Swimming at the 2011 World Aquatics Championships – Women's 50 metre freestyle
The women's 50 metre freestyle competition of the swimming events at the 2011 World Aquatics Championships was held on July 30 with the heats and the semifinals and July 31 with the final.
Records
Prior to the competition, the existing world and championship records were as follows.| Name | Nation | Time | Location | Date | |
| World record Championship record | Britta Steffen | 23.73 | Rome | August 2, 2009 |
Results
Heats
87 swimmers participated in 12 heats.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 11 | 4 | Therese Alshammar | 24.82 | Q | |
| 1 | 11 | 5 | Jessica Hardy | 24.82 | Q | |
| 3 | 12 | 5 | Aleksandra Gerasimenya | 24.85 | Q | |
| 4 | 10 | 5 | Dorothea Brandt | 24.86 | Q | |
| 5 | 10 | 4 | Marleen Veldhuis | 25.01 | Q | |
| 6 | 12 | 4 | Ranomi Kromowidjojo | 25.03 | Q | |
| 7 | 11 | 8 | Chantal van Landeghem | 25.05 | Q | |
| 7 | 12 | 3 | Francesca Halsall | 25.05 | Q | |
| 9 | 10 | 3 | Amanda Weir | 25.11 | Q | |
| 9 | 12 | 6 | Yolane Kukla | 25.11 | Q | |
| 11 | 10 | 8 | Theodora Drakou | 25.13 | Q | |
| 12 | 10 | 6 | Olivia Halicek | 25.18 | Q | |
| 13 | 12 | 2 | Jeanette Ottesen | 25.23 | Q | |
| 14 | 11 | 6 | Victoria Poon | 25.24 | Q | |
| 15 | 9 | 3 | Arianna Vanderpool-Wallace | 25.28 | Q, NR | |
| 16 | 10 | 7 | Yayoi Matsumoto | 25.34 | Q | |
| 17 | 12 | 7 | Triin Aljand | 25.41 | ||
| 18 | 12 | 8 | Flávia Delaroli | 25.47 | ||
| 19 | 9 | 5 | Darya Stepanyuk | 25.50 | ||
| 20 | 12 | 1 | Sviatlana Khakhlova | 25.54 | ||
| 21 | 9 | 8 | Ragnheidur Ragnarsdottir | 25.57 | ||
| 21 | 11 | 1 | Zhu Qianwei | 25.57 | ||
| 23 | 9 | 6 | Hanna-Maria Seppälä | 25.79 | ||
| 24 | 9 | 7 | Hannah Wilson | 25.82 | ||
| 25 | 10 | 2 | Karin Prinsloo | 25.89 | ||
| 25 | 10 | 1 | Svetlana Fedulova | 25.89 | ||
| 27 | 8 | 6 | Burcu Dolunay | 26.01 | NR | |
| 28 | 8 | 5 | Liliana Ibanez | 26.04 | ||
| 29 | 9 | 2 | Miroslava Najdanovski | 26.09 | ||
| 30 | 9 | 1 | Amanda Lim | 26.12 | ||
| 31 | 8 | 4 | Cecilie Johannessen | 26.14 | ||
| 32 | 8 | 2 | Chinyere Pigot | 26.19 | ||
| 33 | 8 | 7 | Gabriela Nikitina | 26.20 | NR | |
| 34 | 8 | 3 | Lai Kwan Chui | 26.22 | ||
| 35 | 8 | 8 | Megan Fonteno | 26.46 | ||
| 36 | 8 | 1 | Katarina Filova | 26.83 | ||
| 37 | 7 | 6 | Anna-Liza Mopio | 26.91 | ||
| 38 | 7 | 3 | Nicole Horn | 27.01 | ||
| 39 | 6 | 5 | Karen Torrez | 27.08 | ||
| 40 | 7 | 7 | Jessica Vieira | 27.11 | ||
| 41 | 7 | 4 | Clelia Tini | 27.15 | ||
| 42 | 7 | 2 | Cherelle Thompson | 27.21 | ||
| 43 | 7 | 8 | Kiera Aitken | 27.38 | ||
| 44 | 7 | 1 | Christine Briedenhann | 27.46 | ||
| 45 | 7 | 5 | Nicola Muscat | 27.56 | ||
| 46 | 6 | 3 | Talita Baqlah | 27.71 | ||
