| Event: | Men's welterweight |
| Championship: | 2011 World Championships |
| Dates: | 2–3 May 2011 |
| Venue: | Gyeongju Indoor Stadium |
| Competitors: | 75 |
| Nations: | 75 |
| Gold: | Farzad Abdollahi |
| Gold Nation: | IRI |
| Silver: | Yunus Sarı |
| Silver Nation: | TUR |
| Bronze: | Issam Chernoubi |
| Bronze Nation: | MAR |
| Bronze2: | Ramin Azizov |
| Bronze2 Nation: | AZE |
| Bronze2 Variant: | 1991 |
| Prev: | 2009 |
| Next: | 2013 |
See main article: 2011 World Taekwondo Championships.
The men's welterweight is a competition featured at the 2011 World Taekwondo Championships, and was held at the Gyeongju Gymnasium in Gyeongju, South Korea on May 2 and May 3. Welterweights were limited to a maximum of 80 kilograms in body mass.