2023 Australian Open, Men's Singles

The 2023 Australian Open was a Grand Slam tennis tournament played on outdoor hard courts in Melbourne, Australia, that was part of the 2023 ATP Tour, 2023 WTA Tour, 2023 ITF World Tennis Tour Juniors and 2023 ITF Wheelchair Tennis Tour. It was the 111th edition of the Australian Open and was held 16 to 29 January.

On 1 March 2022, the ATP, WTA, ITF and the four grand slam tournaments announced as a result of the Russian war in Ukraine, Belarus and Russia would not be allowed to play in tournaments under the names or flags of their countries. The tennis players are able to compete in tournaments but not under the Russian or Belarusian flags.