Adopting a political and legal perspective, Redefining Citizenship in Australia, Canada, and Aotearoa New Zealand undertakes a transnational study that examines the demise of Britishness as a defining feature of the conceptualisation of citizenship in Australia, Canada, and Aotearoa New Zealand and the impact that this historic shift has had on Indigenous and other ethnic groups in these states. During the 1950s and 1970s an ethnically based citizenship was transformed into a civic-based one (one based on rights and responsibilities). The major context in which this took place was the demise of British race patriotism in Australia, English-speaking Canada, and Aotearoa New Zealand. Although the timing of this shift varied, Aboriginal groups and non-British ethnic groups were now incorporated, or appeared to be incorporated, into ideas of citizenship in all three nations. The development of citizenship in this period has traditionally been associated with immigration in Australia, Canada, and Aotearoa New Zealand. However, the historical origins of citizenship practices in all three countries have yet to be fully analysed. This is what Redefining Citizenship in Australia, Canada, and Aotearoa New Zealand does. The overarching question addressed by the book is: Why and how did the end of the British World lead to the redefinition of citizenship in Australia, Canada, and Aotearoa New Zealand between the 1950s and 1970s in regard to other ethnic and Indigenous groups? This book will be useful for history and politics courses, as well as specialised courses on citizenship and Indigenous studies.