Novak Djokovic defeated Stefanos Tsitsipas in the final, 6–3, 7–6(7–4), 7–6(7–5) to win the men's singles tennis title at the 2023 Australian Open.

[1] He also became the second man to win ten titles at a single major, after Nadal at the French Open.

Carlos Alcaraz, Casper Ruud, Tsitsipas and Djokovic were in contention for the world No.

[5][6] As it was in the previous major held a few months earlier, neither of the top two seeds advanced to the quarterfinals, with Nadal and Ruud both losing in the second round; this marked the first men's singles major since the 2002 Australian Open where the top two seeds lost prior to the third round.

He is defending points from two 2022 ATP Challenger Tour tournaments (Concepción and Santa Cruz) instead.