This roadmap serves as a guide for the actions needed to improve sustainable management of phosphorus in the United States. It outlines our current phosphorus management problems and their impact on stakeholders and organizes sets of actions into Impact Opportunities. This roadmap is the culmination of research and collaboration between researchers from the Science and Technologies for Phosphorus Sustainability (STEPS) Center and external stakeholders, including industry representatives, policymakers, and others. Stakeholders should come away from this document understanding both the urgent need to address the phosphorus challenge and what actions they can take to make a positive change toward a sustainable future.