[1] The 2023 Futsal Week U-19 Summer Cup was an international men's under-19 futsal tournament, organized by Futsal Week, and held in Poreč, Croatia from 20 June to 25 June 2023.

[5] Originally, 12 teams had entered the competition, but three withdrew prior to the tournament.

The tournament was used as preparation for the 2025 UEFA Under-19 Futsal Championship for multiple teams, including Poland, Germany, and Spain.

[7][8][9] Nine teams competed in the first stage, and based on the finishing standings of those groups, a further three groups were played to determine finishing positions.

[10] All matches were broadcast on the official Futsal Week Facebook page.