But what exactly do these inequalities overlap? Are they only the result of the superposition of socio-economic inequalities already widely studied with specific environmental problems (exposure to industrial or natural risk, to nuisances difficult access to environmental amenities…)? Do they require a new look at environmental issues and therefore specific action modalities? This article seeks to shed light on this theme, which is gradually being incorporated into social reflections and public action. Environmental inequalities are now a terminology that is increasingly used by civil society and politicians.