This document provides an action-oriented strategy by identifying a core set of priority solutions to be implemented by targeted stakeholders from the whole plastics value chain. It aims to reduce the leakage of plastics into the marine environment as well as its associated impacts and improve the circularity of the plastics value chain. The recommendations proposed in the Roadmap aim to reduce the adverse environmental, ecological, and socio-economic impacts from marine plastics, while transforming the linear “take-make-dispose” economy into a circular economy. Together, these actions support the 2030 Agenda for Sustainable Development, particularly SDG 12 on Responsible Consumption and Production and SDG Target 14.1, which aims to significantly reduce marine pollution, including marine debris, by 2025.