The global land rush and mainstream climate change narratives have broadened the ranks of state and social actors concerned about land issues, while strengthening those opposed to social justice-oriented land policies. This emerging configuration of social forces makes the need for deep social reforms through redistribution, recognition, restitution, regeneration and resistance – book-ended by the twin principles of ‘maximum land size’ (‘size ceiling’) and a ‘guaranteed minimum land access’ (‘size floor’) – both more compelling and urgent, and, at the same time, more difficult than ever before. The five deep social reforms of socially just land policy are necessarily intertwined. But the global land rush amidst deepening climate change calls attention to the linkages, especially between the pursuit of agrarian justice on the one hand and climate justice on the other. Here, the relationship is not without contradictions, and warrants increased attention as both unit of analysis and object of political action. Understanding and deepening agrarian justice imperatives in climate politics, and understanding and deepening climate justice imperatives in agrarian politics, is needed more than ever in the ongoing pursuit of alternatives.