The December 30, 2005 Edition of Smackdown is a Professional wrestling television show of the WWE's Smackdown brand, which took take place on December 27, 2005 at the Mohegan Sun Arena in Uncasville, Connecticut.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Matt Hardy defeated John Bradshaw Layfield (w/ Jillian Hall) by Count Out (5:30)
- The Mexicools (Psicosis & Super Crazy) defeated The Dicks (Chad Dick & James Dick) (3:55)
- Chris Benoit  defeated Randy Orton [replacement for Booker T]  by DQ in a Best Of Seven Series Match # 5 for the WWE United States Championship (19:30)
- Bobby Lashley defeated Sylvan by Count Out (1:33)
- MNM (Mercury & Nitro) (w/ Melina) defeated Batista & Rey Mysterio (c) to win the WWE Tag Team Championship (15:27)