The 2005 All England Open was the 95th edition of the All England Open Badminton Championships. It was a four star tournament held in Birmingham, England, from March 8 to March 13, 2005.
| Category | Winners | Runners-up | Score |
|---|---|---|---|
| Men's singles | Chen Hong | Lin Dan | 8–15, 15–5, 15–2 |
| Women's singles | Xie Xingfang | Zhang Ning | 11–3, 11–9 |
| Men's doubles | Cai Yun & Fu Haifeng | Lars Paaske & Jonas Rasmussen | 15–10, 15–6 |
| Women's doubles | Gao Ling & Huang Sui | Wei Yili & Zhao Tingting | 15–10, 15–13 |
| Mixed doubles | Nathan Robertson & Gail Emms | Thomas Laybourn & Kamilla Rytter Juhl | 15–10, 15–12 |
| Preceded by 2004 All England |
All England Open Badminton Championships | Succeeded by 2006 All England |