2023-11-06 Matsuyama (c)

The 2023 Matsuyama Challenger (known as Unicharm Trophy Ehime International Open Tennis for sponsorship reasons) was a men's tennis tournament played on outdoor hard courts in Matsuyama, Japan, that was part of the Challenger 75 series of tournaments on the 2023 ATP Challenger Tour. It was the 2nd edition of the Matsuyama Challenger and was held 6–12 November.