This essay seeks to open a conversation about multispecies justice in environmental politics. It sets out some of the theoretical approaches, key areas of exploration, and obvious challenges that come with rethinking a core plank of liberal theory and politics. First, we discuss some of the diverse scholarly fields that have influenced the emergence of multispecies justice. We then discuss core concerns at the centre of this reconfiguration of justice-including broadening conceptions of the subject of justice and the means and processes of recognition (and misrecognition). The importance of deconstructing and decolonising the hegemony of liberal political discourse is crucial, and is part of a larger project for multispecies justice to rework a politics of knowledge and practice of political communication. Finally, we begin to explore what a commitment to multispecies justice might demand of politics and policy. KEYWORDS Multispecies justice; environmental justice; environmental political theory Introduction: laying out the terrain of multispecies justice We began this in the midst of a fossil-fueled climate disaster. Bushfires raged across Australia laying waste to ecosystems and billions of the nonhuman beings and relationships that make up this place. This reality is neither a natural disaster nor a tragedy, but injustice-albeit injustice that cannot be contained by standard notions of that concept. The impacts of these and other ecological disasters generated by industrialization and capitalism demand an approach to idea and practice of justice that can encompass and respond to the destruction of multispecies lifeways. Here, we lay out an introduction to multispecies justice (MSJ), suggest theoretical approaches that contribute to it, key areas of exploration, and the challenges of rethinking justice.