2023 FIBA U18 European Championship Division B
The 2023 FIBA U18 European Championship Division B was the 17th edition of the Division B of the European basketball championship for men's national under-18 teams. The tournament was played in Matosinhos, Portugal, from 21 to 30 July 2023.
Participating teams
*First round
The draw of the first round was held on 14 February 2023 in Freising, Germany.In the first round, the teams were drawn into four groups. The first two teams from each group advance to the quarterfinals; the third and fourth teams advance to the 9th–16th place playoffs; the other teams will play in the 17th–22nd place classification groups.
All times are local.
Final standings
| Promoted to the 2024 FIBA U18 EuroBasket Division A | |
| Relegated to the 2024 FIBA U18 EuroBasket Division C |