2023-09-04 Tulln (c)

The 2023 NÖ Open (known as NÖ Open powered by EVN for sponsorship reasons) was a men's tennis tournament played on outdoor clay courts in Tulln, Austria, that was part of the Challenger 100 series of tournaments on the 2023 ATP Challenger Tour. It was the 3rd edition of the NÖ Open and was held 4–10 September.