResultDateTournamentSurfacePartnerOpponentsScoreLoss 2017Wuhan Open Hard Yang Zhaoxuan Chan Yung-jan Martina Hingis 6–7(5), 6–3, [4–10]Win 2021Miami Open Hard Ena Shibahara Hayley Carter Luisa Stefani 6–2, 7–5Win 2023Canadian Open Hard Ena Shibahara Desirae Krawczyk Demi Schuurs 6–4, 4–6, [13–11]

WTA Tour finals Doubles: 38 (21 titles, 17 runner-ups) LegendGrand Slam (0–1)Elite Trophy (0–1)WTA 1000 (2–1)WTA 500 (6–4)WTA 250 (13–10)Finals by surfaceHard (17–15)Grass (4–1)Clay (0–1)