| ITF W100 Токио | 04/25 01:50 | 26 | [223] Мананчая Савангкаев v Моюка Учиджима [130] | 1-6,7-6,4-6 | |
| ITF W100 Токио | 04/24 05:45 | 25 | [223] Мананчая Савангкаев v Александра Крунич [110] | 6-4,2-6,6-3 | |
| ITF W35 Осака | 04/13 02:45 | 28 | [371] Саяка Исии v Мананчая Савангкаев [227] | 7-5,7-5 | |
| ITF W35 Осака | 04/12 01:00 | 27 | [291] Aoi Ito v Мананчая Савангкаев [227] | 3-6,4-6 | |
| ITF W35 Осака | 04/11 01:00 | 26 | [410] Miho Kuramochi v Мананчая Савангкаев [227] | 4-6,6-3,5-7 | |
| ITF W35 Осака | 04/10 05:05 | 25 | Хикару Сато v Мананчая Савангкаев | 6-7,4-6 | |
| ITF W50 Касива | 04/02 05:05 | 25 | Мананчая Савангкаев v Чихиро Мурамацу | 6-3,5-7,4-6 | |
| ITF W50 Кофу | 03/30 01:00 | 28 | [247] Мананчая Савангкаев v Ya-Hsuan Ли [413] | 4-6,4-6 | |
| ITF W50 Кофу | 03/29 04:30 | 27 | Мэган Манассе v Мананчая Савангкаев | 6-3,4-6,4-6 | |
| ITF W50 Кофу | 03/28 00:55 | 26 | [357] Нахо Сато v Мананчая Савангкаев [247] | 7-6,4-6,3-6 | |
| ITF W50 Кофу | 03/27 01:55 | 25 | [247] Мананчая Савангкаев v Суджейонг Джанг [215] | 7-5,6-4 | |
| ITF W35 Индаур | 03/16 04:30 | 28 | [239] Мананчая Савангкаев v Далила Якупович [213] | 6-7,3-6 |
Mananchaya Sawangkaew (Thai: มนัญชญา สว่างแก้ว; born 10 July 2002) is a tennis player from Thailand.
She has a career-high singles ranking of 247 by the Women's Tennis Association (WTA), achieved on 4 December 2023. Sawangkaew has won two singles titles and one doubles title on the ITF Women's Circuit.
On the ITF Junior Circuit, she achieved a career-high combined ranking of 14, on 28 January 2019. She reached the quarterfinals of the girls' singles draw at the 2019 Australian Open.
Sawangkaew made her debut for Thailand Fed Cup team in 2019.