This report presents the results and findings of a detailed source analysis on beach litter that was collected from three locations in West Greenland in September and October 2019: Sisimiut, Qaqortoq and Maniitsoq. The results show that most of the litter is of local origin and can be traced back to outdoor activities such as commercial and recreational fishing and hunting and municipal waste from local communities and settlements. The analysis took place during an interactive Litter-ID session with local stakeholders and experts. Such sessions are intended to create a common understanding of the sources and pathways of beach litter as well as insights into the interaction of such litter with the local environment. This detailed knowledge can then be used as input for further action to prevent future marine littering.