Abstract
High-quality data plays a crucial role in enhancing our comprehension of evolving social phenomena, and in designing effective policies to address existing and future challenges. This particularly applies to the gender dimension of data, given the profound impact of the pervasive so-called “gender data gap”. In recent decades, data recovered from archives, high quality surveys, and census and administrative data, combined with innovative approaches to data analysis and identification, has become pivotal for the progress of documenting structural gender differences. Nonetheless, before we can close the gender gaps on the labour market, within households, in politics, academia and other areas, researchers and policy-makers must first ensure a closure of the gender data gap.