Gao Xin (; Mandarin pronunciation: ; born 12 May 1994, in Tianjin) is a Chinese former tennis player. Gao reached a career-high singles ranking of world No. 434 on 7 November 2016, and a career-high doubles ranking of No. 203 on 2 April 2018. He reached one singles final on the ITF circuit and 45 doubles finals posting a record of 24 wins and 21 losses, including a 3–2 record in ATP Challenger Tour finals.

Career Gao was a wildcard and lost in the first round of the 2014 ATP Shenzhen Open.

In 2018, Gao played in his first ATP doubles match, when he received a wildcard entry into the main doubles draw of the 2018 Chengdu Open along with partner Te Rigele. They were defeated in the first round by Matthew Ebden and Mischa Zverev 2–6, 2–6.

The following year at the 2019 Chengdu Open he again received a wildcard entry but would capitalize on the opportunity this time, as he won his first ATP Tour match when he and partner Zhe Li defeated Denis Shapovalov and Jordan Thompson in the first round 7–5, 2–6, [10–1]. They were defeated in the quarterfinals (which was the second round) by Nikola Cacic and Dušan Lajović.

ATP Challenger and ITF Futures finals

Singles: 1 (0–1) LegendATP Challenger (0–0)ITF Futures (0–1)Finals by surfaceHard (0–1)Clay (0–0)Grass (0–0)Carpet (0–0)

ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Hong Kong F3FuturesHard Denis Yevseyev4–6, 6–1, 4–6

Doubles: 45 (24–21) LegendATP Challenger (3–2)ITF Futures (21–19)Finals by surfaceHard (22–19)Clay (2–2)Grass (0–0)Carpet (0–0)

ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1China F4, YuxiFuturesHard Yu Chang Feng Xue He Feng6–2, 3–6, [5–10]Loss0–2Japan F2, TokyoFuturesHard Yu Chang Takuto Niki Arata Onozawa6–3, 1–6, [6–10]Loss0–3Japan F3, KofuFuturesHard Yu Chang Bumpei Sato Peng Hsien-yin3–6, 7–5, [6–10]Win1–3China F6, ChengduFuturesHard Zhe Li Yu Chang Di Wu2–2 ret.Win2–3China F8, FuzhouFuturesHard Zhe Li Takuto Niki Arata Onozawa6–2, 6–3Win3–3China F10, ShenyangFuturesHard Zhe Li Yi Chu-Huan Huang Liang-chi6–4, 7–5Loss3–4Turkey F4, AntalyaFuturesHard Yu Chang Artem Smirnov Volodymyr Uzhylovskyi2–6, 4–6Win4–4China F4, FuzhouFuturesHard Zhe Li Gao Peng Gao Wan6–4, 2–6, [12–10]Loss4–5Cambodia F2, Phnom PenhFuturesHard Bowen Ouyang Robin Kern Sebastian Wagner6–3, 3–6, [5–10]Win5–5Japan F3, KofuFuturesHard Zhe Li Takashi Saito Yusuke Watanuki6–0, 6–7(4-7), [10–1]Win6–5China F2, AnningFuturesClay Bowen Ouyang Huang Liang-chi Enrique López Pérez7–6(7-3), 6–4Win7–5China F4, YuxiFuturesHard Zhe Li Kim Cheong-eui Boy Westerhof6–4, 6–4Win8–5China F6, WuhanFuturesHard Zhe Li Arata Onozawa Yan Bai7–5, 6–3Loss8–6China F7, WuhanFuturesHard Michael Geerts Yi Li-Feng Yan Bai3–6, 6–2, [15–17]Win9–6India F13, CoimbatoreFuturesHard Bowen Ouyang Mohit Mayur Jayaprakash N. Vijay Sundar Prashanth2–6, 6–3, [10–5]Win10–6India F14, ChennaiFuturesHard Bowen Ouyang Kunal Anand Markos Kalovelonis6–3, 5–7, [11–9]Win11–6Australia F6, Alice SpringsFuturesHard Zhe Li Alex Bolt Jordan Thompson2–6, 6–3, [10–1]Win12–6Australia F7, CairnsFuturesHard Li Zhe Finn Tearney Yusuke Watanuki6–1, 6-2Win13–6China F1, AnningFuturesClay Ouyang Bowen Cristian Rodríguez Tak Khunn Wang7–5, 6-3Win14–6China F8, LuanFuturesHard Bowen Ouyang Peng Hsien-yin Chuhan Wang7–5, 6-3Loss14–7France F14, Saint-GervaisFuturesClay Ouyang Bowen Louis Tessa Antoine Hoang6–3, 4–6, [6–10]Loss14–8Chengdu, ChinaChallengerHard Zhe Li Mao-Xin Gong Zhang Ze3–6, 6–4, [11–13]Loss14–9Thailand F1, Hua HinFuturesHard Yunseong Chung Chen Ti John Paul Fruttero2–6, 2-6Loss14–10Shanghai, ChinaChallengerHard Zhe Li Hsieh Cheng-peng Yi Chu-Huan6–7(6-8), 7–5, [0–10]Loss14–11Vietnam F5, Thủ Dầu MộtFuturesHard Shintaro Imai Lý Hoàng Nam Nguyễn Hoàng Thiên6–7(4-7), 6–7(4-7)Win15–11China F4, LuzhouFuturesHard Zhe Li Peng Hsien-yin Jimmy Wang4–6, 6–3, [10–6]Loss15–12China F7, WuhanFuturesHard Zhe Li Kaichi Uchida Shintaro Imai6–4, 4–6, [8–10]Win16–12China F10, KunshanFuturesHard Zhe Li He Yecong Zhang Zhizhen6–3, 6-2Win17–12China F11, ShenzhenFuturesHard Zhe Li Wu Hao Xia Zihao7–6(7-4), 6-2Win18–12Zhangjiagang, ChinaChallengerHard Zhang Zhizhen Chen Ti Yi Chu-Huan6–2, 6-3Win19–12Suzhou, ChinaChallengerHard Sun Fajing Mao-Xin Gong Zhang Ze7–6(7–5), 4–6, [10–7]Loss19–13Thailand F12, Hua HinFuturesHard Sun Fajing Chung Hong Song Min-kyu6–7(5-7), 6–3, [6–10]Loss19–14China F6, LuanFuturesHard Te Rigele Harri Heliövaara Patrik Niklas-Salminen2–6, 3-6Loss19–15China F9, ShenzhenFuturesHard Wang Aoran Song Min-kyu Nam Ji-sung6–3, 4–6, [4–10]Loss19–16Hong Kong F3FuturesHard Wang Aoran Hsu Yu Hsiou Shintaro Imai6–7(1-7), 1-6Loss19–17M25 Luzhou, ChinaWorld Tennis TourHard Sun Fajing Wu Hao Wang Aoran6–2, 1–6, [5–10]Loss19–18M25 Hong KongWorld Tennis TourHard Yeung Pak-long Sonchat Ratiwatana Sanchai Ratiwatana3–6, 6–4, [8–10]Win20–18M25 Kunshan, ChinaWorld Tennis TourHard Sun Fajing Hua Runhao Zeng Shi Hong6-2, 7–6(7-5)Loss20–19M15 Vigo, SpainWorld Tennis TourClay Wang Aoran Rafael Matos Oscar Jose Gutierrez5–7, 2–6Win21–19Shanghai, ChinaChallengerHard Sun Fajing Scott Puodziunas Marc Polmans2–6, 6–4, [10–7]Loss21–20M15 Monastir, TunisiaWorld Tennis TourHard Li Zhe Skander Mansouri Akira Santillan3–6, 0–6Win22–20M15 Monastir, TunisiaWorld Tennis TourHard Wang Aoran Stefanos Sakellaridis Dimitris Sakellaridis6–2, 6–4Win23–20M15 Monastir, TunisiaWorld Tennis TourHard Dong Bohua Wissam Abderrahman Tiago Pereira7–6 (7–5), 3–6, [10–5]Win24–20M15 Tianjin, ChinaWorld Tennis TourHard Ray Ho Li Hanwen Sun Qian3–6, 6–4, [10–8]Loss24–21M25 Fuzhou, ChinaWorld Tennis TourHard Dong Bohua Cui Jie Wang Xiaofei4–6, 4–6

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