# Swimming at the 2013 World Aquatics Championships – Women's 50 metre breaststroke

The women's 50 metre breaststroke event in swimming at the 2013 World Aquatics Championships took place on 3–4 August at the Palau Sant Jordi in Barcelona, Spain.

## Records

Prior to this competition, the existing world and championship records were:
| World record | Jessica Hardy (USA) | 29.80 | Federal Way, United States | 7 August 2009 |
| Competition record | Yuliya Yefimova (RUS) | 30.09 | Rome, Italy | 2 August 2009 |
The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 29 July | Heats – Women's 100 metre breaststroke | Rūta Meilutytė | Lithuania | 29.97† | CR |
| 3 August | Heats | Yuliya Yefimova | Russia | 29.78 | WR, CR |
| 3 August | Semifinal 2 | Rūta Meilutytė | Lithuania | 29.48 | WR, CR |
† – en route to final mark

## Results
### Heats

The heats were held at 10:32.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 8 | 5 | Yuliya Yefimova | Russia | 29.78 | Q, WR |
| 2 | 8 | 4 | Jessica Hardy | United States | 29.99 | Q |
| 3 | 6 | 4 | Rūta Meilutytė | Lithuania | 30.07 | Q |
| 4 | 7 | 4 | Breeja Larson | United States | 30.46 | Q |
| 5 | 6 | 5 | Jennie Johansson | Sweden | 30.55 | Q, NR |
| 6 | 8 | 6 | Mariya Liver | Ukraine | 30.68 | Q, NR |
| 7 | 7 | 5 | Petra Chocová | Czech Republic | 30.77 | Q, NR |
| 8 | 8 | 3 | Moniek Nijhuis | Netherlands | 30.82 | Q |
| 9 | 7 | 6 | Fiona Doyle | Ireland | 30.93 | Q, NR |
| 10 | 7 | 3 | Alia Atkinson | Jamaica | 31.12 | Q |
| 11 | 7 | 8 | Marina García | Spain | 31.22 | Q |
| 12 | 6 | 3 | Rikke Møller Pedersen | Denmark | 31.23 | Q |
| 13 | 7 | 7 | Rebecca Ejdervik | Sweden | 31.39 | Q |
| 14 | 6 | 8 | He Yuzhe | China | 31.46 | Q |
| 15 | 8 | 8 | Samantha Marshall | Australia | 31.49 | Q |
| 16 | 5 | 8 | Hrafnhildur Lúthersdóttir | Iceland | 31.50 | Q, NR |
| 17 | 6 | 7 | Michela Guzzetti | Italy | 31.51 | |
| 18 | 7 | 9 | Kim Janssens | Belgium | 31.52 | NR |
| 19 | 6 | 2 | Valentina Artemyeva | Russia | 31.56 | |
| 20 | 6 | 6 | Beatriz Travalon | Brazil | 31.59 | |
| 21 | 8 | 1 | Viktoriya Solnceva | Ukraine | 31.63 | |
| 22 | 6 | 9 | Veera Kivirinta | Finland | 31.66 | |
| 23 | 5 | 5 | Amit Ivry | Israel | 31.67 | NR |
| 24 | 7 | 2 | Suo Ran | China | 31.70 | |
| 25 | 7 | 1 | Caroline Ruhnau | Germany | 31.73 | |
| 26 | 8 | 0 | Jessica Vall | Spain | 31.77 | |
| 27 | 8 | 2 | Lisa Fissneider | Italy | 31.94 | |
| 28 | 5 | 6 | Kim Go-Eun | South Korea | 31.95 | |
| 29 | 7 | 0 | Anna Makinen | Finland | 32.02 | |
| 30 | 8 | 7 | Tera van Beilen | Canada | 32.03 | |
| 31 | 6 | 0 | Henriette Brekke | Norway | 32.11 | |
| 32 | 5 | 7 | Julia Sebastian | Argentina | 32.28 | |
| 33 | 8 | 9 | Ivana Ninković | Bosnia and Herzegovina | 32.32 | |
| 34 | 5 | 4 | Rie Kaneto | Japan | 32.37 | |
| 35 | 4 | 7 | Yvette Man Yi Kong | Hong Kong | 32.56 | |
| 36 | 4 | 3 | Mercedes Toledo | Venezuela | 32.61 | NR |
| 37 | 3 | 4 | Samantha Yeo | Singapore | 32.69 | |
| 38 | 5 | 3 | Caroline Reitshammer | Austria | 32.72 | |
| 39 | 5 | 1 | Erica Dittmer | Mexico | 32.73 | |
| 40 | 5 | 2 | Sarah Vaisse | France | 32.74 | |
| 41 | 4 | 4 | Zuzana Mimovičová | Slovakia | 32.79 | |
| 42 | 1 | 2 | Dariya Talanova | Kyrgyzstan | 32.83 | |
| 43 | 3 | 6 | Tatiana Chişca | Moldova | 32.85 | |
| 44 | 5 | 0 | Ioana Alexandra Popa | Romania | 32.96 | |
| 45 | 4 | 2 | Tara-Lynn Nicholas | South Africa | 33.04 | |
| 46 | 4 | 9 | Mai Atef | Egypt | 33.08 | |
| 47 | 4 | 8 | Vangelina Draganova | Bulgaria | 33.10 | |
| 47 | 3 | 3 | Christina Loh | Malaysia | 33.10 | |
| 49 | 5 | 9 | Lei On Kei | Macau | 33.37 | |
| 50 | 4 | 6 | Monica Álvarez | Colombia | 33.39 | |
| 50 | 3 | 5 | Chen I-chuan | Chinese Taipei | 33.39 | |
| 52 | 4 | 5 | Miriam Corsini | Mozambique | 33.45 | |
| 53 | 4 | 0 | Evita Leter | Suriname | 33.55 | |
| 54 | 4 | 1 | Maria Romanjuk | Estonia | 33.56 | |
| 55 | 3 | 7 | Pilar Shimizu | Guam | 34.20 | |
| 56 | 3 | 8 | Tilka Paljk | Zambia | 34.28 | |
| 57 | 2 | 4 | Vanessa Rivas | Dominican Republic | 34.52 | NR |
| 58 | 3 | 9 | Tegan McCarthy | Papua New Guinea | 34.81 | |
| 59 | 3 | 1 | Rachael Tonjor | Nigeria | 35.41 | |
| 60 | 3 | 2 | Natalia Gomez | Costa Rica | 35.49 | |
| 61 | 2 | 7 | Mahfuza Khatun | Bangladesh | 35.63 | |
| 62 | 2 | 5 | Shne Joachim | Saint Vincent and the Grenadines | 35.76 | |
| 63 | 2 | 8 | Bonita Imsirovic | Botswana | 36.53 | |
| 64 | 2 | 0 | Teona Bostashvili | Georgia | 37.04 | |
| 65 | 3 | 0 | Oreoluwa Cherebin | Grenada | 37.11 | |
| 66 | 2 | 6 | Chade Nersicio | Netherlands Antilles | 37.43 | |
| 67 | 2 | 3 | Altansukh Nomin | Mongolia | 37.78 | |
| 68 | 2 | 9 | Mariam Foum | Tanzania | 38.21 | |
| 69 | 1 | 4 | Anum Bandey | Pakistan | 38.50 | |
| 70 | 2 | 2 | Hemthon Vitiny | Cambodia | 39.53 | |
| 71 | 1 | 3 | Angelika Ouedraogo | Burkina Faso | 39.58 | |
| 72 | 1 | 5 | Ramatoulaye Camara | Guinea | 48.31 | |
| 73 | 1 | 6 | Haoua Sangare | Mali | 49.68 | |
| 74 | 1 | 7 | Lareiba Seibon | Niger | 49.72 | |
| | 2 | 1 | Vanessa Kokoe | Ivory Coast | | DNS |
| | 6 | 1 | Satomi Suzuki | Japan | | DNS |

