The PPMM is a guide for Project Managers , their supervisors, and associated staff in project teams to create, implement, monitor, and report on projects, in a consistent manner across the organization, using best-practice approaches. It describes how UNEP’s Delivery Model and Programmatic Approach, and the principles of good Project Cycle Manage ment (PCM) and Results-Based Management (RBM) come together to deliver the aims of UNEP’s Medium-Term Strategy (MTS) 2022-2025 and Programmes of Work (PoW). It has been designed to be a practical tool, to be used by UNEP staff, at the global, regional, and national level, to enable high-quality delivery of programmes and projects and to ensure efficiency, effectiveness, and impact of UNEP’s interventions. This manual came into use in 2023 and supersedes any version of the PPMM created before this date. It will be reviewed on a bi-annual basis by the Policy and Programme Divi sion’s Programme Coherence and Assurance Unit (PCAU) to ensure it remains up to date and accurately reflects associated UNEP policies, systems and processes.