2009 Australian Open – Women's singles
| Women's singles | |
|---|---|
| 2009 Australian Open | |
| Champion | Serena Williams |
| Runner-up | Dinara Safina |
| Score | 6–0, 6–3 |
| Draw | 128 (12 Q / 8 WC ) |
| Seeds | 32 |
Serena Williams defeated Dinara Safina in the final, 6–0, 6–3 to win the women's singles tennis title at the 2009 Australian Open. It was her fourth Australian Open singles title and tenth major singles title overall. With the win, Williams regained the world No. 1 ranking.
Maria Sharapova was the reigning champion, but withdrew from the tournament due to a recurring shoulder injury.
This was also the first Australian Open to feature three Russian semifinalists, those being Safina, Vera Zvonareva and Elena Dementieva.