This chapter provides an overview of the state of scholarship on political populism in Ireland, examines relevant research that explores definitional issues, and identifies Irish populist political actors. Although little research exists on populism and the role of the media or its impact on voters, the chapter takes a quick look at the increasing coverage of populism in the media, which was especially pronounced following the economic crisis in 2008. In the Irish literature, Fianna Fáil, the once-dominant party, is the political actor that has most commonly been associated with populism, at least until the mid-2000s. Since then, much focus has been on Sinn Féin, widely perceived as the new populist party, which emerged with an anti-austerity agenda following the economic crisis.