# 2011 BWF World Championships – Mixed doubles

The mixed doubles tournament of the 2011 BWF World Championships (World Badminton Championships) was held from August 8 to 14. Zheng Bo and Ma Jin were the defending champions. Zhang Nan and Zhao Yunlei won the title after defeating Chris Adcock and Imogen Bankier 21–15, 21–7 in the final.

## Seeds

* Zhang Nan / Zhao Yunlei (champions)
* Tantowi Ahmad / Lilyana Natsir (semifinals)
* Sudket Prapakamol / Saralee Thoungthongkam (second round)
* Tao Jiaming / Tian Qing (quarterfinals)
* Joachim Fischer Nielsen / Christinna Pedersen (quarterfinals)
* Xu Chen / Ma Jin (semifinals, retired)
* Chen Hung-ling / Cheng Wen-hsing (quarterfinals)
* Songphon Anugritayawon / Kunchala Voravichitchaikul (second round)
* Fran Kurniawan / Pia Zebadiah Bernadeth (second round)
* Nathan Robertson / Jenny Wallwork (second round)
* Lee Sheng-mu / Chien Yu-chin(third round)
* Thomas Laybourn / Kamilla Rytter Juhl (third round)
* Michael Fuchs / Birgit Michels (third round)
* Robert Mateusiak / Nadieżda Zięba (third round)
* Shintaro Ikeda / Reiko Shiota (third round)
* Valiyaveetil Diju / Jwala Gutta (third round)

## Draw
### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Zhang Nan Zhao Yunlei | 21 | 21 | | | | | | | | |
| 7 | Chen Hung-ling Cheng Wen-hsing | 14 | 14 | | | | | | | | |
| 7 | Chen Hung-ling Cheng Wen-hsing | 14 | 14 | 1 | Zhang Nan Zhao Yunlei | 21 | | | | | |
| | | | | 6 | Xu Chen Ma Jin | 17$^r$ | | | | | |
| | Chayut Triyachart Yao Lei | 16 | 7 | 6 | Xu Chen Ma Jin | 17$^r$ | | | | | |
| 6 | Xu Chen Ma Jin | 21 | 21 | | | | | | | | |
| 6 | Xu Chen Ma Jin | 21 | 21 | | | | | 1 | Zhang Nan Zhao Yunlei | 21 | 21 |
| | | | | | | | | | Chris Adcock Imogen Bankier | 15 | 7 |
| | Chris Adcock Imogen Bankier | 21 | 21 | | | | | | | | | Chris Adcock Imogen Bankier | 15 | 7 |
| 4 | Tao Jiaming Tian Qing | 16 | 18 | | | | | | | | |
| 4 | Tao Jiaming Tian Qing | 16 | 18 | | Chris Adcock Imogen Bankier | 21 | 21 | | | | |
| | | | | 2 | Tantowi Ahmad Lilyana Natsir | 16 | 19 | | | | |
| 5 | Joachim Fischer Nielsen Christinna Pedersen | 12 | 13 | 2 | Tantowi Ahmad Lilyana Natsir | 16 | 19 | | | | |
| 2 | Tantowi Ahmad Lilyana Natsir | 21 | 21 | | | | | | | | |

### Section 1

| First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Third Round | Quarterfinal | Quarterfinal | Quarterfinal | Quarterfinal |
| | | | 1 | Zhang N Zhao YL | 21 | 21 | | | | | | | | | |
| | | | | Wong WH Chau HW | 10 | 13 | | | | | | | | | |
| | | | | | | | 1 | Zhang N Zhao YL | 21 | 21 | | | | | |
| | | | | | | | 13 | M Fuchs B Michels | 13 | 18 | | | | | |
| | | | 13 | M Fuchs B Michels | 23 | 21 | | | | | | | | | |
| Z Durkinjak S Poznanović | 17 | 12 | | V Durkin N Vislova | 21 | 18 | | | | | | | | | |
| V Durkin N Vislova | 21 | 21 | | | | | | | | | | 1 | Zhang N Zhao YL | 21 | 21 |
| | | | | | | | | | | | | 7 | Chen H-l Cheng W-h | 14 | 14 |
| | | | 7 | Chen H-l Cheng W-h | 21 | 21 | | | | | | | | | |
| H Hashimoto M Fujii | 21 | 21 | | H Hashimoto M Fujii | 16 | 12 | | | | | | | | | |
| A Liu J Ko | 17 | 6 | | | | | 7 | Chen H-l Cheng W-h | 15 | 22 | 21 | | | | |
| | | | | | | | 12 | T Laybourn K Rytter Juhl | 21 | 20 | 19 | | | | |
| | | | 12 | T Laybourn K Rytter Juhl | 21 | 21 | | | | | | | | | |
| M Kido L Nurlita | wo | | | W Szkudlarczyk A Wojtkowska | 16 | 17 | | | | | | | | | |
| W Szkudlarczyk A Wojtkowska | | | | | | | | | | | | | | | |

