The Pinewood Derby is the wood car racing event of the Cub Scout Program of the Scouting America. Pinewood derbies are often run by packs of the Cub Scouts program. With the help of adults, Cub Scouts build their own unpowered, unmanned miniature cars from wood, usually from kits containing a block of pine wood, plastic wheels, stickers with numbers, and metal axles. With the popularity of the pinewood derby, other organizations have developed similar events. Pinewood derby is a registered trademark of the Boy Scouts of America so most use different names. Each derby has slightly different rules for making and racing their cars. A small industry has developed to provide organizer equipment (e.g. tracks, timers, and scales) and awards (e.g. trophies and ribbons).
Similar Cub Scouting events include the raingutter regatta (a race for miniature boats) and the space derby (a race for rubber band-driven propeller shuttles).