| ITF - W35 Osaka | 04/12 01:00 | 27 | [371] Sayaka Ishii v Ya-Hsuan Lee [320] | 6-4,6-2 | |
| ITF - W35 Osaka | 04/11 01:00 | 26 | [320] Ya-Hsuan Lee v Sara Saito [236] | 4-6,7-6,7-6 | |
| ITF - W35 Osaka | 04/10 04:00 | 25 | Ya-Hsuan Lee v Miyu Nakashima | 6-3,6-1 | |
| ITF - W50 Kashiwa | 04/07 01:55 | 29 | [237] Sijia Wei v Ya-Hsuan Lee [356] | 6-1,7-5 | |
| ITF - W50 Kashiwa | 04/06 01:05 | 28 | [384] Ena Shibahara v Ya-Hsuan Lee [356] | 6-7,3-6 | |
| ITF - W50 Kashiwa | 04/05 03:15 | 27 | [356] Ya-Hsuan Lee v Sofia Costoulas [285] | 6-1,6-2 | |
| ITF - W50 Kashiwa | 04/04 01:30 | 26 | Ya-Hsuan Lee v Chihiro Muramatsu | 6-4,6-3 | |
| ITF - W50 Kashiwa | 04/02 03:25 | 25 | [239] Ankita Raina v Ya-Hsuan Lee [356] | 6-7,6-4,6-7 | |
| ITF - W50 Kōfu | 03/31 02:00 | 29 | [413] Ya-Hsuan Lee v Catherine Harrison [501] | 7-6,1-6,1-6 | |
| ITF - W50 Kōfu | 03/30 01:00 | 28 | [247] Mananchaya Sawangkaew v Ya-Hsuan Lee [413] | 4-6,4-6 | |
| ITF - W50 Kōfu | 03/29 04:20 | 27 | [246] Sara Saito v Ya-Hsuan Lee [413] | 2-6,6-4,4-6 | |
| ITF - W50 Kōfu | 03/28 02:30 | 26 | [413] Ya-Hsuan Lee v Talia Gibson [206] | 6-4,6-1 |
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.