| Singles | |
|---|---|
| 2023 Busan Open | |
| Champion |  Aleksandar Vukic |
| Runner-up | Max Purcell |
| Score | 6–4, 1–0 ret. |
Kamil Majchrzak was the defending champion [1] but chose not to defend his title.
Aleksandar Vukic won the title after Max Purcell retired trailing 4–6, 0–1 in the final.
Max Purcell (final, retired)
Christopher Eubanks (quarterfinals) Jordan Thompson (quarterfinals)
Emilio Gómez (first round) Rinky Hijikata (second round) Aleksandar Vukic (champion)
Kaichi Uchida (first round)
Gabriel Diallo (semifinals)| Semifinals | Final | ||||||||||||
| 1 | Max Purcell | 6 | 7 | ||||||||||
| 8 | Gabriel Diallo | 4 | 5 | ||||||||||
| 1 | Max Purcell | 4 | 0r | ||||||||||
| 6 | Aleksandar Vukic | 6 | 1 | ||||||||||
| Brandon Holt | 64 | 1 | |||||||||||
| 6 | Aleksandar Vukic | 77 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Purcell | 6 | 6 | ||||||||||||||||||||||||
| Q | Yuki Mochizuki | 3 | 3 | 1 | M Purcell | 6 | 6 | ||||||||||||||||||||
| Q | Renta Tokuda | 64 | 3 |  Y-h Hsu | 2 | 4 | |||||||||||||||||||||
| Y-h Hsu | 77 | 6 | 1 | M Purcell | 6 | 7 | |||||||||||||||||||||
| WC |  H Chung | 3 | 77 | 2 | Q | Y Uchiyama | 4 | 5 | |||||||||||||||||||
| Q | Y Uchiyama | 6 | 63 | 6 | Q | Y Uchiyama | 6 | 3 | 6 | ||||||||||||||||||
| Alt | O Jasika | 78 | 3 | 2 | 5 | R Hijikata | 4 | 6 | 4 | ||||||||||||||||||
| 5 | R Hijikata | 66 | 6 | 6 | 1 | M Purcell | 6 | 7 | |||||||||||||||||||
| 3 | J Thompson | 6 | 6 | 8 | G Diallo | 4 | 5 | ||||||||||||||||||||
| Alt |  D Masur | 1 | 1 | 3 | J Thompson | 7 | 6 | ||||||||||||||||||||
 E Donskoy | 7 | 3 | 6 | E Donskoy | 5 | 3 | |||||||||||||||||||||
| Y Shimizu | 5 | 6 | 0 | 3 | J Thompson | 3 | 5 | ||||||||||||||||||||
| WC | Y-s Chung | 7 | 6 | 8 | G Diallo | 6 | 7 | ||||||||||||||||||||
| T-l Wu | 5 | 2 | WC | Y-s Chung | 65 | 64 | |||||||||||||||||||||
| WC | J-s Nam | 3 | 3 | 8 | G Diallo | 77 | 77 | ||||||||||||||||||||
| 8 | G Diallo | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | K Uchida | 2 | 4 | ||||||||||||||||||||||||
 A Çelikbilek | 6 | 6 | A Çelikbilek | 4 | 65 | ||||||||||||||||||||||
 Y Bu | 4 | 4 | L Tu | 6 | 77 | ||||||||||||||||||||||
| L Tu | 6 | 6 | L Tu | 4 | 4 | ||||||||||||||||||||||
 R Berankis | 63 | 3 | B Holt | 6 | 6 | ||||||||||||||||||||||
| Q | L Saville | 77 | 6 | Q | L Saville | 3 | 3 | ||||||||||||||||||||
| B Holt | 6 | 6 | B Holt | 6 | 6 | ||||||||||||||||||||||
| 4 | E Gómez | 2 | 2 | B Holt | 64 | 1 | |||||||||||||||||||||
| 6 | A Vukic | 77 | 6 | 6 | A Vukic | 77 | 6 | ||||||||||||||||||||
 L Harris | 65 | 3 | 6 | A Vukic | 77 | 6 | |||||||||||||||||||||
| S Shimabukuro | 62 | 6 | 7 | S Shimabukuro | 61 | 4 | |||||||||||||||||||||
| Q | H Moriya | 77 | 2 | 5 | 6 | A Vukic | 64 | 77 | 6 | ||||||||||||||||||
| Q | J Jung | 6 | 3 | 2 | C Eubanks | 77 | 63 | 4 | |||||||||||||||||||
| S-c Hong | 2 | 0r | Q | J Jung | 4 | 3 | |||||||||||||||||||||
| M Polmans | 6 | 3 | 66 | 2 | C Eubanks | 6 | 6 | ||||||||||||||||||||
| 2 | C Eubanks | 4 | 6 | 78 | |||||||||||||||||||||||
Sebastian Ofner was the defending champion but lost in the third round to Aleksandar Vukic.
Blaž Kavčič was the defending champion but chose not to defend his title.
Jordan Thompson was the defending champion but chose not to defend his title.
Rogério Dutra Silva was the defending champion but chose not to defend his title.
Two-time defending champion Barbora Krejčíková and her partner Rajeev Ram defeated Samantha Stosur and Matthew Ebden in the final, 6–1, 6–4 to win the mixed doubles tennis title at the 2021 Australian Open. It was the pair's second major mixed doubles title as a team, after their first at the 2019 Australian Open. They saved a match point en route to the title, in the second round against Ena Shibahara and Ben McLachlan.
Andrea Vavassori and David Vega Hernández were the defending champions but only Vega Hernández chose to defend his title, partnering Fernando Romboli. Vega Hernández lost in the semifinals to Zdeněk Kolář and Jiří Lehečka.
J. J. Wolf was the defending champion but lost in the semifinals to Stefan Kozlov.
James Duckworth was the defending champion but chose not to defend his title.
Tseng Chun-hsin was the defending champion but lost in the first round to Markos Kalovelonis.
Benjamin Bonzi was the defending champion but chose not to defend his title.
Mitchell Krueger was the defending champion but lost in the first round to Keegan Smith.
Yoshihito Nishioka was the defending champion but chose not to defend his title.
Max Purcell and Luke Saville were the defending champions but only Purcell chose to defend his title, partnering Marc Polmans. Purcell withdrew before his semifinal match against Chung Yun-seong and Aleksandar Kovacevic due to injury.
James Duckworth was the defending champion but lost in the quarterfinals to Rinky Hijikata.
Arthur Rinderknech was the defending champion but chose not to defend his title.
Stefan Kozlov was the defending champion but lost in the first round to Prajnesh Gunneswaran.
Tseng Chun-hsin was the defending champion but chose not to defend his title.
Aleksandar Vukic was the defending champion but chose not to defend his title.
Li Tu was the defending champion but lost in the first round to Emilio Gómez.
Zsombor Piros was the defending champion but chose not to defend his title.