John Rodney Mullen (born August 17, 1966) is an American professional skateboarder who practices freestyle skateboarding and street skateboarding. He is considered one of the most influential skaters in the history of the sport. Mullen is credited for inventing numerous tricks, including the flatground ollie, kickflip, heelflip, impossible, and 360-flip. As a result, he has been called the "Godfather of modern freestyle skating."

Rodney Mullen won his first world freestyle skateboard championship at the age of 14; over the following decade, he won 34 out of 35 freestyle contests, thus establishing the most successful competitive run in the history of the sport. Over the following years, he transitioned from freestyle to street skateboarding, adapting his accumulated freestyle skills to street and inventing or expanding upon additional tricks in the process, such as primo slides, dark slides, and Casper slides.

Mullen has appeared in over 20 skateboarding videos and has co-authored an autobiography, entitled The Mutt: How to Skateboard and Not Kill Yourself, with writer Sean Mortimer.