Stephen Salop is an American economist and law professor known for his work in antitrust law and competition policy. He is a professor at Georgetown University Law Center and has contributed significantly to the understanding of market dynamics and the effects of monopolistic practices. Salop is particularly recognized for his development of the "Salop model," which analyzes how firms with market power can influence prices and consumer choices. His research has influenced both academic thought and practical applications in antitrust enforcement and regulatory policies, making him a prominent figure in the field of economic law.