2023-09-11 Rennes (c)

The 2023 Open de Rennes (known as Open Blot Rennes for sponsorship reasons) was a men's tennis tournament played on indoor hard courts in Rennes, France, that was part of the Challenger 100 series of tournaments on the 2023 ATP Challenger Tour. It was the 17th edition of the Open de Rennes and was held 11–17 September.