The 2021–22 Junior ABA League is the fifth season of the Junior ABA League with twelve men's under-19 teams from Bosnia and Herzegovina, Croatia, Montenegro, Serbia, and Slovenia.

Mega Mozzart U19 won its third Junior ABA League title defeating SC Derby U19 in the final.

Forward Andrija Grbović was named the Junior ABA League MVP award.

Venue: Laktaši, Bosnia and Herzegovina

Venue: Ljubljana, Slovenia Source: Junior Adriatic League