# 1948 Australian Championships – Men's singles

Adrian Quist defeated John Bromwich 6–4, 3–6, 6–3, 2–6, 6–3 in the final to win the men's singles tennis title at the 1948 Australian Championships.

## Seeds

The seeded players are listed below. Adrian Quist is the champion; others show the round in which they were eliminated.
* John Bromwich (finalist)
* Adrian Quist (champion)
* Bill Sidwell (semifinals)
* Geoffrey Brown (semifinals)
* Colin Long (quarterfinals)
* Frank Sedgman (quarterfinals)
* Lionel Brodie (third round)
* Robert McCarthy (quarterfinals)
* James Brink (third round)
* Eddie Moylan (quarterfinals)

## Draw
### Key

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

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | Final |
| 1 | John Bromwich | 6 | 6 | 6 | | | | | | | | | | | | | | | |
| 6 | Frank Sedgman | 2 | 4 | 4 | | | | | | | | | | | | | | | |
| 6 | Frank Sedgman | 2 | 4 | 4 | | 1 | John Bromwich | 3 | 2 | 6 | 6 | 7 | | | | | | | |
| | | | | | | 4 | Geoffrey Brown | 6 | 6 | 4 | 4 | 5 | | | | | | | |
| 4 | Geoffrey Brown | 7 | 6 | 2 | 7 | 4 | Geoffrey Brown | 6 | 6 | 4 | 4 | 5 | | | | | | | |
| 10 | Eddie Moylan | 5 | 2 | 6 | 5 | | | | | | | | | | | | | | |
| 10 | Eddie Moylan | 5 | 2 | 6 | 5 | | | | | | | | 1 | John Bromwich | 4 | 6 | 3 | 6 | 3 |
| | | | | | | | | | | | | | 2 | Adrian Quist | 6 | 3 | 6 | 2 | 6 |
| 5 | Colin Long | 2 | 7 | 2 | 0 | | | | | | | | | | | | | | | 2 | Adrian Quist | 6 | 3 | 6 | 2 | 6 |
| 3 | Bill Sidwell | 6 | 5 | 6 | 6 | | | | | | | | | | | | | | |
| 3 | Bill Sidwell | 6 | 5 | 6 | 6 | 3 | Bill Sidwell | 1 | 2 | 6 | 3 | | | | | | | | |
| | | | | | | 2 | Adrian Quist | 6 | 6 | 1 | 6 | | | | | | | | |
| 8 | Robert McCarthy | 3 | 2 | 3 | | 2 | Adrian Quist | 6 | 6 | 1 | 6 | | | | | | | | |
| 2 | Adrian Quist | 6 | 6 | 6 | | | | | | | | | | | | | | | |

### Earlier rounds
#### Section 1

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 1 | Bromwich | 6 | 6 | 6 | | | | | | | | | | | |
| | | | | | Lonergan | 0 | 0 | 1 | | | | | | | | | | | |
| | | | | | | | | | | 1 | Bromwich | 6 | 6 | 6 | | | | | |
| | | | | | | | | | | | Rogers | 1 | 1 | 0 | | | | | |
| | | | | | Candy | 2 | 5 | 5 | | | | | | | | | | | |
| Rogers | 7 | 2 | 7 | | Rogers | 6 | 7 | 7 | | | | | | | | | | | |
| Murrels | 5 | 6 | 5 | | | | | | | | | | | | 1 | Bromwich | 6 | 6 | 6 |
| | | | | | | | | | | | | | | | 6 | Sedgman | 2 | 4 | 4 |
| | | | | 6 | Sedgman | 6 | 6 | 6 | | | | | | | | | | | |
| | | | | | Gaydon | 2 | 2 | 3 | | | | | | | | | | | |
| | | | | | | | | | | 6 | Sedgman | 6 | 6 | 6 | | | | | |
| | | | | | | | | | | | Crawford | 4 | 4 | 2 | | | | | |
| | | | | | Crawford | 6 | 6 | 3 | 6 | | | | | | | | | | |
| Tregonning | 8 | 9 | 9 | | Tregonning | 4 | 3 | 6 | 3 | | | | | | | | | | |
| Pye | 6 | 7 | 7 | | | | | | | | | | | | | | | | |

