# Swimming at the 2010 Summer Youth Olympics – Girls' 100 metre breaststroke

The women's 100 metre breaststroke heats and semifinals at the 2010 Youth Olympic Games took place on August 17 with the final on August 18 at the Singapore Sports School.

## Medalists

| Gold | Tera van Beilen Canada | 1:08.59 |
| Silver | Emily Selig Australia | 1:09.06 |
| Bronze | Rachel Nicol Canada | 1:09.18 |

## Heats
### Heat 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Brigitte Rasmussen | Virgin Islands | 1:20.38 | |
| 2 | 3 | Mariana Henriques | Angola | 1:26.96 | |
| 3 | 5 | Maimouna Boubacar Badie | Niger | | DNS |

### Heat 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | Taryn Mackenzie | South Africa | 1:13.46 | Q |
| 2 | 5 | Aurelie Waltzing | Luxembourg | 1:14.11 | |
| 3 | 3 | Yin Jing Cheryl Lim | Singapore | 1:14.38 | |
| 4 | 4 | Mijal Asis | Argentina | 1:14.54 | |
| 5 | 7 | Katarina Đurđević | Montenegro | 1:18.21 | |
| 6 | 6 | Kum Jong Ho | North Korea | | DNS |

### Heat 3

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 7 | Emily Selig | Australia | 1:10.57 | Q |
| 2 | 3 | Noora Laukkanen | Finland | 1:11.73 | Q |
| 3 | 5 | Tina Meža | Slovenia | 1:13.28 | Q |
| 4 | 4 | Yvette Man-Yi Kong | Hong Kong | 1:13.31 | Q |
| 5 | 2 | Yuliya Litvina | Kazakhstan | 1:13.55 | |
| 6 | 8 | Jolien Vermeylen | Belgium | 1:13.85 | |
| 7 | 6 | Ana de Pinho Rodrigues | Portugal | 1:15.31 | |
| 8 | 1 | Carolina Bergamaschi | Brazil | 1:16.42 | |

### Heat 4

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Tera van Beilen | Canada | 1:11.24 | Q |
| 2 | 6 | Maya Hamano | Japan | 1:11.32 | Q |
| 3 | 3 | Tjaša Vozelj | Slovenia | 1:12.27 | Q |
| 4 | 1 | Teresa Gutierrez | Spain | 1:12.75 | Q |
| 5 | 2 | Lina Rathsack | Germany | 1:13.08 | Q |
| 6 | 4 | Martina Carraro | Italy | 1:13.09 | Q |
| 7 | 7 | Evghenia Tanasienco | Moldova | 1:14.47 | |
| 8 | 8 | Aurelia Trnovcova | Slovakia | 1:15.99 | |

### Heat 5

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | Rachel Nicol | Canada | 1:08.87 | Q |
| 2 | 5 | Maria Georgia Michalaka | Greece | 1:10.77 | Q |
| 3 | 7 | Urtė Kazakevičiūtė | Lithuania | 1:11.67 | Q |
| 4 | 3 | Olga Detenyuk | Russia | 1:12.68 | Q |
| 5 | 1 | Chloe Francis | New Zealand | 1:13.38 | Q |
| 6 | 2 | Wang Chang | China | 1:13.50 | |
| 7 | 8 | Maria Carolina da Costa Rosa | Portugal | 1:16.40 | |

## Semifinals
### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Emily Selig | Australia | 1:09.84 | Q |
| 2 | 5 | Tera van Beilen | Canada | 1:09.93 | Q |
| 3 | 3 | Urtė Kazakevičiūtė | Lithuania | 1:11.63 | Q |
| 4 | 7 | Martina Carraro | Italy | 1:11.76 | Q |
| 5 | 6 | Tjasa Vozel | Slovenia | 1:12.28 | |
| 6 | 1 | Yvette Man-Yi Kong | Hong Kong | 1:12.67 | |
| 7 | 2 | Teresa Gutierrez | Spain | 1:13.15 | |
| 8 | 8 | Taryn Mackenzie | South Africa | 1:13.46 | |

### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Rachel Nicol | Canada | 1:09.22 | Q |
| 2 | 5 | Maria Georgia Michalaka | Greece | 1:10.55 | Q |
| 3 | 3 | Maya Hamano | Japan | 1:10.91 | Q |
| 4 | 6 | Noora Laukkanen | Finland | 1:11.75 | Q |
| 5 | 7 | Lina Rathsack | Germany | 1:12.03 | |
| 6 | 1 | Tina Meža | Slovenia | 1:12.33 | |
| 7 | 2 | Olga Detenyuk | Russia | 1:12.68 | |
| 8 | 8 | Chloe Francis | New Zealand | 1:13.03 | |

## Final

| Rank | Lane | Name | Nationality | Time |
| | 3 | Tera van Beilen | Canada | 1:08.59 |
| | 5 | Emily Selig | Australia | 1:09.06 |
| | 4 | Rachel Nicol | Canada | 1:09.18 |
| 4 | 2 | Maya Hamano | Japan | 1:10.18 |
| 5 | 6 | Maria Georgia Michalaka | Greece | 1:10.41 |
| 6 | 8 | Martina Carraro | Italy | 1:10.95 |
| 7 | 1 | Noora Laukkanen | Finland | 1:11.39 |
| 8 | 7 | Urtė Kazakevičiūtė | Lithuania | 1:11.63 |