is a Japanese tennis player.
On 9 October 2023, she has achieved career-high rankings of 346 in singles, and on 29 June 2026 of 230 in doubles.
Kawaguchi and her partner Adrienn Nagy won the 2019 Australian girls' doubles title, beating Emma Navarro and Chloe Beck in the final.
She qualified for the main draw of the WTA 500 2023 Pan Pacific Open at home in Tokyo but had to withdraw shortly after.
ITF Circuit finals Singles: 6 (4 titles, 2 runner-ups) LegendW60 tournamentsW35 tournamentsW15 tournaments ResultW–LDateTournamentTierSurfaceOpponentScoreWin 1–0 Apr 2019ITF Cancún, MexicoW15 Hard Emily Appleton 7–6(2), 6–7(2), 6–3Loss 1–1 Oct 2021ITF Monastir, TunisiaW15 Hard Tamira Paszek 2–6, 3–6Win 2–1 Mar 2023ITF Hinode, JapanW15 Hard Aoi Ito 6–4, 6–3Win 3–1 Apr 2023ITF Osaka, JapanW15 Hard Miho Kuramochi 6–4, 6–1Win 4–1 May 2023Fukuoka International, JapanW60 Carpet Katie Boulter w/oLoss 4–2 Oct 2025Brisbane QTC International, AustraliaW35 Hard Taylah Preston 2–6, 4–6
Doubles: 16 (7 titles, 9 runner-ups) LegendW75 tournamentsW40/50 tournamentsW25/35 tournamentsW15 tournaments ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 Apr 2019ITF Cancún, MexicoW15 Hard Maya Tahan Emily Appleton María Portillo Ramírez 6–1, 6–2Loss 1–1 Dec 2019ITF Cancún, MexicoW15 Hard Nika Kukharchuk Madison Appel Elle Christensen w/oLoss 1–2 Jun 2023ITF Tokyo, JapanW25 Hard Talia Gibson Luksika Kumkhum Kanako Morisaki 6–1, 2–6, [3–10]Loss 1–3 Jul 2023ITF Hong Kong, ChinaW40 Hard Kanako Morisaki Eudice Chong Cody Wong 5–7, 4–6Win 2–3 Oct 2023ITF Hamamatsu, JapanW25 Carpet Hiromi Abe Haruna Arakawa Aoi Ito 3–6, 6–4, [10–4]Loss 2–4 Dec 2023ITF Yokohama, JapanW40 Hard Aoi Ito Liang En-shuo Tang Qianhui w/oWin 3–4 Aug 2024ITF Nakhon Si Thammarat, ThailandW15 Hard Momoko Kobori Honoka Kobayashi Yukina Saigo 6–3, 6–4Loss 3–5 Aug 2024ITF Nakhon Si Thammarat, ThailandW35 Hard Momoko Kobori Kanako Morisaki Hikaru Sato 2–6, 3–6Loss 3–6 Jul 2025ITF Nakhon Pathom, ThailandW15 Hard Haruna Arakawa Kim Na-ri Ye Qiuyu 3–6, 2–6Win 4–6 Aug 2025ITF SingaporeW15 Hard Haruna Arakawa Natsuho Arakawa Anri Nagata 6–2, 6–2Loss 4–7 Sep 2025ITF Nakhon Pathom, ThailandW35 Hard Erika Sema Mana Ayukawa Eri Shimizu 2–6, 7–6(5), [8–10]Win 5–7 Sep 2025ITF Yeongwol, South KoreaW15 Hard Kim Da-bin Ha Sun-min Shek Cheuk-ying 6–4, 6–2Win 6–7 Oct 2025Brisbane QTC International, AustraliaW35 Hard Monique Barry Tenika McGiffin Naho Sato 7–5, 6–3Loss 6–8 Nov 2025Yokohama Challenger, JapanW50 Hard Hayu Kinoshita Dang Yiming You Xiaodi 6–2, 3–6, [4–10]Win 7–8 Feb 2026Queensland International, AustraliaW75 Hard Sara Saito Gabriella Da Silva-Fick Tenika McGiffin 6–2, 6–4Loss 7–9 Jun 2026ITF Taipei, TaiwanW35 Hard Ayano Shimizu Back Da-yeon Tsao Chia-yi 5–7, 1–6
Junior finals Grand Slam tournaments Girls' doubles ResultYearTournamentSurfacePartnerOpponentsScoreWin 2019 Australian Open Hard Adrienn Nagy Emma Navarro Chloe Beck 6–4, 6–4
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