| Event: | Men's freestyle 66 kg |
| Championship: | 2009 World Championships |
| Dates: | 21 September 2009 |
| Venue: | Messecenter Herning |
| Competitors: | 34 |
| Nations: | 34 |
| Gold: | Mehdi Taghavi |
| Gold Nation: | IRI |
| Silver: | Rasul Dzhukaev |
| Silver Nation: | RUS |
| Bronze: | Tatsuhiro Yonemitsu |
| Bronze Nation: | JPN |
| Bronze2: | Leonid Spiridonov |
| Bronze2 Nation: | KAZ |
| Prev: | 2007 |
| Next: | 2010 |
See main article: 2009 World Wrestling Championships.
The men's freestyle 66 kilograms is a competition featured at the 2009 World Wrestling Championships, and was held at the Messecenter Herning exhibition center in Herning, Denmark on September 21.