This guide is a collection of practical information aimed at facilitating the establishment of allocated zones for aquaculture (AZAs) in the Mediterranean and the Black Sea. It provides detailed information on the process involved in the establishment of an AZA, including site selection and planning for aquaculture.The publication provides a brief overview of the international and regional context, and reviews the relevant institutional and legal frameworks at various levels. It sets out a step-by-step approach to establishing AZAs, including geographic information system tools, exclusion criteria and stakeholder participation, as well as conflict prevention and resolution.The guide is addressed to decision-makers from relevant bodies and administrations, governmental and non-governmental organizations, scientific research institutions, aquaculture producers and fishing communities, as well as other stakeholders involved in aquaculture activities, coastal development, or other uses of the aquatic environment and resources.