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

Slovenia qualified one player based on the Badminton Junior World Rankings.

[1] Slovenia qualified a boys' team based on the U18 3x3 National Federation Ranking.

[2] Slovenia qualified one boat based on its performance at the 2018 World Qualification Event.

[4] Slovenia qualified one boat based on its performance at the 2018 European Rowing Junior Championships.