Evidence underpinning services and supports for people with younger onset dementia is an emerging field. Much of the information available to date has been descriptive or based on expert opinion, with limited empirical studies regarding the efficacy of particular approaches. However, this is changing in response to the increasing recognition of the different aetiologies, trajectories and implications of the diagnosis for people who are aged less than 65 years at onset. This Literature Review is the first part of a two ‐ stage project funded by the Australian Government to inform the development of services and supports for people with younger onset dementia and their families. Preliminary findings have been used to shape the national consultations that were conducted as part of the needs and feasibility analysis.