| ITF - Nonthaburi W50 | 01/12 02:55 | 27 | [452] Misaki Matsuda v Mananchaya Sawangkaew [266] | 6-4,4-6,1-6 | |
| ITF - Nonthaburi W50 | 01/11 04:50 | 26 | [373] Aoi Ito v Mananchaya Sawangkaew [266] | 7-6,2-6,3-6 | |
| ITF - Nonthaburi W50 | 01/10 03:00 | 25 | [307] Diana Marcinkevica v Mananchaya Sawangkaew [266] | 3-6,2-6 | |
| ITF - Nonthaburi W50 | 01/03 05:50 | 25 | [266] Mananchaya Sawangkaew v Ena Shibahara [14] | 3-6,6-7 | |
| ITF - Yokohama W40 | 12/01 03:10 | 27 | [249] Mananchaya Sawangkaew v Ayano Shimizu [368] | 6-0,4-6,3-6 | |
| ITF - Yokohama W40 | 11/30 02:25 | 26 | Mananchaya Sawangkaew v Mei Yamaguchi | 6-4,6-4 | |
| ITF - Yokohama W40 | 11/29 06:55 | 25 | [215] Anastasia Tikhonova v Mananchaya Sawangkaew [249] | 6-7,6-1,3-6 | |
| ITF - Takasaki W100 | 11/22 01:30 | 25 | [120] Harriet Dart v Mananchaya Sawangkaew [248] | 6-2,6-1 | |
| ITF - Takasaki W100 | 11/21 03:10 | 54 | [248] Mananchaya Sawangkaew v Aoi Ito [427] | 4-6,4-6 | |
| ITF - Takasaki W100 | 11/20 01:00 | 54 | Mananchaya Sawangkaew v Himari Sato | 6-1,6-3 | |
| ITF - Takasaki W100 | 11/17 06:00 | 27 | [263] Mananchaya Sawangkaew v En Shuo Liang [294] | 5-7,6-3,2-6 | |
| ITF - Takasaki W100 | 11/16 05:20 | 26 | [89] Linda Fruhvirtova v Mananchaya Sawangkaew [263] | 3-6,6-7 | |
| ITF - Takasaki W100 | 11/15 01:00 | 25 | [263] Mananchaya Sawangkaew v Ya Yi Yang [216] | 7-6,7-5 | |
| ITF - Takasaki W100 | 11/13 07:45 | 54 | [263] Mananchaya Sawangkaew v Miho Kuramochi [452] | 6-2,6-4 | |
| ITF - Takasaki W100 | 11/13 02:55 | 54 | [263] Mananchaya Sawangkaew v Eri Shimizu [442] | 6-7,6-3,6-4 | |
| ITF - Qian Daohu W25 | 10/28 02:00 | 28 | Mananchaya Sawangkaew v Anastasiia Gureva | 6-1,4-6,5-7 | |
| ITF - Qian Daohu W25 | 10/27 02:00 | 27 | Mananchaya Sawangkaew v Meiqi Guo | 6-1,6-4 | |
| ITF - Qian Daohu W25 | 10/26 01:55 | 26 | [270] Mananchaya Sawangkaew v Shuo Feng [224] | 6-3,6-2 | |
| ITF - Qian Daohu W25 | 10/25 06:00 | 25 | Mananchaya Sawangkaew v Sofia Shapatava | 6-1,6-2 | |
| ITF - Shenzhen W100 | 10/17 05:35 | 25 | [264] Mananchaya Sawangkaew v Hong Yi Cody Wong [347] | 6-2,1-6,3-6 | |
| ITF - Nakhon Si Thammarat W25 | 09/09 02:00 | 28 | [231] Anastasia Zakharova v Mananchaya Sawangkaew [267] | 6-7,6-4,6-1 | |
| ITF - Nakhon Si Thammarat W25 | 09/08 03:50 | 27 | [267] Mananchaya Sawangkaew v Aliona Falei [415] | 6-0,6-2 | |
| ITF - Nakhon Si Thammarat W25 | 09/07 04:30 | 26 | [267] Mananchaya Sawangkaew v Punnin Kovapitukted [331] | 6-3,6-3 | |
| ITF - Nakhon Si Thammarat W25 | 09/05 02:00 | 25 | Mananchaya Sawangkaew v Vaidehi Chaudhari | 6-4,6-4 | |
| ITF - Nakhon Si Thammarat W25 | 09/01 04:10 | 27 | [402] Daria Lodikova v Mananchaya Sawangkaew [267] | 7-5,6-4 | |
| ITF - Nakhon Si Thammarat W25 | 08/31 06:15 | 26 | [475] Anchisa Chanta v Mananchaya Sawangkaew [267] | 1-6,2-6 | |
| ITF - Nakhon Si Thammarat W25 | 08/30 02:00 | 25 | [326] Zongyu Li v Mananchaya Sawangkaew [267] | 6-7,6-3,3-6 | |
| ITF - Hongkong W40 | 08/27 02:00 | 29 | [303] Mananchaya Sawangkaew v Ya Yi Yang [288] | 3-6,6-4,3-6 | |
| ITF - Hongkong W40 | 08/26 01:50 | 28 | [303] Mananchaya Sawangkaew v Kyoka Okamura [286] | 6-0,6-7,6-3 | |
| ITF - Hongkong W40 | 08/25 02:00 | 27 | [233] Eudice Chong v Mananchaya Sawangkaew [303] | 4-6,3-6 |
Mananchaya Sawangkaew (ur. 10 lipca 2002) – tajska tenisistka, reprezentantka kraju w rozgrywkach Pucharu Billie Jean King.