# 2024 Nonthaburi Challenger – Singles

Sho Shimabukuro was the defending champion but chose not to defend his title.
Valentin Vacherot won the title after Lucas Pouille retired trailing 2–3 in the final.

## Seeds

* Dennis Novak (first round)
* Zdeněk Kolář (second round)
* Mattia Bellucci (first round, retired)
* Ivan Gakhov (second round)
* Kimmer Coppejans (second round)
* Beibit Zhukayev (withdrew)
* Stefano Travaglia (first round)
* Marco Cecchinato (first round)

## 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 |
| Q | Lucas Pouille | 6 | 6 | | | |
| Q | Hong Seong-chan | 3 | 3 | | | |
| Q | Hong Seong-chan | 3 | 3 | Q | Lucas Pouille | 2$^r$ |
| | | | | Q | Valentin Vacherot | 3 |
| Q | Valentin Vacherot | 6 | 7$^7$ | Q | Valentin Vacherot | 3 |
| | Hsu Yu-hsiou | 3 | 6$^2$ | | | |

### 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 | D Novak | 7 | 4 | 4 | | | | | | | | | | | | | | |
| | E Donskoy | 5 | 6 | 6 | | E Donskoy | 3 | 3 | | | | | | | | | | |
| | G Onclin | 7 | 6 | | | G Onclin | 6 | 6 | | | | | | | | | | |
| | Y Uchiyama | 5 | 2 | | | | | | | | G Onclin | 3 | 2 | | | | | |
| Q | L Pouille | 6 | 6 | | | | | | | Q | L Pouille | 6 | 6 | | | | | |
| | G Oliveira | 3 | 3 | | Q | L Pouille | 6 | 6 | | | | | | | | | | |
| WC | Maximus Jones | 7 | 6 | | WC | M Jones | 4 | 0 | | | | | | | | | | |
| 8 | M Cecchinato | 5 | 4 | | | | | | | | | | | | Q | L Pouille | 6 | 6 |
| 3 | M Bellucci | 6 | 4 | 1$^r$ | | | | | | | | | | | Q | S-c Hong | 3 | 3 |
| | M Lajal | 4 | 6 | 4 | | M Lajal | 6 | 4 | 5 | | | | | | | | | |
| Q | S-c Hong | 6 | 2 | 6 | Q | S-c Hong | 2 | 6 | 7 | | | | | | | | | |
| | P-H Herbert | 4 | 6 | 3 | | | | | | Q | S-c Hong | 3 | 6 | 6 | | | | |
| | T Sandgren | 5 | 4 | | | | | | | Q | M Sharipov | 6 | 3 | 2 | | | | |
| Q | Marat Sharipov | 7 | 6 | | Q | M Sharipov | 6 | 6 | | | | | | | | | | |
| | Lucas Poullain | 6 | 1 | 2 | 5 | K Coppejans | 3 | 4 | | | | | | | | | | |
| 5 | K Coppejans | 3 | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | S Travaglia | 3 | 6 | 1 | | | | | | | | | | | | | |
| | L Lokoli | 6 | 3 | 6 | | L Lokoli | 4 | 4 | | | | | | | | | |
| Q | R Noguchi | 6$^1$ | 6$^6$ | | Q | V Vacherot | 6 | 6 | | | | | | | | | |
| Q | V Vacherot | 7$^7$ | 7$^8$ | | | | | | Q | V Vacherot | 4 | 7 | 7$^7$ | | | | |
| WC | W Trongcharoenchaikul | 3 | 2 | | | | | | | F Passaro | 6 | 5 | 6$^1$ | | | | |
| | F Passaro | 6 | 6 | | | F Passaro | 7$^{12}$ | 6 | | | | | | | | | |
| Q | A Weber | 4 | 2 | | 4 | I Gakhov | 6$^{10}$ | 2 | | | | | | | | | |
| 4 | I Gakhov | 6 | 6 | | | | | | | | | | | Q | V Vacherot | 6 | 7$^7$ |
| LL | C-h Tseng | 6 | 6 | | | | | | | | | | | | Y-h Hsu | 3 | 6$^2$ |
| | Y Shimizu | 3 | 3 | | LL | C-h Tseng | 3 | 0$^r$ | | | | | | | | | |
| | Y-h Hsu | 6 | 3 | 6 | | Y-h Hsu | 6 | 1 | | | | | | | | | |
| | M Valkusz | 3 | 6 | 1 | | | | | | Y-h Hsu | 6 | 6 | | | | | |
| | C Tabur | 4 | 3 | | | | | | | B Holt | 1 | 4 | | | | | |
| | B Holt | 6 | 6 | | | B Holt | 7$^7$ | 6 | | | | | | | | | |
| WC | K Samrej | 7 | 4 | 3 | 2 | Z Kolář | 6$^4$ | 2 | | | | | | | | | |
| 2 | Z Kolář | 5 | 6 | 6 | | | | | | | | | | | | | |