2023-10-23 Curitiba (c)

The 2023 Curitiba Challenger (known as Festval Challenger for sponsorship reasons) was a men's tennis tournament played on outdoor clay courts in Curitiba, Brazil, that was part of the Challenger 75 series of tournaments on the 2023 ATP Challenger Tour. It was the 2nd edition of the Curitiba Challenger and was held 23–29 October.