The Lightweight competition was the five-lowest weight featured at the 2009 World Amateur Boxing Championships, and was held at the Mediolanum Forum. Lightweights were limited to a maximum of 60 kilograms in body mass.
| Gold | Domenico Valentino |
| Silver | José Pedraza |
| Bronze | Koba Pkhakadze |
| Albert Selimov |
Idel Torriente (quarterfinals)
Hrachik Javakhyan (second round)
Serdar Hudayberdiev (quarterfinals)
Yakup Kılıç (first round)
Miklós Varga (second round)
Domenico Valentino (champion)
Albert Selimov (semifinals)