| Event: | Welterweight |
| Championship: | 2021 AIBA World Boxing Championships |
| Dates: | 25 October – 5 November |
| Venue: | Štark Arena |
| Location: | Belgrade, Serbia |
| Competitors: | 49 |
| Nations: | 49 |
| Gold: | Sewon Okazawa |
| Gold Nation: | JPN |
| Silver: | Omari Jones |
| Silver Nation: | USA |
| Bronze: | Ablaikhan Zhussupov |
| Bronze Nation: | KAZ |
| Bronze2: | Lasha Guruli |
| Bronze2 Nation: | GEO |
| Prev: | 2019 |
| Next: | 2023 |
The Welterweight competition at the 2021 AIBA World Boxing Championships was held from 25 October to 5 November 2021.[1]