 This entry proceeds in three sections. Section 1 introduces the philosophy of sport with particular emphasis on the history of systematic philosophical thinking about sport. Section 2 examines the nature and value of sport, and it considers the main normative theories of sport developed in the literature. Section 3 addresses a cluster of topics that are central to the philosophy of sport, including: sportsmanship; cheating; performance enhancement; violent and dangerous sport; sex, gender, and race; fans and spectators; disability sport; and the aesthetics of sport.