Junior ABA League
|Number of teams||12|
|Level on pyramid||1st|
|Current champions|| Cibona U19 (1st title) |
|Most championships|| Cibona U19|
Mega Bemax U19 (1 title)
The Junior ABA League, officially known as the U19 ABA League Championship, is a regional boy's youth age basketball tournament that is contested between the youth selections of basketball clubs from the ABA League. It is run by the ABA League JTD. It is a regional competition between men's teams from six countries: Bosnia and Herzegovina, Croatia, Montenegro, North Macedonia, Serbia and Slovenia.
The ABA League Assembly, held on July 24, 2017 in Belgrade, Serbia, decided to organize the Junior League with a desire to strengthen its position as the main power for development of basketball in the region. On October 26, 2017, participants, hosts and dates for the inaugural tournament was confirmed.
Mega Bemax became champions of the first-ever U19 ABA League Championship Final Four tournament, which took place in Laktaši in 2018, as they have beaten Crvena zvezda. In 2019, the second Final Four tournament took place in Slavonski Brod, where Cibona became champion beating Crvena zvezda in the final.
On 12 March 2020, the ABA League Assembly temporarily suspended the 2019–20 season due to the COVID-19 pandemic. On 27 May 2020, the ABA League Assembly canceled definitely the season due to the COVID-19 pandemic.
|Season||Host city||Champion||Runner-up||Score||MVP||Champion's Coach|
|2017–18||Laktaši||Mega Bemax U19||Crvena zvezda U19||82–60||Goga Bitadze||Vlada Vukoičić|
|2018–19||Slavonski Brod||Cibona U19||Crvena zvezda U19||73–68||Roko Prkačin||Ivan Juran|
|2019–20||Belgrade||Canceled due to the COVID-19 pandemic||Not awarded||None|
|2020–21||Not decided||Not held due to the COVID-19 pandemic||Not awarded||None|
- "The ABA League Second Division will start from the 2017/18 season". aba-liga.com. 13 June 2018. Retrieved 1 August 2017.
- "Beginning of ABA League season meets highest standards, Junior Tournaments system confirmed". aba-liga.com. Retrieved 13 June 2018.
- "ABA competitions suspended". aba-liga.com. Retrieved 2 April 2020.
- "Conclusions of the ABA League j.t.d. Assembly". aba-liga.com. Retrieved 28 May 2020.