O’Casey had originally thought about writing a book about his life experiences as early as August 1926. In 1938 he completed the first volume, but the project continued to balloon, such that O’Casey eventually composed his autobiographies over the course of two decades, publishing six volumes between 1939 and 1954. This chapter puts the autobiographies in the perspective of working-class self-representation in Ireland during the twentieth century, interrogates the sense of self that can be found in the books, examines the response to the autobiographies in Ireland and beyond, and assesses the worth of O’Casey’s autobiographical writings.