| Doubles | |
|---|---|
| 2023 International Challenger Zhangjiagang | |
| Champions |  Ray Ho  Matthew Romios |
| Runners-up |  Francis Alcantara  Sun Fajing |
| Score | 6–3, 6–4 |
Max Purcell and Luke Saville were the defending champions [1] but only Saville chose to defend his title, partnering Li Tu. Saville lost in the quarterfinals to Toshihide Matsui and Kaito Uesugi.
Ray Ho and Matthew Romios won the title after defeating Francis Alcantara and Sun Fajing 6–3, 6–4 in the final.
Toshihide Matsui / Kaito Uesugi (semifinals)
Rithvik Choudary Bollipalli / Arjun Kadhe (first round)
Colin Sinclair / 
Rubin Statham (first round) Ray Ho / Matthew Romios (champions)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | T Matsui K Uesugi | 77 | 6 | ||||||||||||||||||||||||
| Alt |  Ivan Denisov Leonid Sheyngezikht | 65 | 4 | 1 | T Matsui K Uesugi | 6 | 1 | [10] | |||||||||||||||||||
 F Peliwo  A Weber | 3 | 1 | L Saville L Tu | 4 | 6 | [7] | |||||||||||||||||||||
| L Saville L Tu | 6 | 6 | 1 | T Matsui K Uesugi | 4 | 7 | [5] | ||||||||||||||||||||
| 4 | R Ho MC Romios | 6 | 6 | 4 | R Ho MC Romios | 6 | 5 | [10] | |||||||||||||||||||
 N Chappell R Noguchi | 3 | 2 | 4 | R Ho MC Romios | 7 | 6 | |||||||||||||||||||||
| WC | J Cui Liu Hanyi | 6 | 3 | [4] | PR |  M Kalovelonis S Sakellaridis | 5 | 2 | |||||||||||||||||||
| PR | M Kalovelonis S Sakellaridis | 3 | 6 | [10] | 4 | R Ho MC Romios | 6 | 6 | |||||||||||||||||||
| Y Bu R Te | 6 | 6 | FC Alcantara F Sun | 3 | 4 | ||||||||||||||||||||||
| Alafia Ayeni E Zhu | 3 | 4 | Y Bu R Te | 5 | 6 | [10] | |||||||||||||||||||||
| K Uchida Y Uchiyama | 77 | 4 | [10] | K Uchida Y Uchiyama | 7 | 1 | [5] | ||||||||||||||||||||
| 3 | C Sinclair R Statham | 64 | 6 | [7] | Y Bu R Te | 67 | 3 | ||||||||||||||||||||
 L Giustino  R Strombachs | 5 | 78 | [9] | FC Alcantara F Sun | 79 | 6 | |||||||||||||||||||||
| WC | H Li Wang Xiaofei | 7 | 66 | [11] | WC | H Li X Wang | 3 | 1 | |||||||||||||||||||
| FC Alcantara F Sun | 6 | 6 | FC Alcantara F Sun | 6 | 6 | ||||||||||||||||||||||
| 2 | RC Bollipalli A Kadhe | 0 | 3 | ||||||||||||||||||||||||
Evgeny Donskoy and Alibek Kachmazov were the defending champions but lost in the first round to Toshihide Matsui and Kaito Uesugi.
Andrea Pellegrino and Mario Vilella Martínez were the defending champions but chose not to defend their title.
Yuki Bhambri and Saketh Myneni were the defending champions but chose not to defend their title.
Nam Ji-sung and Song Min-kyu were the defending champions but chose not to defend their title.
Yuki Bhambri and Saketh Myneni were the defending champions but chose not to defend their title.
Gong Maoxin and Zhang Ze were the defending champions but chose not to defend their title.
Gao Xin and Sun Fajing were the defending champions but only Sun chose to defend his title, partnering Yasutaka Uchiyama. Sun and Uchiyama withdrew from their quarterfinals match against Alex Bolt and Luke Saville.
Alexander Kudryavtsev and Denys Molchanov were the defending champions but chose not to defend their title.
Andrew Harris and John-Patrick Smith were the defending champions but chose not to defend their title.
Jay Clarke and Arjun Kadhe were the defending champions but only Kadhe chose to defend his title, partnering Hsu Yu-hsiou. Kadhe lost in the quarterfinals to Toshihide Matsui and Kaito Uesugi.
Yuki Bhambri and Mahesh Bhupathi were the defending champions from when the tournament was last held in 2016, but they didn't defend their title as Bhambri chose not to participate and Bhupathi retired from professional tennis.
Evan King and Reese Stalder were the defending champions but chose not to defend their title.
Evan King and Reese Stalder were the defending champions but chose not to defend their title.
Gao Xin and Wang Aoran were the defending champions but only Wang chose to defend his title, partnering Zhou Yi. He lost in the final to Yuta Shimizu and James Trotter.
Antoine Bellier and Luca Castelnuovo were the defending champions but chose not to defend their title.
This was the first edition of the tournament.
Sriram Balaji and Jonathan Erlich were the defending champions but chose not to defend their title.
Ray Ho and Matthew Romios were the defending champions but only Ho chose to defend his title, partnering Nam Ji-sung. They lost in the first round to Ajeet Rai and Finn Reynolds.
Alex Bolt and Luke Saville were the defending champions but chose not to defend their title.
Alexander Erler and Lucas Miedler were the defending champions but chose not to defend their title.
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