| 2024 International Challenger Zhangjiagang | |
|---|---|
| Date | 26 August – 1 September |
| Edition | 5th |
| Surface | Hard |
| Location | Zhangjiagang, China |
| Champions | |
| Singles | |
 Yasutaka Uchiyama | |
| Doubles | |
| Kaichi Uchida / Takeru Yuzuki | |
The 2024 International Challenger Zhangjiagang was a professional tennis tournament played on hard courts. It was the fifth edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Zhangjiagang, China between 26 August and 1 September 2024.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 HKG | Coleman Wong | 153 | 1 |
 KOR | Hong Seong-chan | 154 | 2 |
 TPE | Hsu Yu-hsiou | 185 | 3 |
| JPN | Yasutaka Uchiyama | 197 | 4 |
 AUS | Marc Polmans | 201 | 5 |
 KAZ | Beibit Zhukayev | 217 | 6 |
 EST | Mark Lajal | 250 | 7 |
| Egor Gerasimov | 256 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Egor Agafonov 
Norbert Gombos Lukáš Pokorný
Ajeet Rai Yusuke Takahashi 
Kris van WykThe following player received entry as a lucky loser:
Yasutaka Uchiyama def. Mark Lajal 6–7(4–7), 6–2, 6–2. Kaichi Uchida / Takeru Yuzuki def. 
Francis Alcantara / 
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