The 2005 Indonesia Open in badminton was held in Jakarta, from September 19 to September 25, 2005. It was a six-star tournament and the prize money was US$250,000.
Final results edit
| Category | Winners | Runners-up | Score |
|---|---|---|---|
| Men's singles |  Lee Hyun-il
|
 Boonsak Ponsana
|
15–10, 15–3 |
| Women's singles |  Wang Chen
|
 Mia Audina
|
11–7, 11–1 |
| Men's doubles |  Markis Kido & Hendra Setiawan
|
Sigit Budiarto & Candra Wijaya
|
15–10, 12–15, 15–3 |
| Women's doubles | Lee Hyo-jung & Lee Kyung-won
|
 Chin Eei Hui & Wong Pei Tty
|
15–4, 15–5 |
| Mixed doubles | Nova Widianto & Liliyana Natsir
|
Anggun Nugroho & Yunita Tetty
|
15–13, 15–1 |