WEC 31: Faber vs. Curran was a mixed martial arts (MMA) event held by World Extreme Cagefighting (WEC). The event took place on Wednesday, December 12, 2007, at the Hard Rock Hotel and Casino in Las Vegas, Nevada and was aired live on the Versus Network.

Urijah Faber is an American former mixed martial artist and actor. He competed at bantamweight and featherweight in the Ultimate Fighting Championship. He is also the founder of Team Alpha Male.