The Welterweight competition was the fifth-heaviest class featured at the 2011 World Amateur Boxing Championships, held at the Heydar Aliyev Sports and Exhibition Complex. Boxers were limited to a maximum of in body mass.
| Gold | |
| Silver | |
| Bronze | |
Imre Bacskai (third round)
Myke Ribeiro (first round)
Andrey Zamkovoy (quarterfinals)
Maitituersun Qiong (first round)
Alexis Vastine (third round)
Mahamed Nurudzinau (second round)
Emil Ahmedov (first round)
Serik Sapiyev (runner-up)