Greece has undergone extensive reforms to cope with a deep recession over the past decade. It has made progress in decoupling air pollutant emissions from GDP and improving the conservation status of natural habitats. However, the country faces challenges in managing waste and water, and addressing air pollution. It is highly vulnerable to the impact of climate change. The energy mix has shifted towards cleaner fuels, but the economy strongly relies on fossil fuels. Progress towards sustainable development requires effective implementation of ambitious climate mitigation and adaptation policies, strengthening environmental governance and enhancing coherence between environmental and energy, transport, agriculture and tourism policies. This is the third Environmental Performance Review of Greece. It evaluates progress towards sustainable development and green growth, with special features on climate change mitigation and adaptation, and biodiversity conservation and sustainable use.