2021 Australian Open – Wheelchair men's singles
| Wheelchair men's singles | |
|---|---|
| 2021 Australian Open | |
| Champion |  Joachim Gérard |
| Runner-up |  Alfie Hewett |
| Score | 6–0, 4–6, 6–4 |
Joachim Gérard defeated Alfie Hewett in the final, 6–0, 4–6, 6–4 to win the men's singles wheelchair tennis title at the 2021 Australian Open.
Shingo Kunieda was the defending champion, but was defeated by Hewett in the semifinals.
Seeds
Shingo Kunieda (semifinals)
Gustavo Fernández (quarterfinals)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
Bracket
| Quarterfinals | Semifinals | Final | ||||||||||||||||||
| 1 |  Shingo Kunieda | 6 | 6 | |||||||||||||||||
| WC |  Ben Weekes | 0 | 1 | |||||||||||||||||
| 1 | Shingo Kunieda | 3 | 4 | |||||||||||||||||
| Alfie Hewett | 6 | 6 | ||||||||||||||||||
| Alfie Hewett | 7 | 6 | ||||||||||||||||||
 Nicolas Peifer | 5 | 3 | ||||||||||||||||||
| Alfie Hewett | 0 | 6 | 4 | |||||||||||||||||
| Joachim Gérard | 6 | 4 | 6 | |||||||||||||||||
| Stéphane Houdet | 3 | 68 | ||||||||||||||||||
| Joachim Gérard | 6 | 710 | ||||||||||||||||||
| Joachim Gérard | 4 | 7 | 6 | |||||||||||||||||
| Gordon Reid | 6 | 5 | 3 | |||||||||||||||||
| Gordon Reid | 5 | 6 | 6 | |||||||||||||||||
| 2 |  Gustavo Fernández | 7 | 4 | 4 | ||||||||||||||||
