| Billie Jean King Cup | 07/27 03:00 | 2 | Pei-Chi Lee v Sarah Ibrahim Khan | 6-1,6-2 | |
| Billie Jean King Cup | 07/25 05:05 | 2 | Pei-Chi Lee v Carol Young Suh Lee | 5-7,5-7 | |
| Billie Jean King Cup | 07/24 03:15 | 2 | Pei-Chi Lee v Sue Yan Tan | 6-0,6-4 | |
| ITF - W25 Tainan | 06/25 02:00 | 29 | [355] Ya Yi Yang v Pei-Chi Lee [462] | 6-2,6-1 | |
| ITF - W25 Tainan | 06/24 01:50 | 28 | [462] Pei-Chi Lee v Chia Yi Tsao [474] | 3-6,7-5,7-5 | |
| ITF - W25 Tainan | 06/23 02:00 | 27 | [286] Erika Sema v Pei-Chi Lee [462] | 2-6,3-6 | |
| ITF - W25 Tainan | 06/22 02:00 | 26 | Ya-Hsin Lee v Pei-Chi Lee | 2-6,0-6 | |
| ITF - W25 Tainan | 06/21 02:00 | 25 | [307] Kanako Morisaki v Pei-Chi Lee [462] | 2-6,2-6 | |
| ITF - W25 Tainan | 06/15 05:40 | 26 | Irina Fetecau v Pei-Chi Lee | 7-6,4-6,6-4 | |
| ITF - W25 Tainan | 06/14 01:50 | 25 | Tzu-Ying Tseng v Pei-Chi Lee | 0-6,0-6 | |
| ITF - W25 Daegu | 06/08 03:30 | 26 | [453] Pei-Chi Lee v Kyoka Okamura [273] | 1-6,1-6 | |
| ITF - W25 Daegu | 06/06 01:05 | 25 | [453] Pei-Chi Lee v Yeonwoo Ku [484] | 3-6,6-4,6-3 | |
| ITF - W25 Changwon | 05/31 01:00 | 25 | [453] Pei-Chi Lee v Hanna Chang [356] | 3-6,1-6 | |
| ITF - W25 Goyang | 05/23 01:00 | 25 | [448] Pei-Chi Lee v Hanna Chang [349] | 6-4,2-6,5-7 | |
| ITF - W25 Incheon | 05/18 01:00 | 26 | [454] Pei-Chi Lee v Destanee Aiava [333] | 7-6,3-6,6-7 | |
| ITF - W25 Incheon | 05/17 01:00 | 25 | Youna Kim v Pei-Chi Lee | 0-6,6-3,5-7 | |
| ITF - W60 Fukuoka | 05/11 03:25 | 26 | Sara Saito v Pei-Chi Lee | 6-0,6-3 | |
| ITF - W60 Fukuoka | 05/09 01:00 | 25 | [453] Nagi Hanatani v Pei-Chi Lee [454] | 3-6,2-6 | |
| ITF - W80 Gifu | 05/04 03:45 | 26 | [487] Pei-Chi Lee v Katie Boulter [154] | 2-6,1-6 | |
| ITF - W80 Gifu | 05/03 01:50 | 25 | [307] En Shuo Liang v Pei-Chi Lee [487] | 7-6,4-6,4-6 | |
| ITF - W80 Gifu | 05/01 06:10 | 54 | Pei-Chi Lee v Honoka Kobayashi | 6-4,7-5 | |
| ITF - W80 Gifu | 05/01 03:05 | 54 | [487] Pei-Chi Lee v Natsuho Arakawa [299] | 6-1,6-0 | |
| ITF - W15 Fukui | 04/27 01:00 | 26 | Pei-Chi Lee v Honoka Kobayashi | 3-6,6-1,5-7 | |
| ITF - W15 Fukui | 04/25 02:00 | 25 | Pei-Chi Lee v Nana Kawagishi | 6-2,6-3 | |
| ITF - W15 Osaka | 04/20 05:30 | 26 | Natsumi Kawaguchi v Pei-Chi Lee | 6-0,7-5 | |
| ITF - W15 Osaka | 04/20 02:10 | 25 | Kurea Hayasaka v Pei-Chi Lee | 2-6,3-6 | |
| ITF - W25 Osaka | 04/10 05:10 | 62 | [484] Pei-Chi Lee v Georgina Garcia-Perez [429] | 4-6,6-7 | |
| ITF - W25 Osaka | 04/10 01:00 | 62 | Pei-Chi Lee v Emerson Jones | 6-7,7-5,11-9 | |
| ITF - W25 Kashiwa | 04/03 02:45 | 19 | [466] Pei-Chi Lee v Georgina Garcia-Perez [372] | 5-7,3-6 | |
| ITF - W25 Kofu | 03/30 01:00 | 26 | [466] Pei-Chi Lee v Na-Lae Han [183] | 0-6,2-6 |
Lee Pei-chi (Chinese: 李珮琪; born 16 October 1994) is a Taiwanese professional tennis player.
Lee has won 11 singles and 20 doubles titles on the ITF Circuit. On 31 March 2014, she reached her best singles ranking of world No. 389. On 22 May 2023, she peaked at No. 216 in the doubles rankings.
Lee made her WTA Tour main-draw debut at the 2016 Taiwan Open in the singles and doubles competitions.