Beberapa agama berbeza diamalkan di Indonesia. Indonesia secara rasmi adalah republik presiden dan negara kesatuan tanpa agama negara yang mantap.[2][3] Prinsip pertama asas falsafah Indonesia, Pancasila, memerlukan rakyatnya menyatakan kepercayaan kepada "Tuhan Yang Maha Esa".[4][5] Walaupun, seperti yang dijelaskan oleh Mahkamah Perlembagaan, sila pertama Pancasila ini adalah pengiktirafan yang jelas tentang zat ketuhanan dan dimaksudkan sebagai prinsip tentang cara hidup bersama dalam masyarakat yang beragam agama, ini bukanlah pengesahan doktrin teologi tertentu tentang bagaimana agama atau kepercayaan harus diamalkan.[6] Walau bagaimanapun, pemerintah Indonesia mempunyai sikap diskriminasi terhadap pelbagai agama suku, ateis, dan warganegara agnostik.
^"Statistik Umat Menurut Agama di Indonesia" (dalam bahasa Indonesia). Kementerian Agama Republik Indonesia. 15 Mei 2018. Diarkibkan daripada yang asal pada 3 September 2020. Dicapai pada 15 November 2020. Muslim 231 Million (86.7), Christian 20.45 Million (7.6), Catholic 8.43 million (3.12), Hindu 4.65 million (1.74), Buddhist 2.03 million (0.77), Confucianism 76.630 (0.03), Others/Traditional faiths 126.51 (0.04), Total 266.5 Million
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