Islam adolah agamo mayoritas nan dianuik dek sakita 85,2% panduduak Indonesia, nan manjadikan Indonesia nagara jo panduduak muslim tabanyak di dunia.[27] Sisonyo baagamo Protestan (8,9%), Katolik (3%), Hindu (1,8%), Buddha (0,8%), jo lain-lain (0,3%).
Approximately 85% are Muslims consisting of Shias and Sunnis, 12% Christians (9% Protestant and 3% Catholic), 1.8% Hindu, 0.4% Buddhist and other.