UFC 66: Liddell vs. Ortiz was a mixed martial arts event held by the Ultimate Fighting Championship on December 30, 2006. UFC 66's main event was a championship fight with two of the UFC's biggest light heavyweight stars, Light Heavyweight Champion Chuck Liddell defending his title against former champion Tito Ortiz.
| Actor | Role |
|---|---|
 Chuck LiddellSelf | Self |
 Tito OrtizSelf | Self |
 Keith JardineSelf | Self |
 Forrest GriffinSelf | Self |
 Jason MacDonaldSelf | Self |
 Chris LebenSelf | Self |
 Andrei ArlovskiSelf | Self |
| MMarcio CruzSelf | Self |
 Michael BispingSelf | Self |
 Eric SchaferSelf | Self |
 Thiago AlvesSelf | Self |
 Tony DeSouzaSelf | Self |
 Gabriel GonzagaSelf | Self |
| CCarmelo MarreroSelf | Self |
 Yushin OkamiSelf | Self |
 Rory SingerSelf | Self |
 Christian WellischSelf | Self |
 Anthony PeroshSelf | Self |