| Event: | Men's Greco-Roman 66 kg |
| Championship: | 2011 World Championships |
| Dates: | 12 September 2011 |
| Venue: | Sinan Erdem Dome |
| Competitors: | 52 |
| Nations: | 52 |
| Gold: | Saeid Abdevali |
| Gold Nation: | IRI |
| Silver: | Manuchar Tskhadaia |
| Silver Nation: | GEO |
| Bronze: | Kim Hyeon-woo |
| Bronze Nation: | KOR |
| Bronze2: | Pedro Mulens |
| Bronze2 Nation: | CUB |
| Prev: | 2010 |
| Next: | 2013 |
See main article: 2011 World Wrestling Championships.
The men's Greco-Roman 66 kilograms is a competition featured at the 2011 World Wrestling Championships, and was held at the Sinan Erdem Dome in Istanbul, Turkey on 12 September 2011.