The 2021 AIBA World Boxing Championships were held in Belgrade, Serbia from 25 October to 6 November.

[1] Belgrade was picked to host the championships for the second time; the original 2021 contract with New Delhi was cancelled due to a disagreement between AIBA and the Boxing Federation of India over hosting fees.

(The contract further requires that all teams be allowed to compete under their own flags and explicitly includes Kosovo; AIBA recognizes the Kosovo Boxing Federation as a full member.

[5][6][7] In December 2021 after the tournament, the International Olympic Committee sent a letter to Serbia condemning the incident.

[8] 510 athletes from 86 countries and two AIBA Fair Chance Teams participated in the championships: