This paper explores the relationship between museums, cultural sustainability, and cultural policies. Specifically, it offers a theoretical model for the sustainable development of museums and a process for designing appropriate cultural policies for museums with cultural sustainability in mind. The case of Cyprus is used to demonstrate how strengths and gaps in cultural sustainability can be identified within a broader museum environment. The study examines the main stakeholders (the state, municipalities/ communities, and individuals), types of museums (archaeological, art, ethnographic, etc.) they establish and the forces influencing their decisions (such as politics, a sense of national identity, cultural tourism, economic revitalizatio...