UFC 59: Reality Check was a mixed martial arts event held by the Ultimate Fighting Championship on April 15, 2006 at the Arrowhead Pond in Anaheim, California, and broadcast live on pay-per-view in the United States and Canada.

This was the first UFC event held in California after the state's legalization of mixed martial arts contests.

It was a sold-out show, and was one of the fastest sell outs in UFC history.

According to the California State Athletic Commission, there were 13,060 tickets sold, with a live gate of $2,191,450.

The disclosed fighter payroll for the event was $539,000.