| Event: | Men's kumite +84 kg |
| Championship: | 2021 World Karate Championships |
| Dates: | 16–20 November |
| Venue: | Hamdan Sports Complex |
| Location: | Dubai, United Arab Emirates |
| Competitors: | 64 |
| Nations: | 64 |
| Gold: | Gogita Arkania |
| Gold Nation: | GEO |
| Silver: | Simone Marino |
| Silver Nation: | ITA |
| Bronze: | Anđelo Kvesić |
| Bronze Nation: | CRO |
| Bronze2: | Asiman Gurbanli |
| Bronze2 Nation: | AZE |
| Prev: | 2018 |
| Next: | 2023 |
The Men's +84 kg competition at the 2021 World Karate Championships was held from 16 to 20 November 2021.[1]