See main article: 2023 Australian Open.
| Champ: |  Novak Djokovic |
| Runner: | Stefanos Tsitsipas |
| Score: | 6–3, 7–6(7–4), 7–6(7–5) |
| Draw: | 128 |
| Seeds: | 32 |
| Type: | grandslamwc |
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. It was his record-extending 10th Australian Open title and 22nd major title overall, tying Rafael Nadal for the all-time record of most Grand Slam men's singles titles won.[1] He also became the second man to win double-digit titles at a single major, after Nadal at the French Open.[2] Djokovic lost just one set en route to the title (in the second round to Enzo Couacaud), and extended his match winning-streak at the Australian Open to an Open Era record 28 matches.
Nadal was the defending champion,[3] but lost in the second round to Mackenzie McDonald.[4]
Carlos Alcaraz, Casper Ruud, Tsitsipas and Djokovic were in contention for the world No. 1 singles ranking at the beginning of the tournament. By winning the tournament, Djokovic claimed the top spot. Alcaraz, the incumbent world No. 1, withdrew from the tournament due to a right leg injury.[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.[7] [8] Tsitsipas became the youngest finalist since Djokovic in 2011.[9] Tommy Paul became the first American man to reach the semifinals since Andy Roddick in 2009.[10]
With his win over Thanasi Kokkinakis in the longest match of his career, Andy Murray won a match from two sets down for a record eleventh time.[11]
The following are the seeded players. Seedings are based on ATP rankings as of 9 January 2023. Rankings and points before are as of 16 January 2023.
| Seed | Rank | Player | Points before | Points defending | Points won | Points after | Status | |
|---|---|---|---|---|---|---|---|---|
| 1 | 2 |  Rafael Nadal | 5,770 | 2,000 | 45 | 3,815 | Second round lost to  Mackenzie McDonald | |
| 2 | 3 |  Casper Ruud | 5,720 | 0 | 45 | 5,765 | Second round lost to Jenson Brooksby | |
| 3 | 4 | Stefanos Tsitsipas | 5,715 | 720 | 1,200 | 6,195 | Runner-up, lost to Novak Djokovic [4] | |
| 4 | 5 | Novak Djokovic | 5,070 | 0 | 2,000 | 7,070 | Champion, defeated Stefanos Tsitsipas [3] | |
| 5 | 6 | Andrey Rublev | 3,930 | 90 | 360 | 4,200 | Quarterfinals lost to Novak Djokovic [4] | |
| 6 | 7 |  Félix Auger-Aliassime | 3,895 | 360 | 180 | 3,715 | Fourth round lost to  Jiří Lehečka | |
| 7 | 8 | Daniil Medvedev | 3,860 | 1,200 | 90 | 2,745 | Third round lost to Sebastian Korda [29] | |
| 8 | 9 | Taylor Fritz | 3,545 | 180 | 45 | 3,410 | Second round lost to  Alexei Popyrin (WC) | |
| 9 | 10 | Holger Rune | 2,876 | 10 | 180 | 3,046 | Fourth round lost to Andrey Rublev [5] | |
| 10 | 11 |  Hubert Hurkacz | 2,860 | 45 | 180 | 2,995 | Fourth round lost to Sebastian Korda [29] | |
| 11 | 12 |  Cameron Norrie | 2,680 | 10 | 90 | 2,760 | Third round lost to Jiří Lehečka | |
| 12 | 13 | Alexander Zverev | 2,560 | 180 | 45 | 2,425 | Second round lost to Michael Mmoh (LL) | |
| 13 | 14 |  Matteo Berrettini | 2,490 | 720 | 10 | 1,780 | First round lost to Andy Murray | |
| 14 | 15 | Pablo Carreño Busta | 2,420 | 180 | 45 | 2,285 | Second round lost to  Benjamin Bonzi | |
| 15 | 16 | Jannik Sinner | 2,375 | 360 | 180 | 2,195 | Fourth round lost to Stefanos Tsitsipas [3] | |
| 16 | 17 | Frances Tiafoe | 2,260 | 45 | 90 | 2,305 | Third round lost to Karen Khachanov [18] | |
| 17 | 19 | Lorenzo Musetti | 1,925 | 10 | 10 | 1,925 | First round lost to Lloyd Harris (PR) | |
| 18 | 20 | Karen Khachanov | 1,885 | 90 | 720 | 2,515 | Semifinals lost to Stefanos Tsitsipas [3] | |
| | 1,870 | 45 | 0 | 1,825 | Withdrew due to knee injury | |||
| 20 | 22 | Denis Shapovalov | 1,830 | 360 | 90 | 1,560 | Third round lost to Hubert Hurkacz [10] | |
| 21 | 23 | Borna Ćorić | 1,760 | 0 | 10 | 1,770 | First round lost to Jiří Lehečka | |
| 22 | 24 | Alex de Minaur | 1,710 | 180 | 180 | 1,710 | Fourth round lost to Novak Djokovic [4] | |
| 23 | 26 |  Diego Schwartzman | 1,550 | 45 | 45 | 1,550 | Second round lost to J. J. Wolf | |
| 24 | 25 | Roberto Bautista Agut | 1,675 | 90 | 180 | 1,765 | Fourth round lost to Tommy Paul | |
| 25 | 30 | Dan Evans | 1,380 | 90 | 90 | 1,380 | Third round lost to Andrey Rublev [5] | |
| 26 | 27 | Miomir Kecmanović | 1,445 | 180 | 10 | 1,275 | First round lost to Nicolás Jarry (Q) | |
| 27 | 28 | Grigor Dimitrov | 1,395 | 45 | 90 | 1,440 | Third round lost to Novak Djokovic [4] | |
| 28 | 29 | Francisco Cerúndolo | 1,383 | 16+80† | 90+0 | 1,377 | ||
| 29 | 31 | Sebastian Korda | 1,325 | 90 | 360 | 1,595 | Quarterfinals lost to Karen Khachanov [18] | |
| 30 | 32 | 1,325 | 45 | 45 | 1,325 | Second round lost to Tommy Paul | ||
| 31 | 33 |  Yoshihito Nishioka | 1,212 | 10+80 | 180+0 | 1,302 | Fourth round lost to Karen Khachanov [18] | |
| 32 | 34 | Botic van de Zandschulp | 1,205 | 90 | 45 | 1,160 | Second round lost to Tallon Griekspoor |
The following players would have been seeded, but withdrew before the tournament began.
| Rank | Player | Points before | Points defending | Points after | Withdrawal reason | |
|---|---|---|---|---|---|---|
| 1 | Carlos Alcaraz | 6,820 | 90 | 6,730 | Right leg injury | |
| 18 | Marin Čilić | 1,970 | 180 | 1,790 | Right knee injury |
Source:[12]
Source:[13]
See main article: 2023 Australian Open – Men's singles qualifying.
Source:[14]
The entry list was released by Tennis Australia based on the ATP rankings for the week of 5 December 2022.[15]