Steven Dietz (born June 23, 1958) is an acclaimed American playwright, director, and screenwriter. He is best known for his diverse body of work that spans comedy, tragedy, and suspense, often exploring themes of relationships, memory, and identity. His plays, including "Lonely West," "Fiction," and "The Secret Garden," have been widely performed in the United States and internationally. Dietz has taught at several universities and received multiple award nominations. His works are noted for their emotional depth and structural ingenuity, making a significant impact on contemporary American theater.