About the Sumatran Orangutan Society (SOS)
Sumatran orangutans are critically endangered and without urgent action could be the first Great Ape species to become extinct. SOS is dedicated to turning this situation around. We do this by:
Restoring damaged orangutan habitat through tree planting programmes.
Campaigning on issues threatening the survival of orangutans in the wild.
Raising awareness about the importance of protecting orangutans and their rainforest home.
SOS works to find local, national and international solutions to the root causes of deforestation. Our ultimate aim is to protect, extend and secure the habitat of wild orangutans to stabilise and grow the population.
Help us protect orangutans, their forests and their future.
Download our latest annual accounts:
SOS is a member of the United Nations' Great Apes Survival Partnership (GRASP)
SOS was established in 1997 by the late Lucy Wisdom. In 2001, SOS co-founded the Orangutan Information Centre (OIC) in Sumatra, a grassroots non-profit organisation staffed by passionate and dedicated Indonesian conservationists, led by Panut Hadisiswoyo. The OIC is our main partner organisation in Sumatra, and together we strive to change the fate of the critically endangered Sumatran orangutan.