| 2024 Nonthaburi Challenger II | |
|---|---|
| Date | 8 – 13 January |
| Edition | 8th |
| Surface | Hard |
| Location | Nonthaburi, Thailand |
| Champions | |
| Singles | |
 Valentin Vacherot | |
| Doubles | |
 Manuel Guinard / Grégoire Jacq | |
The 2024 Nonthaburi Challenger II was a professional tennis tournament played on hard courts. It was the 8th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 8 to 13 January 2024.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 AUT | Dennis Novak | 165 | 1 |
 TPE | Jason Jung | 244 | 2 |
| FRA | Lucas Poullain | 250 | 3 |
| Evgeny Donskoy | 251 | 4 | |
 HKG | Coleman Wong | 253 | 5 |
 USA | Tennys Sandgren | 259 | 6 |
 GER | Henri Squire | 262 | 7 |
| USA | Brandon Holt | 263 | 8 |
The following players received wildcards into the singles main draw:
Maximus Jones Kasidit Samrej Wishaya Trongcharoenchaikul The following player received entry into the singles main draw as an alternate:
Dominik PalánThe following players received entry from the qualifying draw:
Nick Hardt Christian Langmo
Hiroki Moriya Rio Noguchi 
Ramkumar Ramanathan Yusuke Takahashi Valentin Vacherot def. Manuel Guinard 7–5, 7–6(7–4). Manuel Guinard / Grégoire Jacq def. 
Francis Alcantara / 
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