The 2018–19 Euroleague Basketball Next Generation Tournament, also called Adidas Next Generation Tournament by sponsorship reasons, is the 17th edition of the international junior basketball tournament organized by the Euroleague Basketball Company.

As in past years, 32 teams joined the first stage, which are played in four qualifying tournaments between December 2018 and February 2019.

The Munich Tournament was played between 25 and 27 January 2019.

The Kaunas Tournament was played between 8 and 10 February 2019.

The Final Tournament was played between 16 and 19 May 2019 in Vitoria-Gasteiz, Spain.