People with intellectual and developmental disabilities sometimes engage in challenging behaviours. When behaviours escalate to the point where they pose imminent risk to the safety of people and environments, a crisis occurs that jeopardises community living and participation. In these situations, timely access to crisis stabilisation services is required. We conducted a systematic review of the literature to synthesise evidence on effective crisis stabilisation service models for challenging behaviours. A total of 46 publications met the inclusion criteria. The literature describes a spectrum of crisis stabilisation services of varying intensities including: outreach, outpatient, inpatient, respite, and capacity building through education and training. However, there is limited guidance on how to best structure service models. This review highlights the need for comprehensive and person-centred programme evaluations.