With governments responsible for significant portions of national spending, the promise of including sustainability considerations into that spending can enable policy makers to lead by example with sustainable public procurement (SPP). The report examines the state of sustainable public procurement policies and practices being undertaken by national governments worldwide in the last five years. The research included a comprehensive literature and desktop review, 19 interviews, six country case studies and a survey of 273 SPP experts worldwide. The objective was to create a baseline analysis that examines the evolving field of SPP and the drivers, barriers, needs and opportunities in SPP.