See main article: 2023 International Challenger Zhangjiagang.
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.