Swimming at the 2010 Summer Youth Olympics – Girls' 4 × 100 metre medley relay
# Swimming at the 2010 Summer Youth Olympics – Girls' 4 × 100 metre medley relay

The girls' 4 × 100 metre medley relay event at the 2010 Youth Olympic Games took place on 16 August 2010 at the Singapore Sports School.

## Medalists

| Australia | 4:09.68 |
| - | - |
| Russia | 4:11.07 |
| Germany | 4:11.76 |

## Heats

### Heat 1

| Rank | Lane | Nationality | Time | Notes |
| - | - | - | - | - |
| 1 | 4 | Australia | 4:13.12 | Q |
| 2 | 3 | Germany | 4:13.38 | Q |
| 3 | 6 | Japan | 4:19.00 | Q |
| 4 | 2 | South Africa | 4:24.41 | Q |
| 5 | 5 | Brazil | 4:25.66 | Q |

### Heat 2

| Rank | Lane | Nationality | Time | Notes |
| - | - | - | - | - |
| 1 | 2 | Russia | 4:13.43 | Q |
| 2 | 3 | China | 4:13.63 | Q |
| 3 | 4 | Canada | 4:17.94 | Q |
| 4 | 7 | United States | 4:26.15 | |
| 5 | 5 | Singapore | 4:28.56 | |
| | 6 | Italy | | DNS |

## Final

| Rank | Lane | Nationality | Time | Notes |
| - | - | - | - | - |
| | 4 | Australia | 4:09.68 | |
| | 3 | Russia | 4:11.07 | |
| | 5 | Germany | 4:11.76 | |
| 4 | 2 | Canada | 4:16.72 | |
| 5 | 7 | Japan | 4:16.80 | |
| 6 | 1 | South Africa | 4:23.52 | |
| 7 | 8 | Brazil | 4:24.62 | |
| | 6 | China | | DSQ |
