Environmental sustainability is key to allow for human development without compromising natural resources. Environmental indicators provide crucial information about the state of the environment in quantitative terms and capture its physical, biological and chemical characteristics. Yet, the state of the environment is difficult to compare across countries because of highly diverse local conditions. Composite measures attempt to summarize the multifaceted state of the environment and to make it comparable across countries. They can include related societal aspects. In this chapter, we review the few existing indices for measuring environmental sustainability in Europe and beyond: Environmental Performance Index, Sustainable Society Index, Environmental Vulnerability Index, Ecosystem Well-being Index, and Environment and Gender Index. For every index, different sections offer basic information about its conceptual and empirical framework, its process of construction and metrics together with the most recent available data.