Quarter midget racing is a form of automobile racing. The cars are approximately one-quarter (1/4) the size of a full-size midget car. The adult-size midget being raced during the start of quarter midget racing used an oval track of one-fifth of a mile in length. The child's quarter midget track is one quarter that length, or 1/20 mile (264 feet).

An adult-size midget in the 1940s and 1980s could reach 120 miles per hour, while the single-cylinder 7-cubic-inch quarter midget engine could make available a speed of 30 miles per hour in a rookie class (called novices), or one-quarter the speed of the adult car. Most of the competitive classes run speeds near 45 miles per hour. Current upper-class quarter midgets can exceed 45 miles per hour, but remain safe due to the limited size of the track. Quarter midget racecars have four-wheel suspension, unlike go-karts.

The drivers are typically restricted to ages 5 to 16. Tracks are typically banked ovals one-twentieth of a mile long, and have surfaces of dirt, concrete, or asphalt.