| Singles | |
|---|---|
| 2005 ABN AMRO World Tennis Tournament | |
| Champion |
|
| Runner-up |
|
| Final score | 5–7, 7–5, 7–6(7–5) |
| Draw | 32 (4Q / 3WC) |
| Seeds | 8 |
Lleyton Hewitt was the defending champion, but chose not to participate that year.
Roger Federer won in the final 5–7, 7–5, 7–6(7–5), against Ivan Ljubičić.