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.

Results Legend F — Won by fall R — Retired

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4

Repechage

References Results Book, Pages 121–122