This Handbook explores the significance of irony, both verbal and situational, in language, thought, human action, and artistic expression. They cover five main themes: the scope of irony in human experience; irony's impact (both personal and in social life); irony in linguistic communication; irony and affect, and irony in expressive contexts. Contributions come from a wide range of academic disciplines, including psychology, linguistics, philosophy, literature, computer science, film and media studies, and music, making this a truly cross-disciplinary collection of benefit to a wide range of students and researchers.