The 2019 FIVB Volleyball Boys' U19 World Championship was the sixteenth edition of the FIVB Volleyball Boys' U19 World Championship, contested by the men's national teams under the age of 19 of the members of the FIVB, the sport's global governing body.

Iran was the defending champions, having won their second title in Bahrain.

Teams were seeded in the first two positions of each pool following the serpentine system according to their FIVB U19 World Ranking as of 1 January 2019.

[3] FIVB reserved the right to seed the hosts as heads of pool A regardless of the U19 World Ranking.

All teams not seeded were drawn to take other available positions in the remaining lines, following the U19 World Ranking.