The Middleweight competition was the fourth-highest weight class featured at the 2009 World Amateur Boxing Championships, and was held at the Mediolanum Forum. Middleweights allowed in the competition were limited to a maximum of 75 kilograms in body mass.
| Gold | Abbos Atoev |
| Silver | Andranik Hakobyan |
| Bronze | Vijender Singh |
| Alfonso Blanco |
Vijender Singh (semifinals)
Alfonso Blanco (semifinals)
Victor Cotiujanschii (quarterfinals)
Abbos Atoev (champion)
Rey Recio (third round)
Zhang Jianting (quarterfinals)
Sergiy Derevyanchenko (quarterfinals)
Andranik Hakobyan (final)