| ITF Women Hong Kong | 01/04 02:00 | 27 | Ya-Hsuan Lee v Mai Hontama | 6-1,6-2 | |
| ITF Women Hong Kong | 01/03 04:00 | 26 | Ya-Hsuan Lee v Eudice Chong | 6-4,6-4 | |
| ITF Women Hong Kong | 01/01 02:00 | 25 | Ya-Hsuan Lee v Yuki Kristina Chiang | 6-3,6-2 | |
| WTA - Taiwan | 11/15 12:50 | 25 | [116] Viktorija Golubic v Ya-Hsuan Lee [327] | 6-2,7-5 | |
| WTA - Hong Kong | 10/09 07:00 | 25 | [43] Samantha Stosur v Ya-Hsuan Lee [303] | 6-3,4-6,6-1 | |
| ITF Women Nonthaburi | 10/03 05:15 | 25 | Ya-Hsuan Lee v Xin Yu Wang | 6-7,6-3,1-6 | |
| ITF Women Yeongwol | 09/08 03:15 | 27 | [282] Ya-Hsuan Lee v Pei-Chi Lee [309] | Retired | |
| ITF Women Yeongwol | 09/07 03:10 | 26 | Ya-Hsuan Lee v Yu Jin Ahn | 6-2,6-2 | |
| ITF Women Yeongwol | 09/06 03:45 | 25 | Ya-Hsuan Lee v Linnea Malmqvist | 4-6,6-3,7-6 | |
| ITF Women Chiswick | 08/08 11:25 | 25 | [283] Ya-Hsuan Lee v Elixane Lechemia [390] | 5-7,1-6 | |
| ITF Women Woking | 08/03 13:00 | 27 | Ya-Hsuan Lee v Mihaela Buzarnescu | 3-6,0-6 | |
| ITF Women Woking | 08/02 09:30 | 26 | [274] Ya-Hsuan Lee v Elixane Lechemia [392] | 6-2,6-0 | |
| ITF Women Woking | 08/01 13:25 | 25 | [274] Ya-Hsuan Lee v Freya Christie [385] | 7-6,6-1 | |
| ITF Women Goyang | 05/26 03:50 | 27 | Ya-Hsuan Lee v Haruka Kaji | Retired | |
| ITF Women Goyang | 05/25 02:40 | 26 | Ya-Hsuan Lee v Min-Hwa Yu | 6-1,6-3 | |
| ITF Women Goyang | 05/23 01:00 | 25 | [273] Ya-Hsuan Lee v Pei-Chi Lee [275] | 6-3,6-1 | |
| ITF Women Incheon | 05/20 02:00 | 28 | [189] Luksika Kumkhum v Ya-Hsuan Lee [274] | 6-1,7-6 | |
| ITF Women Incheon | 05/19 03:40 | 27 | [274] Ya-Hsuan Lee v Danielle Lao [289] | 5-7,6-4,6-0 | |
| ITF Women Incheon | 05/18 02:00 | 26 | [274] Ya-Hsuan Lee v Martina Caregaro [439] | 6-4,6-2 | |
| ITF Women Incheon | 05/17 02:00 | 25 | Ya-Hsuan Lee v Haruka Kaji | 6-0,6-2 | |
| 2017 Fed Cup | 04/23 09:20 | - | [110] Sara Errani v Ya-Hsuan Lee [298] | 3-6,6-2,6-3 | |
| 2017 Fed Cup | 04/22 11:30 | - | [221] Martina Trevisan v Ya-Hsuan Lee [298] | 2-6,6-3,12-10 | |
| ITF Women Nanning | 04/16 02:00 | 29 | [242] Zarina Diyas v Ya-Hsuan Lee [300] | 6-2,6-3 | |
| ITF Women Nanning | 04/15 02:30 | 28 | [300] Ya-Hsuan Lee v Xinyun Han [120] | 6-1,6-2 | |
| ITF Women Nanning | 04/14 03:55 | 27 | [464] Qianhui Tang v Ya-Hsuan Lee [300] | 4-6,2-6 | |
| ITF Women Nanning | 04/13 03:40 | 26 | [300] Ya-Hsuan Lee v Akiko Omae [193] | 6-1,5-7,6-2 | |
| ITF Women Nanning | 04/11 02:00 | 25 | Si Qi Liu v Ya-Hsuan Lee | 2-6,1-6 | |
| ITF Women Kashiwa | 04/04 04:25 | 25 | [281] Ya-Hsuan Lee v Yuuki Tanaka [353] | 5-7,6-7 | |
| ITF Women Yokohama | 03/10 04:50 | 27 | [258] Junri Namigata v Ya-Hsuan Lee [268] | Retired | |
| ITF Women Yokohama | 03/09 02:15 | 26 | [268] Ya-Hsuan Lee v Laura Robson [208] | 6-4,6-2 |
Lee Ya-hsuan (Chinese: 李亞軒; born 20 July 1995) is a Taiwanese tennis player.
She has career-high WTA rankings of 186 in singles, achieved on 11 April 2016, and 138 in doubles, set on 6 February 2017.
Playing for the Chinese Taipei Fed Cup team, Lee has a win–loss record of 3–13.