1991 Australian Open – Men's singles
| Men's singles | |
|---|---|
| 1991 Australian Open | |
| Champion | Boris Becker |
| Runner-up | Ivan Lendl |
| Score | 1–6, 6–4, 6–4, 6–4 |
| Draw | 128 |
| Seeds | 16 |
Boris Becker defeated two-time defending champion Ivan Lendl in the final, 1–6, 6–4, 6–4, 6–4 to win the men's singles tennis title at the 1991 Australian Open. It was his first Australian Open title and fifth major singles title overall.