| ITF W25 Huangshan | 08/15 03:00 | 26 | Ziyue Sun v Ya-Hsuan Lee | 0-6,6-3,6-7 | |
| ITF W25 Huangshan | 08/13 06:15 | 25 | [470] Qianqian Zhao v Ya-Hsuan Lee [421] | 3-6,2-6 | |
| ITF W25 Taipéi | 07/30 04:30 | 25 | Ya-Hsuan Lee v Sohyun Park | 2-6,6-3,3-6 | |
| 2019 Fed Cup | 06/13 06:05 | - | Ya-Hsuan Lee v Anastasiya Tursunova | 6-0,6-2 | |
| ITF W25 Incheon | 05/30 02:00 | 26 | [385] Daria Mishina v Ya-Hsuan Lee [277] | 6-3,7-6 | |
| ITF W25 Incheon | 05/29 02:20 | 25 | Yu Jin Ahn v Ya-Hsuan Lee | 5-7,1-6 | |
| ITF W25 Goyang | 05/23 05:40 | 26 | Jacqueline Cabaj Awad v Ya-Hsuan Lee | Retired | |
| ITF W25 Goyang | 05/22 01:00 | 25 | [390] Daria Mishina v Ya-Hsuan Lee [294] | 6-3,2-6,3-6 | |
| ITF W25 Changwon | 05/19 01:30 | 29 | [285] Ya-Hsuan Lee v Chanel Simmonds [349] | 3-6,5-7 | |
| ITF W25 Changwon | 05/18 03:00 | 28 | [285] Ya-Hsuan Lee v Xiaodi You [369] | 6-1,6-4 | |
| ITF W25 Changwon | 05/17 02:00 | 27 | [285] Ya-Hsuan Lee v Hanna Chang [444] | 6-2,6-0 | |
| ITF W25 Changwon | 05/16 01:00 | 26 | [285] Ya-Hsuan Lee v So-Ra Lee [301] | 6-2,6-2 | |
| ITF W25 Changwon | 05/15 01:00 | 25 | Ya-Hsuan Lee v Yeong Won Jeong | 6-0,6-2 | |
| ITF W25 Osaka | 04/09 05:00 | 25 | Ya-Hsuan Lee v Akiko Omae | 6-4,6-7,2-6 | |
| ITF W25 Kashiwa | 04/02 01:55 | 25 | [316] Haruka Kaji v Ya-Hsuan Lee [277] | 6-3,6-1 | |
| ITF W25 Kofu | 03/25 01:30 | 45 | [276] Ya-Hsuan Lee v Emina Bektas [388] | 4-6,4-6 | |
| ITF W25 Kofu | 03/25 00:30 | 45 | Ya-Hsuan Lee v Sae Haraguchi | 6-2,6-0 | |
| ITF W25 Kofu | 03/18 04:30 | 45 | [279] Ya-Hsuan Lee v Stephanie Wagner [469] | 1-6,0-6 | |
| ITF W25 Kofu | 03/18 00:30 | 45 | Ya-Hsuan Lee v Catherine Harrison | 6-3,4-6,14-12 | |
| ITF W60 Kioto | 02/20 02:00 | 25 | [279] Ya-Hsuan Lee v Akiko Omae [454] | 6-7,6-7 | |
| ITF 25 Singapur - Femenino | 01/21 03:00 | 45 | Ya-Hsuan Lee v Eudice Chong | 0-6,5-7 | |
| ITF 25 Singapur - Femenino | 01/16 03:45 | 25 | [170] Kurumi Nara v Ya-Hsuan Lee [278] | 7-5,6-4 | |
| ITF 25 Singapur - Femenino | 01/15 02:00 | 45 | [278] Ya-Hsuan Lee v Peangtarn Plipuech [283] | 6-2,6-1 | |
| ITF 25 Singapur - Femenino | 01/14 03:00 | 45 | Ya-Hsuan Lee v Ana Veselinovic | 6-3,6-3 | |
| ITF Navi Mumbai - Femenino | 12/18 14:00 | 25 | Mahak Jain v Ya-Hsuan Lee | Retired | |
| ITF Solapur - Femenino | 12/03 05:35 | 25 | [375] Rutuja Bhosale v Ya-Hsuan Lee [269] | Retired | |
| ITF Pune - Femenino | 11/27 04:30 | 25 | [86] Tamara Zidansek v Ya-Hsuan Lee [269] | 6-3,6-3 | |
| WTA China Taipéi | 11/12 03:45 | 164 | [272] Ya-Hsuan Lee v Tereza Martincova [212] | 3-6,0-6 | |
| WTA China Taipéi | 11/11 06:10 | 64 | [188] Ayano Shimizu v Ya-Hsuan Lee [272] | 4-6,4-6 | |
| ITF Liuzhou - Femenino | 10/30 05:10 | 25 | [270] Ya-Hsuan Lee v Anhelina Kalinina [109] | 6-4,3-6,3-6 |
Lee Ya-hsuan (en chino tradicional, 李亞軒: en chino tradicional, 李亞軒; nacido 20 de julio de 1995 en Taipéi) es una jugadora de tenis taiwanésa.
Lee tiene un mejor ranking de la WTA de 186, logrado el 11 de abril de 2016. Su ranking más alto de dobles es 138 logrado el 6 de febrero de 2017.
Jugando en Copa Federación para Taiwán, Lee tiene un registro de 2–13.