This chapter examines the principle of intergenerational justice in the context of the Anthropocene with special emphasis on water rights and climate change. It engages with critical questions on interpretation of intergenerational justice in the evolving international environmental law regimes, most importantly in the era of climate change. It engages with different theoretical approaches to justice in the context of environmental crises with a special focus on intergenerational justice and the theory of Anthropocene justice. This chapter argues for a considerable renovation of justice theories to extend the obligations of justice and global social change policy, theory, and movement to all peoples, communities, states, and non-state actors, and proceeds to devise approaches to answer some of the questions.