This Tabe’a III report addresses the status and trends in the implementation of the World Heritage Convention in the Arab region during the period from 2015 to 2019. This review was conducted in the context of emerging global trends and priorities associated with the World Heritage Convention, as well as other related global natural heritage platforms and programmes. Tabe’a III documents progress made in the conservation of natural and mixed World Heritage sites in the Arab region, as well as providing an update on the state of conservation of natural sites. Additionally, special themes address key priorities which have emerged from heritage protection, conservation challenges and opportunities arising in the region. Finally, there is a summary update on the Arab States’ lists of possible candidate sites, known as Tentative Lists, with notes on their development since Tabe’a II.