The 2017–18 Junior ABA League is the inaugural season of the Junior ABA League with ten men's under-19 teams from Serbia, Croatia, Slovenia, Montenegro, Bosnia and Herzegovina and the Republic of Macedonia participating in it.

Ten under-19 teams are participating at the 2017–18 Junior ABA League season – Budućnost VOLI, Cedevita, Cibona, Crvena zvezda mts, Igokea, Mega Bemax, Mornar, MZT Skopje Aerodrom, Partizan NIS and Petrol Olimpija - will be divided into two semi-final Groups.

[3] In Group A in Belgrade, Serbia are Crvena zvezda mts, Cibona, Mega Bemax, Mornar and MZT Skopje Aerodrom.

In Group B in Zagreb, Croatia are Budućnost VOLI, Cedevita, Igokea, Partizan NIS and Petrol Olimpija.

Venue: Basket City Hall,[4] Belgrade, Serbia