European Journal of Political Theory, Ahead of Print. How should responsibility be theorized in the context of the global climate crisis? This question is often framed through the language of distributive justice. Because of the inequitable distribution of historical emissions, climate vulnerability, and adaptation capacity, such considerations are necessary, but do not exhaust the question of responsibility. This article argues that climate change is a structural injustice demanding a theory of political responsibility. Agents bear responsibility not in virtue of their (...) individual causal contribution or capacity, but because they participate in and benefit from the carbon-intensive structures, practices, and institutions that constitute the global political and economic system. Agents take responsibility by engaging in collective political action to transform these structures that generate both climate hazards and unjust relationships of power. By incorporating distributive principles within a capacious conception of political responsibility, this framework advances the theory and practice of climate justice in two ways. First, adopting a relational rather than individualistic criterion of responsibility better makes sense of how and why individuals bear responsibility for a global and intergenerational injustice like climate change. Second, framing climate justice in terms of political responsibility for unjust structural processes better orients and motivates the political action necessary for structural transformation. (shrink)