| 2024 Nonthaburi Challenger III | |
|---|---|
| Date | 15 – 21 January |
| Edition | 9th |
| Surface | Hard |
| Location | Nonthaburi, Thailand |
| Champions | |
| Doubles | |
 Luke Johnson /  Skander Mansouri | |
The 2024 Nonthaburi Challenger III was a professional tennis tournament played on hard courts. It was the 9th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 15 to 21 January 2024.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 CRO | Duje Ajduković | 143 | 1 |
 GER | Benjamin Hassan | 150 | 2 |
 JPN | Sho Shimabukuro | 152 | 3 |
 NED | Gijs Brouwer | 154 | 4 |
 CZE | |||
 UKR | Vitaliy Sachko | 169 | 6 |
 ITA | Matteo Gigante | 172 | 7 |
| ITA | Mattia Bellucci | 180 | 8 |
The following players received wildcards into the singles main draw:
Thanapet Chanta Maximus Jones Kasidit Samrej The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Luke Johnson / Skander Mansouri def. 
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