Power of Three

Power of Three  may be:
 Power of three, a number of the form 3
 Third power, a number of the form n

It is also the title of:
 Power of Three (novel), a novel by Diana Wynne Jones
 Power of Three (Fatso Jetson album)
 Power of Three (Michel Petrucciani album)
 Power of Three (Charmed) a magical power on the television series Charmed
 "The Power of Three" (Doctor Who) an episode of the television series Dr. Who
 "The Power of Three," an episode of Teenage Mutant Ninja Turtles
 "The Power of Three," a 2013 episode of Ancient Aliens
 Warriors: Power of Three, a fantasy book series by Erin Hunter
 The Power of Three, a music album by Monte Pittman