| Event: | Men's 66 kg |
| Championship: | 2013 World Judo Championships |
| Location: | Rio de Janeiro, Brazil |
| Gold: | Masashi Ebinuma |
| Gold Value: | 2 |
| Goldnoc: | JPN |
| Silver: | Azamat Mukanov |
| Silvernoc: | KAZ |
| Bronze: | Masaaki Fukuoka |
| Bronzenoc: | JPN |
| Bronze2: | Georgii Zantaraia |
| Bronzenoc2: | UKR |
The men's 66 kg competition of the 2013 World Judo Championships was held on August 27.
| width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze |