| Event: | Men's Greco-Roman 66 kg |
| Championship: | 2009 World Championships |
| Dates: | 27 September 2009 |
| Venue: | Messecenter Herning |
| Competitors: | 40 |
| Nations: | 40 |
| Gold: | Farid Mansurov |
| Gold Nation: | AZE |
| Silver: | Manuchar Tskhadaia |
| Silver Nation: | GEO |
| Bronze: | Ambako Vachadze |
| Bronze Nation: | RUS |
| Bronze2: | Pedro Mulens |
| Bronze2 Nation: | CUB |
| Prev: | 2007 |
| Next: | 2010 |
See main article: 2009 World Wrestling Championships.
The men's Greco-Roman 66 kilograms is a competition featured at the 2009 World Wrestling Championships; it was held at the Messecenter Herning exhibition center in Herning, Denmark on September 27.