The Olympic sport that involves a balance beam is gymnastics. This apparatus tests an athlete's balance, coordination, and grace as they perform a series of acrobatic skills and routines on a narrow beam elevated above the ground. Gymnasts execute difficult moves while maintaining poise and precision, and judges score their performances based on execution and artistic composition. Competing on the balance beam requires not only physical strength but also mental focus, making it one of the most challenging events to master in gymnastics.