This paper aims to strengthen the evidence base to leave no one behind. It is structured in four sections. The first section introduces the framework of inequality within the context of the 2030 Agenda from a multidimensional perspective. The second section presents the methodology that is applied and the data sources that are used to examine inequality in five selected indicators that are related to the Sustainable Development Goals. The third section analyses the results and shows relevant cases of comparison across FEALAC member countries. With a view to leaving no one behind, the conclusion proposes relevant policy recommendations aimed at addressing the gaps identified across distinct dimensions of sustainable development.