This report is concerned with the socioeconomic and governance dimension of Marine Managed Areas (MMAs), targeting key issues that still impede the design and implementation of MMAs. It looks into the objectives of the MMAs and which types of MMAs were effective at meeting their objectives. It evaluates how socio-economic (e.g., demographics) and governance (e.g. institutional frameworks and processes) characteristics impact on management effectiveness of MMAs (e.g. are wealthy communities correlated with more or less successful MMAs?). In general, this study assesses the social, economic and governance conditions of MMAs in North America (Central America)-Belize; South America (Northeastern)-Brazil; Oceania-Fiji; South America (Northwestern)-Ecuador; and North America (Central America)-Panama; in terms of their impact on factors such as economic development, quality of life, livelihoods, environmental awareness, stakeholder participation, and policy enforcement. The results will substantially contribute to the design and implementation of other socio-economic studies as well as to the employment of more effective MMA management practices in five countries and globally.