Arthur Edward Pepper Jr. (1925–1982) was an influential American jazz musician celebrated for his expressive alto saxophone playing. A prominent figure in West Coast jazz, he first gained recognition with Stan Kenton's big band. Pepper also played tenor saxophone, clarinet, and bass clarinet, showing versatility throughout his career. Known for his passionate performances and evolving style, he was acclaimed by critics as one of the leading alto saxophonists of his era.