See main article: 2023 Keio Challenger.
Victor Vlad Cornea and Ruben Gonzales were the defending champions[1] but only Gonzales chose to defend his title, partnering Chung Yun-seong. Gonzales lost in the semifinals to Ray Ho and Calum Puttergill.
Filip Bergevi and Mick Veldheer won the title after defeating Ho and Puttergill 2–6, 7–5, [11–9] in the final.