#### Section 2

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 4 | Brown | 6 | 7 | 6 | | | | | | | | | | | | | |
| | Molloy | 3 | 5 | 4 | | | | | | | | | | | | | |
| | | | | | | | 4 | Brown | 6 | 7 | 6 | | | | | | |
| | | | | | | | | Warhurst | 0 | 5 | 0 | | | | | | |
| | Warhurst | 6 | 6 | 1 | 0 | 8 | | | | | | | | | | | |
| | Stewart | 2 | 1 | 6 | 6 | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | 4 | Brown | 7 | 6 | 2 | 7 |
| | | | | | | | | | | | | 10 | Moylan | 5 | 2 | 6 | 5 |
| 7 | Brodie | 1 | 6 | 6 | 6 | | | | | | | | | | | | |
| | Wilderspin | 6 | 3 | 3 | 4 | | | | | | | | | | | | |
| | | | | | | | 7 | Brodie | 0 | 4 | 2 | | | | | | |
| | | | | | | | 10 | Moylan | 6 | 6 | 6 | | | | | | |
| | Worthington | 7 | 2 | 2 | 6 | 1 | | | | | | | | | | | |
| 10 | Moylan | 5 | 6 | 6 | 4 | 6 | | | | | | | | | | | |

#### Section 3

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 9 | Brink | 6 | 4 | 6 | 6 | 6 | | | | | | | | | | | | |
| | Hopman | 3 | 6 | 3 | 8 | 0 | | | | | | | | | | | | |
| | | | | | | | 9 | Brink | 6 | 4 | 0 | 3 | | | | | | |
| | | | | | | | 5 | Long | 4 | 6 | 6 | 6 | | | | | | |
| | Harrison | 0 | 4 | 3 | | | | | | | | | | | | | | |
| 5 | Long | 6 | 6 | 6 | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | 5 | Long | 2 | 7 | 2 | 0 |
| | | | | | | | | | | | | | 3 | Sidwell | 6 | 5 | 6 | 6 |
| | Liddle | 6 | 6 | 7 | 3 | 3 | | | | | | | | | | | | |
| | Newcombe | 1 | 4 | 9 | 6 | 6 | | | | | | | | | | | | |
| | | | | | | | | Newcombe | 1 | 3 | 1 | | | | | | | |
| | | | | | | | 3 | Sidwell | 6 | 6 | 6 | | | | | | | |
| | Bonner | 4 | 6 | 4 | | | | | | | | | | | | | | |
| 3 | Sidwell | 6 | 8 | 6 | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| Ewin | 6 | 6 | 6 | | | | | | | | | | | | | | | |
| Pym | 4 | 2 | 3 | | Ewin | 3 | 2 | 3 | | | | | | | | | | |
| | | | | | Tonkin | 6 | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | Tonkin | 7 | 1 | 6 | | | | | |
| Heathcote | 6 | 6 | 6 | | | | | | 8 | McCarthy | 9 | 6 | 8 | | | | | |
| Reid | 4 | 4 | 3 | | Heathcote | 2 | 2 | 3 | | | | | | | | | | |
| | | | | 8 | McCarthy | 6 | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 8 | McCarthy | 3 | 2 | 3 |
| | | | | | | | | | | | | | | 2 | Quist | 6 | 6 | 6 |
| | | | | | McGregor | 4 | 0 | 2 | | | | | | | | | | |
| | | | | | Dart | 6 | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | Dart | 1 | 3 | 4 | | | | | |
| | | | | | | | | | 2 | Quist | 6 | 6 | 6 | | | | | |
| | | | | | Vernon | 0 | 0 | 2 | | | | | | | | | | |
| | | | | 2 | Quist | 6 | 6 | 6 | | | | | | | | | | |