ITF W25 Nonthaburi | 05/24 04:00 | 27 | Mananchaya Sawangkaew v Akiko Omae | Retired | |
ITF W25 Nonthaburi | 05/23 03:00 | 26 | Simona Waltert v Mananchaya Sawangkaew | 4-6,6-1,4-6 | |
ITF W25 Nonthaburi | 05/22 03:00 | 25 | Mananchaya Sawangkaew v Mahak Jain | 6-1,7-5 | |
ITF W25 Nonthaburi | 05/21 04:10 | 54 | Alana Parnaby v Mananchaya Sawangkaew | 2-6,0-6 | |
ITF W25 Nonthaburi | 05/20 05:55 | 54 | Ashley McKenzie v Mananchaya Sawangkaew | 1-6,0-6 | |
ITF W15 Sharm El Sheikh | 04/06 08:00 | 28 | Mananchaya Sawangkaew v Magali Kempen | 6-4,1-6,2-6 | |
ITF W15 Sharm El Sheikh | 04/05 08:00 | 27 | Mananchaya Sawangkaew v Maria Daniels Sierra | 6-3,6-2 | |
ITF W15 Sharm El Sheikh | 04/04 08:00 | 26 | Mananchaya Sawangkaew v Barbora Miklova | 6-2,7-5 | |
ITF W15 Sharm El Sheikh | 04/03 10:40 | 25 | Nadja Gilchrist v Mananchaya Sawangkaew | 2-6,4-6 | |
ITF W15 Sharm El Sheikh | 03/28 08:00 | 26 | Anastasia Kulikova v Mananchaya Sawangkaew | 6-4,6-2 | |
ITF W15 Sharm El Sheikh | 03/26 08:00 | 25 | Mai Napatt Nirundorn v Mananchaya Sawangkaew | 2-6,2-6 | |
2019 Fed Cup | 02/06 05:00 | 1 | Zarina Diyas v Mananchaya Sawangkaew | 6-1,6-3 | |
ITF Women Hua Hin | 12/05 03:00 | 26 | Bunyawi Thamchaiwat v Mananchaya Sawangkaew | 7-6,7-5 | |
ITF Women Hua Hin | 12/04 03:00 | 25 | Dolavee Tumthong v Mananchaya Sawangkaew | 2-6,3-6 | |
ITF Women Hua Hin | 11/30 03:00 | 28 | Mananchaya Sawangkaew v Nudnida Luangnam | 7-5,0-6,3-6 | |
ITF Women Hua Hin | 11/29 03:00 | 27 | Bunyawi Thamchaiwat v Mananchaya Sawangkaew | 1-6,7-5,6-7 | |
ITF Women Hua Hin | 11/28 03:00 | 26 | Chie Kezuka v Mananchaya Sawangkaew | 4-6,0-6 | |
ITF Women Hua Hin | 11/27 04:25 | 25 | Ashmitha Easwaramurthi v Mananchaya Sawangkaew | 0-6,4-6 | |
ITF Women Hua Hin | 06/06 04:05 | 26 | Mananchaya Sawangkaew v Shuyue Ma | 6-7,1-6 | |
ITF Women Hua Hin | 06/05 05:15 | 25 | Ivana Jorovic v Mananchaya Sawangkaew | Retired | |
ITF Women Hua Hin | 05/12 02:30 | 29 | Bunyawi Thamchaiwat v Mananchaya Sawangkaew | Retired | |
ITF Women Hua Hin | 05/11 02:30 | 28 | Mananchaya Sawangkaew v Zuzana Zlochova | 3-6,6-1,6-0 | |
ITF Women Hua Hin | 05/10 04:30 | 27 | Mananchaya Sawangkaew v Nudnida Luangnam | 6-1,6-2 | |
ITF Women Hua Hin | 05/09 03:20 | 26 | Mananchaya Sawangkaew v Yi Tsen Cho | 6-1,2-6,6-2 | |
ITF Women Hua Hin | 05/07 08:55 | 25 | Zeel Desai v Mananchaya Sawangkaew | 6-2,5-7,1-6 | |
ITF Women Hua Hin Qual | 04/30 02:30 | 44 | Mananchaya Sawangkaew v Xinyu Cai | 6-2,2-6,0-6 | |
ITF Women Hua Hin Qual | 04/29 06:00 | 44 | Mananchaya Sawangkaew v Chanikarn Silakul | 6-2,7-5 | |
ITF Women Hua Hin | 07/24 04:00 | 25 | Gozal Ainitdinova v Mananchaya Sawangkaew | 0-6,7-5,6-2 | |
ITF Women Hua Hin | 05/08 03:00 | 25 | Mananchaya Sawangkaew v Karman Kaur Thandi | 2-6,7-6,2-6 | |
ITF Women Hua Hin | 05/03 03:00 | 26 | Harriet Dart v Mananchaya Sawangkaew | 6-3,6-3 |
Mananchaya Sawangkaew (Thai: มนัญชญา สว่างแก้ว; born 10 July 2002) is a tennis player from Thailand. She has a career-high singles ranking of world No. 133 by the WTA, achieved on 11 November 2024, and a doubles ranking of No. 546, achieved on 31 July 2023. She is currently the No. 1 Thai player. Sawangkaew has won three 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 No. 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.
She attended the Oklahoma State University in 2021–2022.
Sawangkaew made her WTA main draw debut at the 2024 Thailand Open 2 in Hua Hin, after qualifying but lost to eventual champion Rebecca Šramková. She also qualified for the next tournament, the WTA 1000 2024 China Open making her debut at this WTA level and defeated fellow qualifier Zarina Diyas in straight sets for her first WTA Tour win, but lost in the second round to top seed Aryna Sabalenka. As a result she reached a new career-high singles ranking of No. 167 on 7 October 2024 and a week later of No. 165 and became the Thai player No. 1.
She qualified for the main draw of the 2024 Guangzhou Open and defeated lucky loser Ella Seidel for a second time, having previously beaten her in the last round of qualifying. In the second round Sawangkaew overcame third seed Yuan Yue to become the first Thai player to reach a WTA Tour quarterfinal since Luksika Kumkhum in Hong Kong in 2018. She lost in the last eight to eventual champion Olga Danilović. As a result she reached the top 150 in the rankings on 28 October 2024. At the next and last 2024 Asian swing tournament, the Jiangxi Open, Sawangkaew qualified for the main draw and recorded wins over seventh seed Lucia Bronzetti, and then Zheng Saisai against whom she saved two match points, to reach back-to-back quarterfinals. Once again she went out at the last eight stage, this time losing to Laura Siegemund.