Realism emerged in mid-19th century theatre, aiming to depict life truthfully on stage. It focused on everyday people and situations, rejecting earlier theatrical styles' artificiality. Realism explored social issues and moral dilemmas, drawing inspiration from scientific and philosophical ideas of the time. Key figures like Henrik Ibsen, Anton Chekhov, and Constantin Stanislavski shaped realism's development. They created complex characters, natural dialogue, and detailed sets to create an illusion of reality. Realism's impact on acting, staging, and playwriting continues to influence modern theatre, film, and television.