| Puchar Billie Jean King | 07/27 03:00 | 2 | Pei-Chi Lee v Sarah Ibrahim Khan | 6-1,6-2 | |
| Puchar Billie Jean King | 07/25 05:05 | 2 | Pei-Chi Lee v Carol Young Suh Lee | 5-7,5-7 | |
| Puchar Billie Jean King | 07/24 03:15 | 2 | Pei-Chi Lee v Sue Yan Tan | 6-0,6-4 | |
| ITF - Tainan W25 | 06/25 02:00 | 29 | [355] Ya Yi Yang v Pei-Chi Lee [462] | 6-2,6-1 | |
| ITF - Tainan W25 | 06/24 01:50 | 28 | [462] Pei-Chi Lee v Chia Yi Tsao [474] | 3-6,7-5,7-5 | |
| ITF - Tainan W25 | 06/23 02:00 | 27 | [286] Erika Sema v Pei-Chi Lee [462] | 2-6,3-6 | |
| ITF - Tainan W25 | 06/22 02:00 | 26 | Ya-Hsin Lee v Pei-Chi Lee | 2-6,0-6 | |
| ITF - Tainan W25 | 06/21 02:00 | 25 | [307] Kanako Morisaki v Pei-Chi Lee [462] | 2-6,2-6 | |
| ITF - Tainan W25 | 06/15 05:40 | 26 | Irina Fetecau v Pei-Chi Lee | 7-6,4-6,6-4 | |
| ITF - Tainan W25 | 06/14 01:50 | 25 | Tzu-Ying Tseng v Pei-Chi Lee | 0-6,0-6 | |
| ITF - Daegu W25 | 06/08 03:30 | 26 | [453] Pei-Chi Lee v Kyoka Okamura [273] | 1-6,1-6 | |
| ITF - Daegu W25 | 06/06 01:05 | 25 | [453] Pei-Chi Lee v Yeonwoo Ku [484] | 3-6,6-4,6-3 | |
| ITF - Changwon W25 | 05/31 01:00 | 25 | [453] Pei-Chi Lee v Hanna Chang [356] | 3-6,1-6 | |
| ITF - Goyang W25 | 05/23 01:00 | 25 | [448] Pei-Chi Lee v Hanna Chang [349] | 6-4,2-6,5-7 | |
| ITF - Incheon W25 | 05/18 01:00 | 26 | [454] Pei-Chi Lee v Destanee Aiava [333] | 7-6,3-6,6-7 | |
| ITF - Incheon W25 | 05/17 01:00 | 25 | Youna Kim v Pei-Chi Lee | 0-6,6-3,5-7 | |
| ITF - Fukuoka W60 | 05/11 03:25 | 26 | Sara Saito v Pei-Chi Lee | 6-0,6-3 | |
| ITF - Fukuoka W60 | 05/09 01:00 | 25 | [453] Nagi Hanatani v Pei-Chi Lee [454] | 3-6,2-6 | |
| ITF - Gifu W80 | 05/04 03:45 | 26 | [487] Pei-Chi Lee v Katie Boulter [154] | 2-6,1-6 | |
| ITF - Gifu W80 | 05/03 01:50 | 25 | [307] En Shuo Liang v Pei-Chi Lee [487] | 7-6,4-6,4-6 | |
| ITF - Gifu W80 | 05/01 06:10 | 54 | Pei-Chi Lee v Honoka Kobayashi | 6-4,7-5 | |
| ITF - Gifu W80 | 05/01 03:05 | 54 | [487] Pei-Chi Lee v Natsuho Arakawa [299] | 6-1,6-0 | |
| ITF - Fukui W15 | 04/27 01:00 | 26 | Pei-Chi Lee v Honoka Kobayashi | 3-6,6-1,5-7 | |
| ITF - Fukui W15 | 04/25 02:00 | 25 | Pei-Chi Lee v Nana Kawagishi | 6-2,6-3 | |
| ITF - Osaka W15 | 04/20 05:30 | 26 | Natsumi Kawaguchi v Pei-Chi Lee | 6-0,7-5 | |
| ITF - Osaka W15 | 04/20 02:10 | 25 | Kurea Hayasaka v Pei-Chi Lee | 2-6,3-6 | |
| ITF - Osaka W25 | 04/10 05:10 | 62 | [484] Pei-Chi Lee v Georgina Garcia-Perez [429] | 4-6,6-7 | |
| ITF - Osaka W25 | 04/10 01:00 | 62 | Pei-Chi Lee v Emerson Jones | 6-7,7-5,11-9 | |
| ITF - Kashiwa W25 | 04/03 02:45 | 19 | [466] Pei-Chi Lee v Georgina Garcia-Perez [372] | 5-7,3-6 | |
| ITF - Kofu W25 | 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.