Swimming at the 2013 World Aquatics Championships – Women's 100 metre freestyle
The women's 100 metre freestyle event in swimming at the 2013 World Aquatics Championships took place on 1–2 August at the Palau Sant Jordi in Barcelona, Spain.
Records
Prior to this competition, the existing world and championship records were:Results
Heats
The heats were held a 10:00.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 8 | 4 | Cate Campbell | 53.24 | Q | |
| 2 | 8 | 5 | Missy Franklin | 53.36 | Q | |
| 3 | 8 | 3 | Sarah Sjöström | 53.61 | Q | |
| 4 | 6 | 6 | Britta Steffen | 53.93 | Q | |
| 5 | 7 | 4 | Ranomi Kromowidjojo | 54.12 | Q | |
| 6 | 6 | 4 | Tang Yi | 54.21 | Q | |
| 6 | 7 | 6 | Femke Heemskerk | 54.21 | Q | |
| 8 | 8 | 6 | Shannon Vreeland | 54.25 | Q | |
| 9 | 6 | 3 | 54.42 | Q | ||
| 10 | 7 | 2 | Michelle Coleman | 54.53 | Q | |
| 11 | 8 | 2 | Veronika Popova | 54.53 | Q | |
| 12 | 7 | 3 | Bronte Campbell | 54.67 | Q | |
| 13 | 7 | 5 | Camille Muffat | 54.84 | Q, | |
| 14 | 6 | 7 | Pernille Blume | 54.88 | Q | |
| 15 | 7 | 1 | Qiu Yuhan | 54.93 | Q | |
| 16 | 5 | 2 | Karin Prinsloo | 55.05 | Q | |
| 17 | 7 | 8 | Evelyn Verrasztó | 55.08 | Q | |
| 18 | 8 | 1 | Charlotte Bonnet | 55.15 | ||
| 19 | 6 | 1 | Victoria Poon | 55.30 | ||
| 20 | 8 | 8 | Hanna-Maria Seppälä | 55.34 | ||
| 21 | 6 | 2 | Amy Smith | 55.40 | ||
| 22 | 8 | 7 | Daniela Schreiber | 55.44 | ||
| 23 | 6 | 8 | Melanie Costa | 55.51 | ||
| 24 | 6 | 0 | Erika Ferraioli | 55.54 | ||
| 25 | 5 | 4 | Kimberly Buys | 55.68 | NR | |
| 26 | 7 | 9 | Liliana Ibáñez | 55.70 | NR | |
| 27 | 7 | 0 | Rūta Meilutytė | 55.72 | ||
| 28 | 7 | 7 | Haruka Ueda | 55.78 | ||
| 29 | 5 | 6 | Samantha Lucie-Smith | 55.84 | ||
| 30 | 5 | 5 | Elmira Aigaliyeva | 55.89 | ||
| 31 | 8 | 9 | Nina Rangelova | 55.95 | ||
| 32 | 5 | 3 | Julie Meynen | 56.16 | ||
| 32 | 8 | 0 | Alessandra Marchioro | 56.16 | ||
| 34 | 4 | 4 | Sycerika McMahon | 56.19 | ||
| 35 | 4 | 3 | Jasmine Al-Khaldi | 56.37 | ||
| 36 | 5 | 8 | Isabella Arcila | 56.62 | ||
| 37 | 5 | 1 | Miroslava Najdanovski | 56.66 | ||
| 38 | 5 | 7 | Quah Ting Wen | 56.70 | ||
| 39 | 5 | 9 | Farida Osman | 56.84 | ||
| 40 | 6 | 9 | Aksana Dziamidava | 57.30 | ||
| 41 | 3 | 2 | Chinyere Pigot | 57.34 | ||
| 42 | 4 | 0 | Elisbet Gamez | 57.66 | ||
| 43 | 5 | 0 | Susann Bjørnsen | 56.73 | ||
| 44 | 4 | 6 | Anastasia Bogdanovski | 57.78 | ||
| 45 | 4 | 9 | Yamilé Bahamonde | 57.79 | ||
| 46 | 3 | 7 | Julimar Avila | 57.92 | ||
| 47 | 3 | 4 | Bayan Jumah | 58.13 | ||
| 48 | 4 | 7 | Pamela Benitez | 58.16 | ||
| 49 | 4 | 8 | Karen Torrez | 58.27 | ||
| 50 | 4 | 2 | Benjaporn Sriphanomithorn | 58.33 | ||
| 51 | 4 | 5 | Sabina Dostálová | 58.39 | ||
| 52 | 4 | 1 | Karen Riveros | 58.44 | ||
| 53 | 3 | 5 | Allyson Ponson | 58.61 | ||
| 54 | 1 | 6 | Heather Arseth | 58.73 | ||
| 55 | 3 | 3 | Monika Vasilyan | 59.08 | ||
| 56 | 3 | 6 | Sylvia Brunlehner | 59.18 | ||
| 57 | 3 | 9 | Rebecca Heyliger | 59.50 | ||
| 58 | 3 | 8 | Ana Nobrega | |||
| 59 | 3 | 1 | Mónica Ramírez | |||
| 60 | 3 | 0 | Jamila Lunkuse | |||
| 61 | 1 | 3 | Sabine Hazboun | |||
| 62 | 2 | 3 | Tiara Shahril | |||
| 63 | 2 | 5 | Sameera Al-Bitar | |||
| 64 | 2 | 4 | Britany van Lange | |||
| 65 | 2 | 6 | Merjen Saryyeva | |||
| 66 | 2 | 7 | Charissa Panuve | |||
| 67 | 2 | 2 | Rachel Wall | |||
| 68 | 2 | 1 | Dirngulbai Misech | |||
| 69 | 2 | 8 | Shreya Dhital | |||
| 70 | 1 | 4 | Karina Klimyk | |||
| 71 | 2 | 9 | Elsie Uwamahoro | |||
| 72 | 2 | 0 | Vivie Geneva Chamberlain | |||
| 73 | 1 | 5 | Nazlati Mohamed Andhumdine | |||
| 6 | 5 | Jeanette Ottesen |
Semifinals
The semifinals were held at 18:02.Semifinal 1
Semifinal 2
Final
The final was held at 18:02.| Rank | Lane | Name | Nationality | Time | Notes |
| 5 | Cate Campbell | 52.34 | |||
| 4 | Sarah Sjöström | 52.89 | |||
| 3 | Ranomi Kromowidjojo | 53.42 | |||
| 4 | 2 | Missy Franklin | 53.47 | ||
| 5 | 6 | Femke Heemskerk | 53.67 | ||
| 6 | 7 | Britta Steffen | 53.75 | ||
| 7 | 8 | Tang Yi | 54.27 | ||
| 8 | 1 | Shannon Vreeland | 54.49 |