| Prevseason: | 2020–21 |
| Nextseason: | 2022–23 |
| Junior ABA League | |
| Season: | 2021–22 |
| Champions: |  Mega Mozzart U19 |
| Runners Up: |  SC Derby U19 |
| Third Place: |  Igokea U19 |
| Fourth Place: | Cedevita Olimpija U19 |
| Teams: | 12 |
| Dates: | 25–28 November 2021 (Group stage) 28–29 April 2022 (Final Four) |
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. Teams were youth system rosters of the 2021–22 ABA League First Division teams.
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.[1]
| Regular season | |||||||
|---|---|---|---|---|---|---|---|
| width=210 | Borac Čačak U19 | width=210 | Split U19 | width=210 | SC Derby U19 | width=210 | Krka U19 |
| width=210 | width=210 | Cibona U19 | width=210 | width=210 | Cedevita Olimpija U19 | ||
| width=210 | width=210 | Zadar U19 | width=210 | Igokea U19 | width=210 | Spars U19 | |
| Team | Home city | Head coach | Captain |
|---|---|---|---|
| Borac Čačak U19 | Čačak | Miloš Pejanović | |
| Cedevita Olimpija U19 | Ljubljana | Borut Fijavž | |
| Cibona U19 | Zagreb | Boris Džidić | |
| Igokea U19 | Aleksandrovac | Slobodan Kecman | |
| Krka U19 | Domen Zevnik | ||
| Nikola Jović | |||
| Mornar Barsko zlato U19 | Bar | Zoran Peruničić | |
| Partizan NIS U19 | Belgrade | Đorđe Jovičić | |
| SC Derby U19 | Podgorica | Borivoje Stanišić | |
| Split U19 | Split | ||
| Spars U19 | Sarajevo | ||
| Zadar U19 | Zadar | Marko Selin | |
Venue: Bar, Montenegro
Venue: Laktaši, Bosnia and Herzegovina
Venue: Ljubljana, SloveniaSource: Junior Adriatic League
| valign=top align=right width=33% |
|
| Player | Team | ||
|---|---|---|---|
| MVP | |||
| [2] | |||
| Ideal Starting Five | |||
| [3] | |||
| Igokea | |||
| SC Derby | |||