This one-day Conference organised by the UN Dag Hammarskjöld Library and the Scholarly Publishing and Academic Resources Coalition (SPARC) aims to bring the global discussion on open science to the UN and highlight Open Science initiatives from around the world. In cooperation with the global OpenCon community, the conference also brings early career leaders advancing openness in research and education into conversation with established leaders and policy makers in this key area for the UN 2030 Agenda.