| 2005 Badminton World Cup | |
| Dates: | 14 – 18 December 2005 |
| Number Edition: | 20th |
| Prize Money: | 250,000 |
| Location: | Yiyang, Hunan, China |
| Venue: | Olympic Park |
| Previous: | 1997 Yogyakarta |
| Next: | 2006 Yiyang |
The 2005 Badminton World Cup was the twentieth edition of an international tournament Badminton World Cup. The event was held at the Olympic Sports Park in Yiyang, Hunan, China from 14 to 18 December 2005. It was sanctioned by the International Badminton Federation and Table Tennis and Badminton Administration Center under China's State General Administration of Sport, with a total prize money of US$250,000.[1] This was the first time after 1997, this tournament was being conducted. Between 1997 and 2005, this tournament was halted due to various problems.[2] In the end of the competitions, China won the titles in all 5 disciplines.[3]
| Men's singles |  Lin Dan |  Boonsak Ponsana |  Shon Seung-mo |
| Chen Hong | |||
| Women's singles | Xie Xingfang | Zhang Ning | Yao Jie |
| Lu Lan | |||
| Men's doubles | Cai Yun Fu Haifeng | Sigit Budiarto Candra Wijaya | Jens Eriksen Martin Lundgaard Hansen |
 Howard Bach Tony Gunawan | |||
| Women's doubles | Yang Wei Zhang Jiewen | Wei Yili Zhang Yawen | Zhang Dan Zhao Tingting |
| Ha Jung-eun Kim Min-jung | |||
| Mixed doubles | Xie Zhongbo Zhang Yawen | Nova Widianto Liliyana Natsir | Jens Eriksen Mette Schjoldager |
| Sudket Prapakamol Saralee Thungthongkam |