Swimming at the 2018 Summer Youth Olympics was held from 7 to 12 October at the Natatorium in Buenos Aires, Argentina.

The schedule was released by the Buenos Aires Youth Olympic Games Organizing Committee.

[1] In the table below, M stands for morning (begins 10:00), and E stands for evening (begins 18:00).

*   Host nation (Argentina)a Swimmers who participated in the heats only and received medals.