Brief synthesisThe W-Arly-Pendjari Complex is a transnational property shared between the Republic of Niger, Burkina Faso and the Republic of Benin in West Africa. Criterion (ix): Stretching across three countries, W-Arly-Pendjari Complex is the largest and most important continuum of terrestrial, semi-aquatic and aquatic ecosystems in the West African savanna belt. The W-Arly-Pendjari Complex is particularly crucial to the conservation of the last healthy populations of mammals belonging to the Sahelian and Sudanian domains. Five of the protected areas making up the W-Arly-Pendjari Complex are protected as national parks (managed as IUCN Category II). There is also a need to sustain long-term adequate funding for the W-Arly-Pendjari Complex.