The assertion that the Irish parliament, Oireachtas Éireann, or more specifically its lower house Dáil Éireann, is poor at if not incapable of fulfilling its constitutional role of holding the government to account is an established feature of the study of Irish politics. In this chapter, the development of parliamentary accountability is examined in constitutional and comparative contexts. This is achieved by first looking at the idea of accountability and its manifestation within the Westminster family of parliamentary systems, including the Oireachtas. The chapter examines the three principal methods through which executive accountability to Dáil Éireann has been pursued, namely debates, questions, and, more recently, committees. An analysis of the parliamentary reforms that have been proposed and introduced to address perceived accountability deficits is then presented. In a final section, important changes that resulted from the outcome of the 2016 general election for the operation of parliamentary accountability are examined.