2019–20 ABA League Second Division

The 2019–20 ABA League Second Division was the 3rd season of the ABA Second Division with 12 teams from Bosnia and Herzegovina, Croatia, Montenegro, North Macedonia, Serbia, and Slovenia participating in it.

On 12 March 2020, the ABA League Assembly temporarily suspended its competitions due to the COVID-19 pandemic. On 27 May 2020, the ABA League Assembly canceled definitely its competitions due to the COVID-19 pandemic. The ABA League Assembly decided not to recognize any team as the champion for the season, and decided to award the two wild cards for the 2020–21 ABA First League season to Borac Čačak and Split.

Team allocation
The labels in the parentheses show how each team qualified for the place of its starting round:
 * 1st, 2nd, etc.: National League position after Playoffs
 * WC: Wild card

MVP of the Round
Source: ABA League