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 |
| March 8 – March 19 | ATP 1000 | BNP Paribas Open | Hard | Carlos Alcaraz |
| March 22 – April 2 | ATP 1000 | Miami Open presented by Itau | Hard |
| Date | Category | Tournament | Surface | Winner |
| Apr 3 – Apr 9 | ATP 250 | Fayez Sarofim & Co. U.S. Men’s Clay Court Championship | Clay | Frances Tiafoe |
| Apr 3 – Apr 9 | ATP 250 | Grand Prix Hassan II | Clay | Roberto Carballes Baena |
| Apr 3 – Apr 9 | ATP 250 | Millennium Estoril Open | Clay | Casper Ruud |
| Apr 9 – Apr 16 | ATP 1000 | Rolex Monte-Carlo Masters | Clay | Andrey Rublev |
| Apr 17 – Apr 23 | ATP 500 | Barcelona Open Banc Sabadell | Clay | Carlos Alcaraz |
| Apr 17 – Apr 23 | ATP 250 | BMW Open by American Express | Clay | Holger Rune |
| Apr 17 – Apr 23 | ATP 250 | Srpska Open | Clay | Dusan Lajovic |
| Apr 26 – May 7 | ATP 1000 | Mutua Madrid Open | Clay | Carlos Alcaraz |
| Date | Category | Tournament | Surface | Winner |
| Apr 26 – May 7 | ATP 1000 | Mutua Madrid Open | Clay | Carlos Alcaraz |
| May 10 – May 21 | ATP 1000 | Internazionali BNL d’Italia | Clay | Daniil Medvedev |
| May 21 – May 27 | ATP 250 | Gonet Geneva Open | Clay | Nicolas Jarry |
| May 21 – May 27 | ATP 250 | Open Parc Auvergne-Rhone-Alpes Lyon | Clay | Arthur Fils |
| May 28 – June 11 | Grand Slam | Roland Garros | Clay | Novak Djokovic |
| Date | Category | Tournament | Surface | Winner |
| May 28 – June 11 | Grand Slam | Roland Garros | Clay | Novak Djokovic |
| June 12 – June 18 | ATP 250 | BOSS OPEN | Grass | Frances Tiafoe |
| June 12 – June 18 | ATP 250 | Libema Open | Grass | Tallon Griekspoor |
| June 19 – June 25 | ATP 500 | Cinch Championships | Grass | Carlos Alcaraz |
| June 19 – June 25 | ATP 500 | Terra Wortmann Open | Grass | Alexander Bublik |
| June 26 – July 1 | ATP 250 | Mallorca Championships | Grass | Christopher Eubanks |
| June 26 – July 1 | ATP 250 | Rothesay International | Grass | Francisco Cerundolo |
| Date | Category | Tournament | Surface | Winner |
| July 3 – July 16 | Grand Slam | Wimbledon | Grass | |
| July 17 – July 23 | ATP 250 | Infosys Hall of Fame Open | Grass | |
| July 17 – July 23 | ATP 250 | EFG Swiss Open Gstaad | Clay | |
| July 17 – July 23 | ATP 250 | Nordea Open | Clay | |
| July 24 – July 30 | ATP 500 | Hamburg European Open | Clay | |
| July 24 – July 30 | ATP 250 | Atlanta Open | Hard | |
| July 24 – July 30 | ATP 250 | Plava Laguna Croatia Open Umag | Clay | |
| July 31– Aug 6 | ATP 500 | Mubadala Citi DC Open | Hard |
| 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 |
