Medals awarded to participants of mixed-NOC teams are represented in italics.

Ecuador qualified a boys' team based on their overall ranking from the South American Youth Tour.

Ecuador qualified a mixed BMX racing team based on its ranking in the Youth Olympic Games BMX Junior Nation Rankings.

[2] Ecuador qualified one gymnast based on its performance at the 2018 European Junior Championship.

[5] Ecuador qualified one athlete based on its performance at the 2017 World Youth Championships.