Dennis Novak (German pronunciation: [ˈdɛnɪs ˈnoːvak]; born 28 August 1993, in Wiener Neustadt) is an Austrian professional tennis player.

[3] Novak made his ATP main draw debut at the 2013 Bet-at-home Cup Kitzbühel where he defeated Matthias Haim, Lorenzo Giustino and Tihomir Grozdanov in the qualifying rounds.

In the main draw, Novak lost to compatriot Andreas Haider-Maurer.

[2] He reached the second round at the 2022 Wimbledon Championships for a second time with a win over Facundo Bagnis.

[4] He qualified for the 2023 Wimbledon Championships for a third consecutive year but lost to Milos Raonic.