This volume of the International Zoo Yearbook aims to address the plight of some of the most charismatic and iconic animals we know – the non-human great apes – and to showcase the work carried out by zoological institutions, sanctuaries and their conservation partners towards improving the management, well-being and protection of great ape species both in captivity and in the wild. The contributions in this volume highlight the latest achievements in great ape research, health and nutrition, animal management, in situ conservation and ex situ breeding programmes, and provide examples of how zoos can contribute to addressing the challenges and difficulties experienced when dealing with husbandry and population management linked to captive breeding, and in ensuring the protection of wild great apes and their habitats.