The Duet technical routine competition of the Synchronised swimming events at the 2011 World Aquatics Championships was held on July 17 with the preliminary round and the final on July 18.
| width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze |
Natalia Ishchenko Svetlana Romashina Alexandra Zueva (reserve) | Huang Xuechen Liu Ou Luo Xi (reserve) | Ona Carbonell Andrea Fuentes |
The preliminary round was held at 14:00 local time.[1] The final was held at 19:15 on the following day.[2]
Green denotes finalists
| Rank | Diver | Nationality | Preliminary | Final | |||
|---|---|---|---|---|---|---|---|
| Points | Rank | Points | Rank | ||||
| Natalia Ishchenko Svetlana Romashina | 97.500 | 1 | 98.200 | 1 | |||
| Huang Xuechen Liu Ou | 95.800 | 2 | 96.500 | 2 | |||
| Ona Carbonell Andrea Fuentes | 94.400 | 3 | 95.400 | 3 | |||
| 4 | Élise Marcotte Marie-Pier Boudreau Gagnon | 93.900 | 4 | 94.100 | 4 | ||
| 5 | Yukiko Inui Chisa Kobayashi | 92.600 | 5 | 92.800 | 5 | ||
| 6 | Daria Iushko Kseniya Sydorenko | 90.900 | 6 | 91.300 | 6 | ||
| 7 | Giulia Lapi Mariangela Perrupato | 89.900 | 7 | 90.100 | 7 | ||
| 8 | Sara Labrousse Chloé Willhelm | 88.500 | 9 | 88.900 | 8 | ||
| 9 | Mary Killman Lyssa Wallace | 89.000 | 8 | 88.500 | 9 | ||
| 10 | Olivia Allison Jenna Randall | 87.800 | 10 | 87.300 | 10 | ||
| 11 | Evangelia Platanioti Despoina Solomou | 87.600 | 11 | 87.200 | 11 | ||
| 12 | Nayara Figueira Lara Teixeira | 87.400 | 12 | 86.000 | 12 | ||
| 13 | Jang Hyang-Mi Wang Ok-Gyong | 86.700 | 13 | ||||
| 14 | Anastasia Gloushkov Inna Yoffe | 86.000 | 14 | ||||
| 15 | Park Hyun-Ha Park Hyun-sun | 85.500 | 15 | ||||
| 15 | Soňa Bernardová Alžběta Dufková | 85.500 | 15 | ||||
| 17 | Anna Kulkina Aigerim Zhexembinova | 85.400 | 17 | ||||
| 18 | Elisabeth Sneeuw Nicolien Wellen | 83.700 | 18 | ||||
| 19 | Pamela Fischer Anja Nyffeler | 83.200 | 19 | ||||
| 20 | Mariana Cifuentes Evelyn Guajardo | 82.900 | 20 | ||||
| 21 | Eszter Czékus Szofi Kiss | 82.300 | 21 | ||||
| 22 | Nadine Brandl Livia Lang | 82.000 | 22 | ||||
| 23 | Nastassia Mekhanikava Darya Navaselskaya | 79.800 | 23 | ||||
| 24 | Etel Sánchez Sofia Sánchez | 79.200 | 24 | ||||
| 25 | Dasa Baloghova Jana Labathova | 77.300 | 25 | ||||
| 26 | Eloise Amberger Sarah Bombell | 76.400 | 26 | ||||
| 27 | Wiebke Jeske Edith Zeppenfeld | 75.800 | 27 | ||||
| 28 | Mónica Arango Jennifer Cerquera | 75.600 | 28 | ||||
| 28 | Dalia Mohamed Elgebaly Reem Wail Abdalazem | 75.600 | 28 | ||||
| 30 | Iglika Goleminova Kalina Yordanova | 74.400 | 30 | ||||
| 31 | Anastasiya Ruzmetova Anastasiya Zdraykovakaya | 74.300 | 31 | ||||
| 32 | Katrina Ann Hui Chuen Png | 72.900 | 32 | ||||
| 33 | Cristina Nicolini Elena Tini | 71.900 | 33 | ||||
| 34 | Melis Öner Tuğçe Tanış | 71.800 | 34 | ||||
| 35 | Lianne Caraballo Darlys Rodríguez | 71.400 | 35 | ||||
| 35 | Rosamaria Avila Fredmary Zambrano | 71.400 | 35 | ||||
| 37 | Arthittaya Kittithanatphum Nantaya Polsen | 67.800 | 37 | ||||
| 38 | Caitlin Anderson Kirstin Anderson | 67.600 | 38 | ||||
| 39 | Stephanie Chen Hui Yu Yap | 67.200 | 39 | ||||
| 40 | Nadezhda Gómez Violeta Mitinian | 65.800 | 40 | ||||
| 41 | Megawati Suyanto Samara Talia Pattiasina | 62.800 | 41 | ||||
| 42 | Emma Manners-Wood Nicola David | 61.500 | 42 | ||||