The 2018–19 Junior ABA League is the second season of the Junior ABA League with twelve men's under-19 teams from Serbia, Croatia, Slovenia, Montenegro and Bosnia and Herzegovina.

[1] Twelve under-19 teams are participating at the 2018–19 Junior ABA League season and they are divided into two semi-final Groups.

The two best placed teams of each group will advance to the final tournament.

At the final tournament, the teams will play two games – the semifinal and the final or third place game.

Venue: Slavonski Brod, Croatia[2] Source: Junior Adriatic League