This exacting study makes the case that a diverse range of theatre, film and activism engaged in the portrayal or participation of asylum seekers and refugees since 2001 has been informed by and contributed to the consolidation of 'irregular' noncitizenship as a cornerstone idea in contemporary Australian political and social life. This idea has been reified as a direct consequence of the asylum seeker-related public discourse that has been prominent in twenty-first century Australia, to the extent that it has become impossible to imagine what Australia means without it. 'Performing Noncitizenship' is the first book-length study of its kind to focus on Australia's urgent and fraught asylum politics, and its implications extend beyond one country's problems. To date, there has been little attention paid to theatre and performance's implicatedness in how irregular noncitizenship has been taken up in Western neoliberal democracies as a core diagnosis for the ills of a precarious social and economic status quo. This study is unique among studies of asylum seeker and refugee representation in theatre, film and activism in its interest in the ways representations of asylum seekers are informed by and inform identity politics among citizens. The book's purpose is to identify and illuminate the increasing leverage of noncitizenship as a marker of twenty-first century human illegitimacy.