### Semifinals

The semifinals were held at 18:26.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Jessica Hardy | United States | 29.90 | Q |
| 2 | 5 | Breeja Larson | United States | 30.20 | Q |
| 3 | 7 | Rikke Møller Pedersen | Denmark | 30.57 | Q |
| 4 | 6 | Moniek Nijhuis | Netherlands | 30.61 | Q |
| 5 | 3 | Mariya Liver | Ukraine | 30.94 | |
| 6 | 2 | Alia Atkinson | Jamaica | 31.27 | |
| 7 | 8 | Hrafnhildur Lúthersdóttir | Iceland | 31.37 | NR |
| 8 | 1 | He Yuzhe | China | 31.67 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Rūta Meilutytė | Lithuania | 29.48 | Q, WR |
| 2 | 4 | Yuliya Yefimova | Russia | 29.88 | Q |
| 3 | 6 | Petra Chocová | Czech Republic | 30.31 | Q, NR |
| 4 | 3 | Jennie Johansson | Sweden | 30.66 | Q |
| 5 | 7 | Marina García | Spain | 31.24 | |
| 6 | 8 | Samantha Marshall | Australia | 31.26 | |
| 7 | 2 | Fiona Doyle | Ireland | 31.52 | |
| 8 | 1 | Rebecca Ejdervik | Sweden | 31.73 | |

### Final

The final was held at 18:08.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Yuliya Yefimova | Russia | 29.52 | NR |
| | 4 | Rūta Meilutytė | Lithuania | 29.59 | |
| | 3 | Jessica Hardy | United States | 29.80 | =AM |
| 4 | 6 | Breeja Larson | United States | 29.95 | |
| 5 | 8 | Jennie Johansson | Sweden | 30.23 | |
| 6 | 7 | Rikke Møller Pedersen | Denmark | 30.72 | |
| 7 | 1 | Moniek Nijhuis | Netherlands | 31.31 | |
| | 2 | Petra Chocová | Czech Republic | | DSQ |