Kart Racer is a 2003 Canadian-German sports drama film directed by Stuart Gillard, and starring Will Rothhaar, David Gallagher and Randy Quaid.

The film centers on a boy named Watts "Lightbulb" Davies (Will Rothhaar) who likes to race go-karts.

Watts Davies (Will Rothhaar) is a 14-year-old kid who decides to take up go-kart racing, he finds a new pursuit and begins to reconnect with his father, Vic (Randy Quaid), whom he has been clashing with since the death of his mother.

A little later, after more trouble, Watts sadly watches as Rodney and his dad buys the kart that he had originally set his eyes upon.

Throughout the film as Vic teaches Watts how to compete, the young driver begins to fall for Dahlia (Amanda De Martinis), an attractive and rebellious local girl and a graffiti artist.