| Type: | grand slam |
| Score: | 5–7, 6–3, 7–5, 3–6, 6–2 |
| Draw: | 35 |
| Seeds: | 8 |
| Before Year: | 1940 |
John Bromwich defeated Dinny Pails 5–7, 6–3, 7–5, 3–6, 6–2 in the final to win the men's singles tennis title at the 1946 Australian Championships.
The seeded players are listed below. John Bromwich is the champion; others show the round in which they were eliminated.
John Bromwich (champion) Adrian Quist (semifinals) Dinny Pails (finalist) Harry Hopman (quarterfinals) Jack Crawford (third round) Geoffrey Brown (semifinals) Lionel Brodie (quarterfinals) Jack Harper (quarterfinals)