Unknown is a 2006 American mystery thriller film directed by Simon Brand and written by Matthew Waynee. It stars Jim Caviezel, Greg Kinnear, Joe Pantoliano, Barry Pepper, and Jeremy Sisto as a group of men kidnapped and locked in a factory with no memory of how they arrived there.

Simón Brand is a Colombian film director. Brand has directed more than 200 TV commercials for companies such as Coca-Cola, Coors Light, AT&T, Apple Inc., BMW. He has also directed music videos for artists such as Paulina Rubio, Thalía, Juanes, Shakira, Alejandro Fernández, Enrique Iglesias and Ricky Martin.