| Event: | Heavyweight |
| Championship: | 2021 AIBA World Boxing Championships |
| Dates: | 26 October – 6 November |
| Venue: | Štark Arena |
| Location: | Belgrade, Serbia |
| Competitors: | 38 |
| Nations: | 38 |
| Gold: | Julio César La Cruz |
| Gold Nation: | CUB |
| Silver: | Aziz Abbes Mouhiidine |
| Silver Nation: | ITA |
| Bronze: | Madiyar Saydrakhimov |
| Bronze Nation: | UZB |
| Bronze2: | Enmanuel Reyes |
| Bronze2 Nation: | ESP |
| Prev: | 2019 |
| Next: | 2023 |
The heavyweight competition at the 2021 AIBA World Boxing Championships was held between 26 October and 6 November.[1]