Abstract: Through an examination of the history of settler colonial violence against Indigenous peoples and lands in Canada, Palestine, and Australia, this paper exposes the links between colonialism and the penitentiary, across borders. This paper interrogates the differences and similarities between the use of prisons as a tool in settler colonial expansion in these three states. As a contribution to abolitionist thought and theory, this paper highlights the need for an intersectional analysis of the overlapping consequences of settler colonialism and international carceral regimes. Efforts to resist carceral expansion around the world must include efforts to resist colonial expansion, and the voices of Indigenous peoples must be centred throughout this process.