| ITF W100 Gifu | 04/30 06:35 | 25 | [223] 사왕카에우, 마난차야 v 카지, 하루카 [270] | 1-6,6-3,3-6 | |
| Tokyo, Singles W-ITF-JPN-18A | 04/25 01:50 | 26 | [223] 사왕카에우, 마난차야 v 우치지마, 모유카 [130] | 1-6,7-6,4-6 | |
| Tokyo, Singles W-ITF-JPN-18A | 04/24 05:45 | 25 | [223] 사왕카에우, 마난차야 v 크루니크, 알렉산드라 [110] | 6-4,2-6,6-3 | |
| ITF W35 Osaka | 04/13 02:45 | 28 | [371] Sayaka Ishii v 사왕카에우, 마난차야 [227] | 7-5,7-5 | |
| ITF W35 Osaka | 04/12 01:00 | 27 | [291] Ito, Aoi v 사왕카에우, 마난차야 [227] | 3-6,4-6 | |
| ITF W35 Osaka | 04/11 01:00 | 26 | [410] Miho Kuramochi v 사왕카에우, 마난차야 [227] | 4-6,6-3,5-7 | |
| ITF W35 Osaka | 04/10 05:05 | 25 | 사토, 히카루 v 사왕카에우, 마난차야 | 6-7,4-6 | |
| ITF W50 Kashiwa | 04/02 05:05 | 25 | 사왕카에우, 마난차야 v 무라마츠, 치히로 | 6-3,5-7,4-6 | |
| ITF W50 Kofu | 03/30 01:00 | 28 | [247] 사왕카에우, 마난차야 v 이, 야수안 [413] | 4-6,4-6 | |
| ITF W50 Kofu | 03/29 04:30 | 27 | 마나스, 마에간 v 사왕카에우, 마난차야 | 6-3,4-6,4-6 | |
| ITF W50 Kofu | 03/28 00:55 | 26 | [357] 사토, 나호 v 사왕카에우, 마난차야 [247] | 7-6,4-6,3-6 | |
| ITF W50 Kofu | 03/27 01:55 | 25 | [247] 사왕카에우, 마난차야 v 장, 수 정 [215] | 7-5,6-4 |
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.