# 2025 ITF Nonthaburi 2 – Singles

Mananchaya Sawangkaew was the defending champion but chose to compete at the Australian Open qualifying instead.
Yao Xinxin won the title, defeating Zheng Wushuang in the final; 6–4, 6–0.

## Seeds

* Ma Yexin (first round)
* Maria Mateas (quarterfinals)
* Petra Marčinko (quarterfinals)
* Jang Su-jeong (first round, retired)
* Yao Xinxin (champion)
* Lu Jiajing (first round)
* Mei Yamaguchi (second round)
* Kristina Dmitruk (semifinals, retired)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| Q | Zheng Wushuang | 6 | 2 | | | | |
| 8/SR | Kristina Dmitruk | 3 | 0$^r$ | | | | |
| 8/SR | Kristina Dmitruk | 3 | 0$^r$ | Q | Zheng Wushuang | 4 | 0 |
| | | | | 5 | Yao Xinxin | 6 | 6 |
| 5 | Yao Xinxin | 7$^7$ | 6 | 5 | Yao Xinxin | 6 | 6 |
| | Mariia Tkacheva | 6$^5$ | 3 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Y Ma | 6 | 2 | 5 | | | | | | | | | | | | | | |
| | T Andrianjafitrimo | 3 | 6 | 7 | | T Andrianjafitrimo | 6$^4$ | 6 | 7$^9$ | | | | | | | | | |
| WC | A Chanta | 6 | 4 | 3 | | C Rosatello | 7$^7$ | 1 | 6$^7$ | | | | | | | | | |
| | C Rosatello | 1 | 6 | 6 | | | | | | | T Andrianjafitrimo | 1 | 6 | 6$^5$ | | | | |
| | A Shimizu | 6 | 6 | | | | | | | Q | W Zheng | 6 | 4 | 7$^7$ | | | | |
| Q | H Kuwata | 1 | 0 | | | A Shimizu | 4 | 2 | | | | | | | | | | |
| Q | W Zheng | 1 | 6 | 6 | Q | W Zheng | 6 | 6 | | | | | | | | | | |
| 6 | J Lu | 6 | 3 | 3 | | | | | | | | | | | Q | W Zheng | 6 | 2 |
| 3 | P Marčinko | 6 | 6 | | | | | | | | | | | | 8/SR | K Dmitruk | 3 | 0$^r$ |
| | Y Mansouri | 3 | 3 | | 3 | P Marčinko | 6 | 6 | | | | | | | | | | |
| WC | P Kovapitukted | 3 | 5 | | | S Yamalapalli | 4 | 3 | | | | | | | | | | |
| | S Yamalapalli | 6 | 7 | | | | | | | 3 | P Marčinko | 4 | 1 | | | | | |
| Q | M Xu | 6 | 6 | | | | | | | 8/SR | K Dmitruk | 6 | 6 | | | | | |
| | N Stevanović | 1 | 3 | | Q | M Xu | | | | | | | | | | | | |
| Q | D Hewitt | 3 | 1 | | 8/SR | K Dmitruk | w/o | | | | | | | | | | | |
| 8/SR | K Dmitruk | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | X Yao | 7$^7$ | 6 | | | | | | | | | | | | | | | |
| | X You | 6$^2$ | 3 | | 5 | X Yao | 6 | 6 | | | | | | | | | | |
| Q | A Koshiishi | 6 | 4 | 6 | Q | A Koshiishi | 0 | 1 | | | | | | | | | | |
| Q | E Chong | 2 | 6 | 4 | | | | | | 5 | X Yao | 6 | 4 | 6 | | | | |
| | A Rogers | 4 | 4 | | | | | | | Q | C Wong | 4 | 6 | 2 | | | | |
| Q | Z Diyas | 6 | 6 | | Q | Z Diyas | 1 | 6 | 3 | | | | | | | | | |
| Q | C Wong | 6 | 3 | 5 | Q | C Wong | 6 | 1 | 6 | | | | | | | | | |
| 4 | S-j Jang | 2 | 6 | 2$^r$ | | | | | | | | | | | 5 | X Yao | 7$^7$ | 6 |
| 7 | M Yamaguchi | 6 | 6 | | | | | | | | | | | | | M Tkacheva | 6$^5$ | 3 |
| WC | T Naklo | 0 | 2 | | 7 | M Yamaguchi | 6$^2$ | 5 | | | | | | | | | | |
| | N Sato | 3 | 3 | | | M Tkacheva | 7$^7$ | 7 | | | | | | | | | | |
| | M Tkacheva | 6 | 6 | | | | | | | | M Tkacheva | 7 | 6 | | | | | |
| | S Sakellaridi | 7 | 2 | 3 | | | | | | 2 | M Mateas | 5 | 1 | | | | | |
| WC | P Cheapchandej | 5 | 6 | 6 | | P Cheapchandej | 6$^5$ | 0 | | | | | | | | | | |
| | A Tikhonova | 6$^5$ | 4 | | 2 | M Mateas | 7$^7$ | 6 | | | | | | | | | | |
| 2 | M Mateas | 7$^7$ | 6 | | | | | | | | | | | | | | | |