| ITF - Hua Hin W25 | 10/14 02:55 | 27 | Mananchaya Sawangkaew v Zhuoxuan Bai | 2-6,4-6 | |
| ITF - Hua Hin W25 | 10/13 04:50 | 26 | Mananchaya Sawangkaew v Natalia Siedliska | 6-3,6-2 | |
| ITF - Hua Hin W25 | 10/11 09:55 | 25 | Lesley P Kerkhove v Mananchaya Sawangkaew | 4-6,4-6 | |
| ITF - Hua Hin W25 | 10/08 03:55 | 28 | Mananchaya Sawangkaew v Zhuoxuan Bai | 1-6,1-6 | |
| ITF - Hua Hin W25 | 10/07 07:30 | 27 | Mananchaya Sawangkaew v Ekaterina Reyngold | 6-4,6-1 | |
| ITF - Hua Hin W25 | 10/06 05:30 | 26 | Mananchaya Sawangkaew v Emily Welker | 7-6,6-7,7-6 | |
| ITF - Hua Hin W25 | 10/04 03:25 | 25 | Peangtarn Plipuech v Mananchaya Sawangkaew | 6-3,3-6,4-6 | |
| ITF - Chiang Rai W15 | 06/19 02:00 | 29 | Mananchaya Sawangkaew v Naho Sato | 4-6,2-6 | |
| ITF - Chiang Rai W15 | 06/18 04:40 | 28 | Punnin Kovapitukted v Mananchaya Sawangkaew | 2-6,3-6 | |
| ITF - Chiang Rai W15 | 06/17 02:00 | 27 | Mananchaya Sawangkaew v Patcharin Cheapchandej | 7-6,5-7,6-3 | |
| ITF - Chiang Rai W15 | 06/16 07:10 | 26 | Mananchaya Sawangkaew v Kamonwan Buayam | 6-1,6-2 | |
| ITF - Chiang Rai W15 | 06/15 01:50 | 25 | Gozal Ainitdinova v Mananchaya Sawangkaew | 3-6,2-6 | |
| ITF - Norman W15 | 10/13 17:30 | 25 | Mia Kupres v Mananchaya Sawangkaew | 6-4,7-6 | |
| ITF - Lubbock W15 | 10/02 17:00 | 28 | Adriana Reami v Mananchaya Sawangkaew | 6-1,3-6,7-6 | |
| ITF - Lubbock W15 | 10/01 16:30 | 27 | Mananchaya Sawangkaew v Layne Sleeth | Retired | |
| ITF - Lubbock W15 | 09/30 15:00 | 26 | Mananchaya Sawangkaew v Ayumi Miyamoto | 6-0,6-1 | |
| ITF - Lubbock W15 | 09/29 17:00 | 25 | Mananchaya Sawangkaew v Carmen Corley | 6-3,6-3 | |
| ITF - Fort Worth W25 | 09/20 14:00 | 54 | Mananchaya Sawangkaew v McCartney Kessler | 6-7,2-6 | |
| ITF - Jodhpur W25 | 02/20 06:05 | 26 | Berfu Cengiz v Mananchaya Sawangkaew | 6-0,7-5 | |
| ITF - Jodhpur W25 | 02/19 08:35 | 25 | Ekaterina Nikiforova v Mananchaya Sawangkaew | 4-6,4-6 | |
| WTA Hua Hin | 02/08 09:40 | 45 | Chihiro Muramatsu v Mananchaya Sawangkaew | 3-6,6-0,6-3 | |
| ITF - Nonthaburi W25 | 02/05 05:40 | 25 | Bibiane Schoofs v Mananchaya Sawangkaew | Retired | |
| ITF - Nonthaburi W25 | 02/04 02:30 | 44 | Mananchaya Sawangkaew v Ying Zhang | 4-6,6-3,10-6 | |
| ITF - Nonthaburi W25 | 02/03 04:35 | 44 | Mananchaya Sawangkaew v Jiho Shin | 6-3,6-0 | |
| ITF - Nonthaburi W25 | 02/02 08:25 | 44 | Mananchaya Sawangkaew v Maria Filimonikhina | 6-0,6-0 | |
| ITF - Nonthaburi W25 | 01/29 04:20 | 25 | Mananchaya Sawangkaew v Leonie Kung | 6-4,2-6,3-6 | |
| ITF - Nonthaburi W25 | 01/28 02:30 | 44 | Katarzyna Kawa v Mananchaya Sawangkaew | 2-6,2-6 | |
| ITF - Nonthaburi W25 | 01/27 02:30 | 44 | Ying Zhang v Mananchaya Sawangkaew | 3-6,2-6 | |
| ITF - Nonthaburi W25 | 01/26 03:50 | 44 | Natthapat Piwbangruk v Mananchaya Sawangkaew | 2-6,1-6 | |
| ITF - Pune W25 | 12/09 05:30 | 54 | Mananchaya Sawangkaew v Punnin Kovapitukted | 1-6,7-6,10-12 |
Mananchaya Sawangkaew (ur. 10 lipca 2002) – tajska tenisistka, reprezentantka kraju w rozgrywkach Pucharu Billie Jean King.