The men's tournament of the 2017 FIBA 3x3 Under-18 World Cup was hosted in Chengdu, China in front of the New Century Global Center.

The FIBA Zone of the Americas was not represented by at least one country in the continent.

The top 20 teams, including the hosts, based on the FIBA National Federation ranking qualified for the tournament as of January 3, 2017.

[2] The knockout stage consisting of a semi-final and final phase took place on July 2.

[2] The time limit was eliminated for the final and the two players competed for three rounds instead of two.