| 47 | 6 | 4 | Karen Schulz | 27.76 | ||
| 48 | 6 | 6 | Fabiola Isabel Espinoza | 28.18 | ||
| 49 | 5 | 5 | Zamantha Hoss | 28.19 | ||
| 50 | 9 | 4 | Sylvia Brunlehner | 28.20 | ||
| 51 | 6 | 7 | Jamila Lunkuse | 28.34 | ||
| 52 | 5 | 4 | Ifiezegbe Gagbe | 28.35 | ||
| 53 | 5 | 7 | Ann-Marie Hepler | 28.43 | ||
| 54 | 6 | 8 | Monica Vasilyan | 28.51 | ||
| 55 | 6 | 1 | Pilar Shimizu | 28.71 | ||
| 56 | 5 | 3 | Hazboun Sabine | 29.16 | ||
| 57 | 5 | 8 | Keesha Keane | 29.33 | ||
| 58 | 5 | 6 | Celeste Brown | 29.59 | ||
| 59 | 6 | 2 | Siona Huxley | 29.79 | ||
| 60 | 5 | 1 | Amelie Trinquier | 29.94 | ||
| 61 | 5 | 2 | Magdalena Moshi | 30.01 | ||
| 62 | 4 | 2 | Deandra van der Colff | 30.60 | ||
| 63 | 3 | 2 | Mariana Henriques | 30.83 | ||
| 64 | 3 | 6 | Antoinette Guedia Mouafo | 30.84 | ||
| 65 | 4 | 3 | Grace Kimball | 30.94 | ||
| 66 | 4 | 7 | Osisang Chilton | 31.07 | ||
| 67 | 4 | 5 | Katerina Izmaylova | 31.38 | ||
| 68 | 3 | 3 | Alphonsine Agahozo | 31.41 | ||
| 68 | 4 | 1 | Karin O'Reilly Clashing | 31.41 | ||
| 70 | 4 | 6 | Vitiny Hemthon | 31.45 | ||
| 71 | 4 | 8 | Faleumata Samassekou | 32.40 | ||
| 72 | 3 | 8 | Shreya Dhital | 32.44 | ||
| 73 | 3 | 1 | Gebremedhin Yanet Seyoum | 33.17 | ||
| 74 | 3 | 5 | Shajan Aminath | 33.43 | ||
| 75 | 2 | 6 | Angelika Sita Ouedraogo | 33.54 | ||
| 76 | 3 | 4 | Sara Al Flaij | 33.98 | ||
| 77 | 2 | 2 | Toure Assita | 34.45 | ||
| 78 | 2 | 7 | Elsie Uwamahoro | 35.11 | ||
| 79 | 2 | 4 | Vilayphone Vongphachanh | 35.99 | ||
| 80 | 1 | 5 | Aminata Aboubakar Yacoub | 37.07 | ||
| 81 | 2 | 1 | Mhasin El Nour Fadlalla | 38.15 | ||
| 82 | 2 | 3 | Aicha Hassan Abdillahi | 38.38 | ||
| 83 | 2 | 5 | Angele Gbenou | 38.40 | ||
| 84 | 1 | 3 | Nafissa Adamou | 43.36 | ||
| 85 | 2 | 8 | Ingrid Outtara | 44.43 | ||
| 86 | 1 | 2 | Adzo Rebecca Kpossi | 44.60 | ||
| 87 | 4 | 4 | Masempe Theko | 49.75 | ||
| – | 1 | 1 | Vandenboss Samira | DNS | ||
| – | 1 | 4 | Soukeina Abdellahi | DNS | ||
| – | 1 | 6 | Maihi Asono-Nathalie | DNS | ||
| – | 1 | 7 | Ophelia Swyne | DNS | ||
| – | 1 | 8 | Nganga-Ngbo Tania | DNS | ||
| – | 3 | 7 | Sophia Adecky | DNS | ||
| – | 11 | 3 | Britta Steffen | DNS | ||
| – | 11 | 7 | Li Zhesi | DNS |
Semifinals
The semifinals were held at 18:57.Semifinal 1
Semifinal 2
Final
The final was held at 18:20.| Rank | Lane | Name | Nationality | Time | Notes |
| 3 | Therese Alshammar | 24.14 | |||
| 4 | Ranomi Kromowidjojo | 24.27 | |||
| 7 | Marleen Veldhuis | 24.49 | |||
| 4 | 2 | Francesca Halsall | 24.60 | ||
| 5 | 6 | Aleksandra Gerasimenya | 24.65 | ||
| 6 | 5 | Jeanette Ottesen | 24.67 | ||
| 7 | 8 | Arianna Vanderpool-Wallace | 24.79 | NR | |
| 8 | 1 | Jessica Hardy | 24.87 |