The 2023 Nonthaburi Challenger was a professional tennis tournament played on hard courts. It was the 4th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 2 to 7 January 2023.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 HUN
|
Fábián Marozsán | 173 | 1 |
 AUT
|
Dennis Novak | 180 | 2 |
 TPE
|
Wu Tung-lin | 184 | 3 |
 FRA
|
Antoine Escoffier | 205 | 4 |
 ITA
|
Gianluca Mager | 212 | 5 |
 GBR
|
Paul Jubb | 219 | 6 |
 AUS
|
Max Purcell | 220 | 7 |
| TPE
|
Hsu Yu-hsiou | 221 | 8 |
- 1 Rankings are as of 26 December 2022.[1]
Other entrants
The following players received wildcards into the singles main draw:
Maximus Jones- Palaphoom Kovapitukted
- Thantub Suksumrarn
The following players received entry from the qualifying draw:
Alafia Ayeni
Evgeny Donskoy- Giovanni Fonio
- Dayne Kelly
- Lucas Pouille
Henri Squire
Champions
Singles
- Dennis Novak def. Wu Tung-lin 6–4, 6–4.
Doubles
Marek Gengel / Adam Pavlásek def. Robert Galloway / 
Hans Hach Verdugo 7–6(7–4), 6–4.
References
- ^ "Rankings | Singles | ATP Tour | Tennis". ATP Tour.
