Stuart Stone is a Canadian film, television, and voice-over actor as well as a producer of television, film and music. He is best known for his roles as Ronald Fisher in the 2001 cult film, Donnie Darko and Ralphie Tennelli on The Magic School Bus animated television series from 1994 to 1997. Stone has also toured as a comedian and rapper.

Other credits include:

• Babar the Elephant
• My Pet Monster
• Rolling with Saget
• Circle Circle Dot Dot
• Jack of All Trades