Nagaon boasts a diverse, multi-faith community that reflects the broader demographic tapestry of Assam.
* **Hinduism**: The majority religion, deeply influenced by the Ekasarana Dharma (Neo-Vaishnavism) propagated by Sankardeva. *Namghars* (community prayer halls) are central to community life. There are also numerous temples dedicated to Shiva, Durga, and Krishna. * **Islam**: Nagaon has a substantial Muslim population, particularly in the surrounding district and commercial areas like Haibargaon, supported by historic and modern mosques and madrassas. * **Other Faiths**: The city is also home to vibrant Christian, Sikh, and Jain communities, with local churches, gurdwaras, and Jain temples serving their respective congregations.