The Moment of Truth is an American game show based on the Colombian Nada más que la verdad format ("Nothing but the Truth"). Contestants answer a series of 21 increasingly personal and embarrassing questions to receive cash prizes. The show was hosted by Mark L. Walberg and ran on the Fox network from January 23, to August 28, 2008.

On February 1, 2008, Fox ordered an additional 13 episodes of the show, bringing its episode order to 23. It was supposed to be on Fox's fall lineup, but was pushed back to make room for Fox's new game show Hole in the Wall, as well as the season finale of So You Think You Can Dance.