Infrastructure investment is a policy priority for Namibia to address critical gaps and support economic growth. However, a constrained fiscal environment in recent years has contributed to a decrease in public investment and capital stock. The Public Investment Management Assessment (PIMA) finds the strength of Namibia’s institutions is broadly in line with comparators, however there is scope for improvement. In particular the rate of execution of the Development Budget is a persistent challenge and there are weaknesses in project preparation, appraisal, selection and budgeting. Namibia is at an early stage in incorporating climate-sensitivity into public investment management and has a clear opportunity to get this right. Priority recommendations relating to project preparation, appraisal and budgeting and mainstreaming climate change considerations into strategic planning, offer potential to enhance the efficiency and sustainability of public investment management.