The 2005 Dutch Open in badminton was held in Den Bosch, Netherlands, from October 12, 2005 to October 16, 2005.
| Category | Winners | Runners-up | Score |
|---|---|---|---|
| Men's singles | | | 15–4, 15–12 |
| Women's singles | | | 11–7, 11–2 |
| Men's doubles | | | 15–7, 15–4 |
| Women's doubles | | | 15–9, 15–10 |
| Mixed doubles | | | 15–5, 15–5 |