### Section 2

| First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 3 | S Prapakamol S Thoungthongkam | 14 | 19 | | | | | | | | | |
| A Dumartheray S Jaquet | 21 | 12 | 6 | | C Triyachart Yao L | 21 | 21 | | | | | | | | | |
| C Triyachart Yao L | 17 | 21 | 21 | | | | | | | C Triyachart Yao L | 21 | 21 | | | | |
| | | | | | | | | | | Chan PS Goh LY | 19 | 14 | | | | |
| | | | | 10 | N Robertson J Wallwork | 19 | 19 | | | | | | | | | |
| L Muñoz C Gonzalez | 9 | 5 | | | Chan PS Goh LY | 21 | 21 | | | | | | | | | |
| Chan PS Goh LY | 21 | 21 | | | | | | | | | | | | C Triyachart Yao L | 16 | 7 |
| | | | | | | | | | | | | | 6 | Xu C Ma J | 21 | 21 |
| | | | | 6 | Xu C Ma J | 21 | 21 | | | | | | | | | |
| R Pacheco C Rivero | wo | | | | J Arends S Piek | 11 | 7 | | | | | | | | | |
| J Arends S Piek | | | | | | | | | 6 | Xu C Ma J | 21 | 21 | | | | |
| | | | | | | | | | | Fang C-m Wang P-r | 9 | 8 | | | | |
| | | | | 9 | F Kurniawan PZ Bernadeth | 13 | 21 | 19 | | | | | | | | |
| S Makarski D Dimova | 10 | 21 | | | Fang C-m Wang P-r | 21 | 11 | 21 | | | | | | | | |
| Fang C-m Wang P-r | 21 | 23 | | | | | | | | | | | | | | |

### Section 3

| First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| R Zirnwald E Baldauf | 21 | 21 | | | | | | | | | | | | | | | |
| A Konakh A Zaitsava | 19 | 13 | | | R Zirnwald E Baldauf | 9 | 10 | | | | | | | | | | |
| | | | | 15 | S Ikeda R Shiota | 21 | 21 | | | | | | | | | | |
| | | | | | | | | | 15 | S Ikeda R Shiota | 21 | 15 | 16 | | | | |
| C Adcock I Bankier | 21 | 21 | | | | | | | | C Adcock I Bankier | 17 | 21 | 21 | | | | |
| T Ng G Gao | 11 | 14 | | | C Adcock I Bankier | 24 | 21 | | | | | | | | | | |
| | | | | 8 | S Anugritayawon K Voravichitchaikul | 22 | 19 | | | | | | | | | | |
| | | | | | | | | | | | | | | | C Adcock I Bankier | 21 | 21 |
| MP Kolding J Houmann | 21 | 21 | | | | | | | | | | | | 4 | Tao JM Tian Q | 16 | 18 |
| M Rijal D Susanto | 17 | 19 | | | MP Kolding J Houmann | 16 | 21 | 18 | | | | | | | | | |
| | | | | 14 | R Mateusiak N Zięba | 21 | 16 | 21 | | | | | | | | | |
| | | | | | | | | | 14 | R Mateusiak N Zięba | 15 | 22 | 16 | | | | |
| D Khodabux S Barning | 19 | 21 | 21 | | | | | | 4 | Tao JM Tian Q | 21 | 20 | 21 | | | | |
| J Schöttler S Marinello | 21 | 16 | 14 | | D Khodabux S Barning | 8 | 13 | | | | | | | | | | |
| | | | | 4 | Tao JM Tian Q | 21 | 21 | | | | | | | | | | |

### Section 4

| First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| Liao M-c Chen H-h | 18 | 16 | | | | | | | | | | | | | | |
| Ong JG Chong SC | 21 | 21 | | | Ong JG Chong SC | 11 | 15 | | | | | | | | | |
| | | | | 16 | V Diju J Gutta | 21 | 21 | | | | | | | | | |
| | | | | | | | | | 16 | V Diju J Gutta | 9 | 15 | | | | |
| V Atrashchenkov E Prus | 21 | 21 | | | | | | | 5 | J Fischer Nielsen C Pedersen | 21 | 21 | | | | |
| DL James MC Edwards | 18 | 14 | | | V Atrashchenkov E Prus | 9 | 13 | | | | | | | | | |
| | | | | 5 | J Fischer Nielsen C Pedersen | 21 | 21 | | | | | | | | | |
| | | | | | | | | | | | | | 5 | J Fischer Nielsen C Pedersen | 12 | 13 |
| M Ellis H Olver | 12 | 13 | | | | | | | | | | | 2 | T Ahmad L Natsir | 21 | 21 |
| A Nikolaenko V Sorokina | 21 | 21 | | | A Nikolaenko V Sorokina | 18 | 21 | 15 | | | | | | | | |
| | | | | 11 | Lee S-m Chien Y-c | 21 | 15 | 21 | | | | | | | | |
| | | | | | | | | | 11 | Lee S-m Chien Y-c | 9 | 12 | | | | |
| S Magee C Magee | 18 | 22 | 21 | | | | | | 2 | T Ahmad L Natsir | 21 | 21 | | | | |
| B Careme L Choinet | 21 | 20 | 19 | | S Magee C Magee | 9 | 8 | | | | | | | | | |
| | | | | 2 | T Ahmad L Natsir | 21 | 21 | | | | | | | | | |