As OT's we have a significant part to play in the lives of dementia patients. Fifty million people worldwide currently live with dementia, a condition that causes significant psychological burden as well as social and financial distress to those living with it, their carers and families. A comprehensive, multisectoral public policy response aimed at addressing the needs of people with dementia, their carers and families is needed to improve quality of life, enhance equitable access to services and reduce stigma and social isolation. This guide assists WHO Member States in formulating this response, through a multiphased, stepwise approach. The guide is divided into five sections. Section 1 provides an overview of global trends in dementia, including projected prevalence and costs, as well as the international community’s response to date. Section 2 defines the term “dementia plan”, including what is meant by stand-alone versus integrated dementia plans, and highlights the rationale for developing a policy response to dementia. Section 3 summarizes the guide’s purpose, approach and primary target audience. Section 4 outlines the importance of political leadership, governance and multisectoral collaboration as well as stakeholder engagement. These elements are considered cross-cutting across all phases and steps involved in developing and implementing a dementia plan.