Background and objectives: Family caregivers of people with dementia experience high burden making medical decisions for their loved ones. Undertaking Advance Care Planning (ACP) can help reduce burden and stress. Having experiences making medical decisions for someone else may influence the way people make decisions for themselves. Therefore the aim of this study was to assess the willingness of family caregivers of people with dementia to undertake ACP for themselves, using the Theory of Planned Behavior.