| Event: | Men's flyweight |
| Championship: | 2019 World Championships |
| Dates: | 15–16 May 2019 |
| Venue: | Manchester Arena |
| Competitors: | 59 |
| Nations: | 58 |
| Gold: | Jang Jun |
| Gold Nation: | KOR |
| Silver: | Brandon Plaza |
| Silver Nation: | MEX |
| Bronze: | Rui Bragança |
| Bronze Nation: | POR |
| Bronze2: | Lucas Guzmán |
| Bronze2 Nation: | ARG |
| Prev: | 2017 |
| Next: | 2022 |
See main article: 2019 World Taekwondo Championships.
The men's flyweight is a competition featured at the 2019 World Taekwondo Championships, and was held at the Manchester Arena in Manchester, United Kingdom on 15 and 16 May. Flyweights were limited to a maximum of 58 kilograms in body mass.