The 2017 FIBA 3x3 Under-18 Europe Cup was the third edition of the Under-18 3x3 Europe Championships that was organized by FIBA Europe and was held between 1 and 3 September 2017, in Debrecen, Hungary. This 3x3 basketball event featured separate competitions for men's and women's national teams.
The qualification events took place in Szolnok, Hungary and Riga, Latvia on 5-6 August 2017. A total of 12 teams of each gender will be qualified for the championship through one of two qualifying tournaments.