The 2019 FIBA 3x3 U18 World Cup – Men's tournament is the seventh edition of this championship.

United States won their first title with a win against Turkey in the final.

[1] Mongolia's capital, Ulaanbaatar, was given the hosting rights on 31 October 2018.

[2] This marks the first time that Mongolia is hosting a world championship in a team sport.

[4] The seeding and groups were as follows: China (1) Slovenia (8) Italy (9) Jordan (16) Turkey (17) Russia (2) Ukraine (7) Turkmenistan (10) Kazakhstan (15) Dominican Republic (18) Latvia (3) United States (6) Belarus (11) Mongolia (14) (H) Georgia (19) Romania (4) Estonia (5) Brazil (12) Kyrgyzstan (13) Argentina (20) All times are local.