In 2021, a network of researchers working in the area of suicide and self-harm on the island of Ireland was established. This group or network is referred to as C-SSHRI (Connecting Suicide and Self-Harm Researchers on the Island of Ireland). The C-SSHRI network was established to address a key strategic goal of Connecting for Life, Ireland’s national strategy to reduce suicide 2015-2024: to improve surveillance, evaluation and high-quality research relating to suicidal behaviour. The primary aims of the network are to enhance collaboration between researchers across the island of Ireland, facilitate a wider dissemination of research findings, increase awareness of ongoing research, and, through combined experience and expertise, create a ‘community of influence’ with respect to suicide and self-harm policy and commissioned research. The scoping review outlined in this report has been carried out as part of the work of the C-SSHRI group.