Swimming at the 2013 World Aquatics Championships – Women's 100 metre backstroke
The women's 100 metre backstroke event in swimming at the 2013 World Aquatics Championships took place on 29–30 July 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 at 10:00.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 4 | Missy Franklin | | | Q |
| 2 | 4 | 6 | Katinka Hosszú | | | Q, NR, |
| 3 | 5 | 5 | Elizabeth Pelton | | | Q |
| 4 | 3 | 5 | Fu Yuanhui | | 1:00.01 | Q |
| 5 | 5 | 4 | Emily Seebohm | | 1:00.02 | Q |
| 6 | 4 | 3 | Simona Baumrtová | | 1:00.05 | Q |
| 7 | 3 | 4 | Aya Terakawa | | 1:00.09 | Q |
| 8 | 5 | 3 | Sinead Russell | | 1:00.17 | Q |
| 9 | 4 | 5 | Belinda Hocking | | 1:00.39 | Q |
| 10 | 5 | 2 | Daryna Zevina | | 1:00.43 | Q |
| 11 | 4 | 2 | Cloe Credeville | | 1:00.70 | Q |
| 12 | 3 | 6 | Duane Da Rocha | | 1:00.80 | Q |
| 13 | 4 | 7 | Zhou Yanxin | | 1:00.99 | Q |
| 14 | 3 | 1 | Mercedes Peris | | 1:01.19 | Q |
| 15 | 3 | 3 | Lauren Quigley | | 1:01.23 | Q |
| 16 | 3 | 0 | Karin Prinsloo | | 1:01.25 | Q |
| 17 | 4 | 1 | Kimberly Buys | | 1:01.35 | Q |
| 18 | 5 | 0 | Carolina Colorado Henao | | 1:01.41 | |
| 19 | 5 | 6 | Georgia Davies | | 1:01.61 | |
| 20 | 5 | 1 | Eygló Ósk Gústafsdóttir | | 1:01.71 | |
| 21 | 3 | 7 | Etiene Medeiros | | 1:01.75 | |
| 22 | 5 | 9 | Klaudia Nazieblo | | 1:01.77 | |
| 23 | 5 | 8 | María Fernanda González | | 1:01.84 | |
| 24 | 1 | 9 | Daria Ustinova | | 1:02.04 | |
| 25 | 2 | 5 | Stephanie Au | | 1:02.10 | |
| 26 | 2 | 6 | Gisela Morales | | 1:02.12 | |
| 27 | 3 | 9 | Yekaterina Rudenko | | 1:02.49 | |
| 28 | 3 | 2 | Sayaka Akase | | 1:02.51 | |
| 29 | 4 | 9 | Ekaterina Avramova | | 1:02.79 | |
| 30 | 2 | 4 | Halime Zeren | | 1:02.91 | |
| 31 | 4 | 8 | Selina Hocke | | 1:02.94 | |
| 32 | 5 | 7 | Kristina Steins | | 1:03.15 | |
| 33 | 3 | 8 | Tao Li | | 1:03.31 | |
| 34 | 2 | 8 | Zanre Oberholzer | | 1:03.36 | |
| 35 | 2 | 3 | Yulduz Kuchkarova | | 1:03.54 | |
| 36 | 2 | 9 | Tatiana Perstniova | | 1:03.59 | |
| 37 | 4 | 0 | Kim Ji-Hyun | | 1:04.66 | |
| 38 | 2 | 1 | Karen Vilorio | | 1:04.79 | |
| 39 | 2 | 2 | McKayla Lightbourn | | 1:04.97 | |
| 40 | 2 | 0 | Birita Debes | | 1:05.64 | NR |
| 41 | 2 | 7 | Inés Remersaro | | 1:06.70 | |
| 42 | 1 | 4 | Siona Huxley | | 1:09.05 | |
| 43 | 1 | 3 | Evelina Afoa | | 1:09.11 | |
| 44 | 1 | 5 | Kuan Weng I | | 1:09.70 | |
| 44 | 1 | 6 | Nadeera Jayasekera | | 1:09.70 | |
| 46 | 1 | 7 | Caylee Watson |  Virgin Islands | 1:09.90 | NR |
| 47 | 1 | 2 | Elvira Hasanova | | 1:10.47 | |
| 48 | 1 | 8 | Nur Hamizah Ahmad | | 1:13.25 | |
| 49 | 1 | 1 | Altansukh Nomin | | 1:18.95 | |
| 50 | 1 | 0 | Vivie Geneva Chamberlain | | 1:29.16 | |
Semifinals
The semifinals were held at 18:55.Semifinal 1
Semifinal 2
Final
The final was held at 18:10.
| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Missy Franklin | | 58.42 | |
| 5 | Emily Seebohm | | 59.06 | |
| 6 | Aya Terakawa | | 59.23 | |
| 4 | 3 | Elizabeth Pelton | | 59.45 | |
| 5 | 2 | Fu Yuanhui | | 59.61 | |
| 6 | 1 | Simona Baumrtová | | 59.84 | NR |
| 7 | 7 | Daryna Zevina | | | |
| 8 | 8 | Belinda Hocking | | | |
