The 2023 season on the ATP Tour kicks off at the end of December 2022 with the United Cup, which will be held, in Australia. You can see the list of tournaments on this page.
| Date | Category | Tournament | Surface | Winner |
| Dec 29 – Jan 8 | ATP 500 | United Cup | Hard | Team USA |
| Jan 1 – Jan 8 | ATP 250 | Adelaide International 1 | Hard | Novak Djokovic |
| Jan 2 – Jan 7 | ATP 250 | Tata Open Maharashtra | Hard | Tallon Griekspoor |
| Jan 9 – Jan 14 | ATP 250 | ASB Classic | Hard | Richard Gasquet |
| Jan 9 – Jan 14 | ATP 250 | Adelaide International 2 | Hard | Kwon Soon Woo |
| Jan 16 – Jan 29 | Grand Slam | Australian Open | Hard | Novak Djokovic |
| Date | Category | Tournament | Surface | Winner |
| Feb 6 – Feb 12 | ATP 250 | Dallas Open | Hard | Yibing Wu |
| Feb 6 – Feb 12 | ATP 250 | Cordoba Open | Hard | Sebastian Baez |
| Feb 6 – Feb 12 | ATP 250 | Open Sud de France | Hard | Jannik Sinner |
| Feb 13 – Feb 19 | ATP 500 | ABN AMRO Open | Hard | Daniil Medvedev |
| Feb 13 – Feb 19 | ATP 250 | Delray Beach Open | Hard | Taylor Fritz |
| Feb 13 – Feb 19 | ATP 250 | Argentina Open | Clay | Carlos Alcaraz |
| Feb 20 – Feb 26 | ATP 250 | Rio Open | Clay | Cameron Norrie |
| Feb 20 – Feb 26 | ATP 250 | Qatar ExxonMobil Open | Hard | Daniil Medvedev |
| Feb 20 – Feb 26 | ATP 250 | Open 13 Provence | Hard | Hubert Hurkacz |
| Feb 27 – Mar 05 | ATP 500 | Dubai Duty-Free Tennis Championship | Hard | Daniil Medvedev |
| Feb 27 – Mar 05 | ATP 500 | Abierto Mexicano | Hard | Alex De Minaur |
| Feb 27 – Mar 05 | ATP 250 | Chile Open | Hard | Nicolas Jarry |
| Date | Category | Tournament | Surface | Winner |
| Aug 1 – Aug 7 | ATP 500 | Citi Open | Hard | |
| Aug 2 – Aug 6 | ATP 250 | Abierto de Tenis Mifel | Hard | |
| Aug 8 – Aug 14 | ATP 1000 | National Bank Open Presented by Rogers | Hard | |
| Aug 14 – Aug 21 | ATP 1000 | Western & Southern Open | Hard | |
| Aug 21 – Aug 27 | ATP 250 | Winston-Salem Open | Hard | |
| Aug 29 – Sep 11 | Grand Slam | US Open | Hard |
