This encyclopedia provides a comprehensive overview of the traditions, cultures, kinship norms, and other significant cultural aspects of the tribes, or otherwise named ethnic groups, of Indonesia, by an Indonesian anthropologist. The entries are supported by illustrations drawn by the late author himself, and are also accompanied by maps indicating the geographic locations and distributions of each tribe throughout the vast archipelago. Originally written and published in Bahasa Indonesian, the text has been translated into English and revised to feature up-to-date information. In showcasing the extent of diversity and the distinctiveness of the numerous tribal cultures in Indonesia, the volume presents itself as an important academic reference in Indonesian anthropology and ethnography studies, now finally available to global readership. Intended as a short work of reference, it will be indispensable to students and scholars researching Indonesia from anthropological, sociocultural, and ethnographic perspectives.