| Event: | Lightweight |
| Championship: | 2021 AIBA World Boxing Championships |
| Dates: | 27 October – 5 November |
| Venue: | Štark Arena |
| Location: | Belgrade, Serbia |
| Competitors: | 51 |
| Nations: | 51 |
| Gold: | Sofiane Oumiha |
| Gold Nation: | FRA |
| Silver: | Abdumalik Khalokov |
| Silver Nation: | UZB |
| Bronze: | Danial Shahbakhsh |
| Bronze Nation: | IRI |
| Bronze2: | Alexy de la Cruz |
| Bronze2 Nation: | DOM |
| Prev: | 2017 |
| Next: | 2023 |
The Lightweight competition at the 2021 AIBA World Boxing Championships was held between 27 October and 5 November.[1]