Swimming at the 2014 Summer Youth Olympics – Girls' 4 × 100 metre medley relay

The girls' 4 × 100 metre medley relay event in swimming at the 2014 Summer Youth Olympics took place on 18 August at the Nanjing Olympic Sports Centre in Nanjing, China.

Heats
The heats were held at 11:03.

Final
The final was held at 19:29.