This monograph is one of the first to examine a collection of Irish plays from a transnational perspective in today's era of globalization. The works dealt with in this study dramatize how foreign cultures are integrated into contemporary Ireland. In addition, they focus on the experiences of immigrants and marginalized people living on the fringes of Irish society. The aim of this book is therefore two-fold: first, it highlights how specific theatrical productions reflect the global factors at work in modern Ireland; second, it seeks to document how Irish dramatists exert a profound impact on theatre practitioners from non-English speaking countries and enrich their stage aesthetics. Accordingly, the works discussed in this book have not been authored by Irish playwrights only. They are set in the Middle East, Russia, South Africa, Taiwan, the UK, and the USA. This monograph concentrates both on canonical and established playwrights, such as Dion Boucicault, Edward Harrigan, Eugene O'Neill, Sean O'Casey, Brendan Behan, Samuel Beckett, Frank McGuinness, Sebastian Barry, Tom Murphy, Marina Carr, and on lesser-known writers, including Jimmy Murphy, Dolores Walshe, Damian Smyth, Colin Teevan, among others.