American Chopper was a reality television series on The Learning Channel (TLC) produced by Pilgrim Films & Television. The popular series is based around the founder of the company, Paul Teutul, Sr., and his son, Paul Teutul, Jr., also known as Paulie or simply Junior, as the two run a business creating custom motorcycles in their workshop, Orange County Choppers in Newburgh, New York.

The contrasting attitudes of the two men and their propensity for sulking often lead to fiery, but humorous, exchanges as they meet unusually short deadlines for building distinctive custom choppers.

Originally a show on the Discovery Channel that started on March 31, 2003, the series moved to Discovery's sister channel, TLC, on December 28, 2007, starting off with an 18-hour marathon. Its first season on TLC premiered on January 18, 2008. Season 6 began airing on April 9, 2009 on TLC. American Chopper's final episode aired on February 11, 2010.