Bongaigaon is a religiously diverse and harmonious city.
* **Hinduism**: The majority religion, centered around prominent shrines like the Bageshwari Temple, which attracts thousands of devotees, especially during Durga Puja and Navratri. * **Islam**: Practiced by a significant portion of the population, with several mosques and Eidgahs located throughout the city and surrounding areas. * **Christianity, Sikhism & Jainism**: There are active churches, a Gurudwara (particularly notable in the railway and refinery townships), and Jain temples catering to minority communities, showcasing the town's cosmopolitan industrial nature.