| 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.