Swimming at the 2018 Summer Youth Olympics – Girls' 100 metre freestyle

The girls' 100 metre freestyle event at the 2018 Summer Youth Olympics took place on 8 and 9 October at the Natatorium in Buenos Aires, Argentina.

Heats
The heats were started on 8 October at 10:12.

Semifinals
The semifinals were started on 8 October at 18:40.

Final
The final was held on 9 October at 19:25.