This research aims to see the form of civic engagement of the Sahabat Bekantan (SBI) Foundation, which has successfully preserved the population of probosci monkeys in recent years. The research approach used in this research is descriptive qualitative by writing down the form of civic engagement. The results of the study obtained that Civic engagement carried out by the Sahabat Bekantan Indonesia Foundation is by rehabilitating proboscis monkeys that are experiencing poor health, a place to conduct research related to probosci's monkeys and their ecosystems, restoring mangrove Zambia which aims to create a natural, healthy and good ecosystem for the development and preservation of proboscis monkeys, and designing and making a place on Curiak Island as the center of Sahabat Bekantan Indonesia's activities as an educational place for tourists, students and students to learn about probosci's monkeys and their ecosystems. The recommendation in this research is that what is done by Sahabat Bekantan Indonesia continues to be sustainable and needs maximum support from the Government to save native primates from the island of southern Kalimantan from extinction.