This article argues that Leibniz should be viewed as a predecessor of the idea of spatial justice and that Leibniz's heritage remains a valuable source for inspiration and critical reading of the contemporary literature on spatial justice. The article first demonstrates interdependency between Leibniz's conceptualisation of space and his conceptualisation of law and justice. This is the first time that this argument is made in relation to Leibniz, therefore significant space is devoted to justifying this argument. The article then proceeds to comparing Leibniz's views on space, law and justice to one of the most “spatial” contemporary articulation of the idea of spatial justice, namely that proposed by Andreas Philippopoulos-Mihalopoulos. The article concludes by pointing out some aspects of Leibniz's thought that are most valuable for the further study of law, space and spatial justice in contemporary scholarship.