1931 Australian Championships – Men's singles
# 1931 Australian Championships – Men's singles

Jack Crawford defeated Harry Hopman 6–4, 6–2, 2–6, 6–1 in the final to win the men's singles tennis title at the 1931 Australian Championships.

## Seeds

The seeded players are listed below. Jack Crawford is the champion; others show the round in which they were eliminated.

* Jack Crawford (champion)
* Harry Hopman (finalist)
* Gar Moon (quarterfinals)
* Jack Cummings (semifinals)
* Clifford Sproule (quarterfinals)
* Ray Dunlop (first round)
* Harry Hassett (quarterfinals)
* Don Turnbull (semifinals)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* r = Retired

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Finals | Finals | Finals | Finals | Finals | Finals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | Jack Crawford | 6 | 3 | 6 | 6 | | | | | | | | | | | | |
| 5 | Clifford Sproule | 0 | 6 | 0 | 3 | | 1 | Jack Crawford | 6 | 6 | 12 | | | | | | |
| 3 | Gar Moon | 7 | 6 | 3 | 6 | 2 | 8 | Don Turnbull | 2 | 2 | 10 | | | | | | |
| 8 | Don Turnbull | 9 | 2 | 6 | 4 | 6 | | | | | | 1 | Jack Crawford | 6 | 6 | 2 | 6 |
| 2 | Harry Hopman | 5 | 6 | 6 | 6 | | | | | | | 2 | Harry Hopman | 4 | 2 | 6 | 1 |
| | Aubrey Willard | 7 | 3 | 4 | 4 | | 2 | Harry Hopman | 8 | 6 | 6 | | | | | | |
| 4 | Jack Cummings | 6 | 6 | 6 | | | 4 | Jack Cummings | 6 | 2 | 4 | | | | | | |
| 7 | Harry Hassett | 2 | 2 | 4 | | | | | | | | | | | | | |

### Earlier rounds

**Section 1**

| First round | First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | Crawford | 7 | 8 | 6 | | | | | | | | | | | | | | | | | | | | |
| | Teague | 5 | 6 | 3 | | | 1 | Crawford | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Walker | w/o | | | | | | Walker | 0 | 1 | 2 | | | | | | | | | | | | | |
| | McMichael | | | | | | | | | | | | 1 | Crawford | 6 | 3 | 6 | 6 | | | | | | |
| 5 | Sproule | 6 | 6 | 6 | | | | | | | | | 5 | Sproule | 0 | 6 | 0 | 3 | | | | | | |
| | Tonkin | 2 | 3 | 0 | | | 5 | Sproule | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Peach | 4 | 6 | 6 | 6 | 6 | | Peach | 0 | 2 | 1 | | | | | | | | | | | | | |
| Q | Tytherleigh | 6 | 2 | 8 | 2 | 3 | | | | | | | | | | | | | | 1 | Crawford | 6 | 6 | 12 |
| 3 | Moon | 6 | 6 | 6 | | | | | | | | | | | | | | | | 8 | Turnbull | 2 | 2 | 10 |
| | Smith | 1 | 3 | 1 | | | 3 | Moon | 3 | 7 | 6 | | | | | | | | | | | | | |
| | Quist | w/o | | | | | | Quist | 6 | 5 | 3 | r | | | | | | | | | | | | |
| | G. Thomas | | | | | | | | | | | | 3 | Moon | 7 | 6 | 3 | 6 | 2 | | | | | |
| 8 | Turnbull | 6 | 6 | 6 | | | | | | | | | 8 | Turnbull | 9 | 2 | 6 | 4 | 6 | | | | | |
| | Purcell | 0 | 2 | 0 | | | 8 | Turnbull | 6 | 6 | 6 | | | | | | | | | | | | | |
| Q | O'Connor | 6 | 6 | 7 | | | Q | O'Connor | 1 | 1 | 2 | | | | | | | | | | | | | |
| | R. Thomas | 3 | 1 | 5 | | | | | | | | | | | | | | | | | | | | |

**Section 2**

| First round | First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 2 | Hopman | 6 | 6 | 4 | 6 | | | | | | | | | | | | | | | | | | | |
| | J. Willard | 1 | 3 | 6 | 1 | | 2 | Hopman | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Moore | w/o | | | | | | Moore | 2 | 4 | 1 | | | | | | | | | | | | | |
| | Du. Thompson | | | | | | | | | | | | | 2 | Hopman | 5 | 6 | 6 | 6 | | | | | |
| | A. Willard | 6 | 2 | 3 | 6 | 6 | | | | | | | | | A. Willard | 7 | 3 | 4 | 4 | | | | | |
| 6 | Dunlop | 0 | 6 | 6 | 3 | 4 | | A. Willard | 4 | 6 | 6 | 6 | | | | | | | | | | | | |
| Q | Chrystal | 6 | 6 | | | | Q | Chrystal | 6 | 2 | 2 | 1 | | | | | | | | | | | | |
| | Knight | 0 | 2 | r | | | | | | | | | | | | | | | | 2 | Hopman | 8 | 6 | 6 |
| 4 | Cummings | 5 | 6 | 6 | 6 | | | | | | | | | | | | | | | 4 | Cummings | 6 | 2 | 4 |
| | Schwartz | 7 | 2 | 3 | 0 | | 4 | Cummings | 3 | 3 | 6 | 7 | 6 | | | | | | | | | | | |
| | Donohoe | 6 | 6 | 3 | 6 | | | Donohoe | 6 | 6 | 1 | 5 | 3 | | | | | | | | | | | |
| | Shepherd | 1 | 1 | 6 | 3 | | | | | | | | | 4 | Cummings | 6 | 6 | 6 | | | | | | |
| 7 | Hassett | 6 | 6 | 5 | 8 | | | | | | | | | 7 | Hassett | 2 | 2 | 4 | | | | | | |
| | Ewin | 0 | 1 | 7 | 6 | | 7 | Hassett | w/o | | | | | | | | | | | | | | | |
| | Da. Thompson | 7 | 6 | 7 | | | | Da. Thompson | | | | | | | | | | | | | | | | |
| Q | Huxtable | 5 | 0 | 5 | | | | | | | | | | | | | | | | | | | | |
