| Event: | Middleweight |
| Championship: | 2021 AIBA World Boxing Championships |
| Dates: | 26 October – 5 November |
| Venue: | Štark Arena |
| Location: | Belgrade, Serbia |
| Competitors: | 46 |
| Nations: | 46 |
| Gold: | Yoenlis Hernández |
| Gold Nation: | CUB |
| Silver: | Dzhambulat Bizhamov |
| Bronze: | Salvatore Cavallaro |
| Bronze Nation: | ITA |
| Bronze2: | Weerapon Jongjoho |
| Prev: | 2019 |
| Next: | 2023 |
The Middleweight competition at the 2021 AIBA World Boxing Championships was held between 26 October and 5 November.[1]