Optimizing the transition between child and adolescent mental health services (CAMHS) and adult mental health services (AMHS) is a priority for healthcare systems. The purpose of this systematic review is to: (1) identify and compare models of care that may be used to facilitate the transition from CAMHS to AMHS; and (2) discuss trends and implications to inform future research and practice. Results identified three models of care which move beyond healthcare services and incorporate a broader range of services that better meet the dynamic needs of transition-aged youth. Joint working among providers, coupled with individualized approaches, is essential to facilitating continuity of care.